Document:

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                                                                   EXHIBIT 10.38

                                HESKA CORPORATION
                              EXECUTIVE BONUS PLAN
                                DECEMBER 3, 1999

     This bonus plan is intended to provide incentives and rewards for the
senior management of Heska Corporation. The formulas set forth below are to be
applied to the year 2000 and subsequent years, unless changed by the Board of
Directors or the Compensation Committee of the Board of Directors, in their
discretion, with respect to such years. It is expected that the actual dollar
target for each such subsequent year will be agreed upon by the entire Board of
Directors or the Compensation Committee prior to, or shortly after, the
beginning of such year.

     As this has been a year of significant transition for Heska, it was
impractical to put in place an executive bonus plan for 1999 prior to this time.
As the bonus plan can not be applied retroactively to the portion of 1999
already completed, it will be applied exclusively to the 4th Quarter of 1999.
All of the potential percentage awards for the Heska management with respect to
1999 will be 1/2 the amount that would be granted with respect to an entire
year. So, for example, as the bonus percentage to be awarded to the CEO for a
full year if all objectives are met is 60% of base salary, for the 4th Quarter
of 1999 that percentage would be 30%.

     The components on which total bonuses will be determined and the percentage
of total bonus that they represent are as follows:

<TABLE>
<S>                                    <C>
                  Net Income (Loss)    50%
                  Total Revenue        25%
                  Discretionary        25%
</TABLE>

     These components will be subject to various qualifications from time to
time. Included in these qualifications will be a requirement that the Net Income
target not be met by reducing Research and Development Expenses below a
specified number or a specified percentage of revenue. In addition, the Net
Revenue target will be subject to a minimum total gross margin percentage.
Finally, the Discretionary component will be subject to a limitation that the
total percentage awarded as a Discretionary award can not exceed 15% (as opposed
to 25%) if the Net Income and Net Revenue targets are not both met.

     The total bonus payout for meeting all of these targets at the 100% level
will be a cash payment equal to the percentage of the recipients' base salary
set forth below:

<TABLE>
<S>                                 <C>
                  CEO               60%
                  COO               50%
                  CFO               35%
                  EVP's             35%
                  VP's              30%
                  Directors         25%
</TABLE>
<PAGE>   2
     Any bonus amounts will be paid out only after the Compensation Committee
has reviewed the Management's calculations of such bonus amounts in conjunction
with the audited financial statements for the year in question.

     In addition to these percentage bonuses, for every $1M by which the Net
Income target is exceeded, the Net Income bonus percentages shall go up by 10%.
For example, if the Net Income target is exceeded by $1M, the Net Income bonus
percentage for the CEO would increase by 10%, from 30% (50% of 60%) to 33%.
Similarly, if the Net Income target is exceeded by $1M, the Net Income bonus
percentage for the COO would increase by 10%, from 25% (50% of 50%) to 27.5%.
Exceeding the Total Revenue target will not result in any increase in that bonus
percentage (25% of 60% in the case of the CEO) and the Discretionary bonus
percentage can never be increased beyond 25% of the original bonus allocation
(25% of 60% in the case of the CEO).

     For the 4th Quarter of 1999 the specific targets will be as follows:

                  Net Income:  The Company must achieve an operating loss of
                               less than $6M in the 4th Quarter, exclusive of
                               any restructuring charges, gains and/or losses on
                               sales of businesses and interest income
                               (expense). This must be achieved with Research
                               and Development expense in the 4th Quarter of not
                               less than $3.8M.

                  Net Revenue: The Company must achieve total product and
                               research revenue of at least $15M. This must be
                               achieved with a minimum gross margin on product
                               revenue of at least 33%.

     The specific targets for 2000 will be decided upon in December of 1999 or
early in 2000.<PAGE>   1
                                                                    EXHIBIT 10.1

                                COMMON STOCK AND

                   SERIES A PREFERRED STOCK PURCHASE AGREEMENT

                                      among

                           PEGASUS TECHNOLOGIES, INC.

                                    KFx INC.

                                       and

                            KENNECOTT ENERGY COMPANY

                               dated March 3, 2000

<PAGE>   2

                                TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                        Page

                                                TABLE OF CONTENTS

<S>      <C>      <C>                                                                                   <C>
1.       AGREEMENT DEFINITIONS...........................................................................2

2.       AGREEMENT TO SELL AND PURCHASE..................................................................8

         2.01     Authorization of Preferred Shares by the Company.......................................8
         2.02     Sale and Purchase of Common Stock......................................................9
         2.03     Sale and Purchase of Series A Preferred Stock..........................................9

3.       Closing, Delivery And Payment..................................................................10

         3.01     Closing...............................................................................10

4.       Representations and Warranties of the Company..................................................11

         4.01     Organization, Good Standing and Qualification.........................................11
         4.02     Articles of Incorporation and Bylaws; Records.........................................12
         4.03     Capitalization........................................................................12
         4.04     Authorization; Binding Obligations....................................................13
         4.05     Non-Contravention; Consents...........................................................13
         4.06     Financial Statements..................................................................15
         4.07     Compliance With Legal Requirements....................................................16
         4.08     Governmental Authorizations...........................................................16
         4.09     Proprietary Rights....................................................................16
         4.10     Proceedings; Orders...................................................................17
         4.11     Title to Assets.......................................................................18
         4.12     Material Contracts....................................................................19
         4.13     Employees; Employee Benefits..........................................................20
         4.14     Receivables; Major Customers..........................................................21
         4.15     Major Suppliers.......................................................................22
         4.16     Tax Matters...........................................................................22
         4.17     Securities Laws Compliance; Registration Rights.......................................23
         4.18     Finders and Brokers...................................................................23
         4.19     Environmental Compliance..............................................................24
         4.20     Insurance.............................................................................24
         4.21     Related Party Transactions............................................................24
         4.22     Absence of Changes....................................................................25
         4.23     Reorganization Transaction............................................................27
         4.24     Benefit Plans; ERISA..................................................................27
         4.25     Full Disclosure.......................................................................29
         4.26     Affiliated Assets.....................................................................30
         4.27     KFx Organization, Good Standing and Qualification.....................................30
</TABLE>

                                       i
<PAGE>   3

<TABLE>
<S>      <C>      <C>                                                                                   <C>
         4.28     KFx Authorization; Binding Obligations................................................30
         4.29     Ownership of Common Shares............................................................30
         4.30     KFx Non-Contravention; Consents.......................................................30
         4.31     KFx Debt..............................................................................31

5.       Representations And Warranties Of The Purchaser................................................31

         5.01     Organization and Good Standing........................................................31
         5.02     Requisite Power and Authority.........................................................31
         5.03     Non Contravention.....................................................................32
         5.04     Investment Representations............................................................32
         5.05     Consents..............................................................................33

6.       Covenants Of The Company And KFx...............................................................33

         6.01     Access and Investigation..............................................................33
         6.02     Operation of Business.................................................................34
         6.03     Filings and Consents..................................................................35
         6.04     Notification; Updates to Disclosure Schedule..........................................36
         6.05     Indebtedness by Related Parties.......................................................37
         6.06     No Negotiation........................................................................37
         6.07     Best Efforts..........................................................................38
         6.08     Confidentiality.......................................................................38
         6.09     Stock Option Plan.....................................................................38
         6.10     Approval of Certificate of Designation; Authorization of Preferred Shares.............39
         6.11     Affiliated Assets.....................................................................39
         6.12     Marketing Entity......................................................................39
         6.13     Unconverted KFx Debt..................................................................39

7.       Conditions Precedent To Purchaser' Obligations.................................................40

         7.01     Representations and Warranties........................................................40
         7.02     Execution of Agreements...............................................................40
         7.03     Certificate of Designation............................................................40
         7.04     Satisfactory Completion of Pre-Investment Review......................................40
         7.05     Business Plan.........................................................................41
         7.06     Consents, Permits, Waivers and Approvals..............................................41
         7.07     Reservation of Conversion Shares......................................................41
         7.08     All Proceedings to be Satisfactory....................................................41
         7.09     Corporate Documents...................................................................41
         7.10     Formation of Net Power Solutions, LLC.................................................42
         7.11     License Agreements....................................................................42
         7.12     Election of Directors.................................................................42
         7.13     Release of Lien.......................................................................42
         7.14     Conversion of Debt....................................................................42
         7.15     Compliance Certificate................................................................42
         7.16     Delivery of Legal Opinion.............................................................42
</TABLE>

                                       ii
<PAGE>   4

<TABLE>
<S>      <C>      <C>                                                                                   <C>
         7.18     Affiliated Assets.....................................................................42

8.       Conditions Precedent To The Obligations of The Company and KFx.......

         8.01     Representations and Warranties........................................................43
         8.02     Execution of Agreements...............................................................43
         8.03     Certificate of Designation............................................................43
         8.04     Business Plan.........................................................................43
         8.05     Consents, Permits, Waivers and Approvals..............................................43
         8.06     Formation of Net Power Solutions, LLC.................................................43
         8.07     Conversion of Debt....................................................................43
         8.08     Compliance Certificate................................................................43

9.       Indemnification, etc. .........................................................................44

         9.01     Survival of Representations and Covenants.............................................44
         9.02     Indemnification by the Company and KFx................................................44
         9.03     No Contribution.......................................................................45

10.      Miscellaneous..................................................................................46

         10.01    Governing Law.........................................................................46
         10.02    Survival..............................................................................46
         10.03    Successors and Assigns................................................................47
         10.04    Entire Agreement......................................................................47
         10.05    Specific Enforcement..................................................................47
         10.06    Severability..........................................................................47
         10.07    Amendment.............................................................................47
         10.08    Waiver................................................................................47
         10.09    Notices...............................................................................47
         10.10    Counterparts; Facsimile...............................................................49
         10.11    Future Financings.....................................................................49
         10.12    Press Releases and Announcements......................................................49
         10.13    Expenses..............................................................................49
         10.14    Interpretation........................................................................49
         10.15    No Third Party Beneficiaries..........................................................51

         Exhibit A..................Certificate of Designations

         Exhibit B..................Stockholders Agreement

         Exhibit C..................Marketing Services Agreement

         Exhibit D..................Financial Statements

         Exhibit E..................Put Agreement
</TABLE>

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<PAGE>   5

                            COMMON STOCK AND SERIES A
                       PREFERRED STOCK PURCHASE AGREEMENT

         This Common Stock and Series A Preferred Stock Purchase Agreement is
entered into as of March 3, 2000, by and among Pegasus Technologies, Inc., a
South Dakota corporation (the "COMPANY"), KFx Inc., a Delaware corporation
("KFX"), and Kennecott Energy Company, a Delaware corporation (the "PURCHASER").

         In consideration of the mutual promises hereinafter set forth, the
parties hereto agree as follows:

                                 R E C I T A L S

         A. Purchaser is engaged in the business of selling coal to electric
utilities throughout the United States and continually evaluates technology that
promotes the use of coal in an environmentally friendly manner;

         B. The Company is principally engaged in the installation of a neural
net software and related technology ("NEUSIGHT") in electric utility plants for
the purpose of improving the efficiency of coal-fired plants and reducing the
emission of NOx and other potentially harmful pollutants from such plants;

         C. Purchaser believes that the successful implementation of the
programs and processes being utilized by the Company and the Purchaser's
opportunity to interact with its existing and potential customers could have a
beneficial effect on the Purchaser's business and potential coal markets;

         D. KFx is the majority shareholder of the shares of the Company and
seeks sophisticated and knowledgeable investors in the Company in order to
increase the likelihood of success by the Company in this developmental phase of
NeuSIGHT and related products.

         E. Based on the foregoing, the Purchaser desires to invest in the
Company and the Company and KFx desire to have the Purchaser as an investor in
the Company on the terms set forth herein.

         NOW, THEREFORE, in consideration of the foregoing and other good and
valuable consideration, the receipt and sufficiency of which is hereby
acknowledged, the parties hereto agree as follows:

<PAGE>   6
                                    AGREEMENT

1.       DEFINITIONS

         Capitalized terms in this Agreement are used as defined in this Article
1 or elsewhere in this Agreement (such terms to be equally applicable to the
singular and plural forms thereof):

         "ACQUISITION TRANSACTION" means any transaction involving:

         (a)      the sale or other disposition of all or any material portion
                  of the Company's business or assets ;

         (b)      the issuance, sale or other disposition of (i) any capital
                  stock of the Company, (ii) any option, call, warrant or right
                  (whether or not immediately exercisable) to acquire any
                  capital stock of the Company, or (iii) any security,
                  instrument or obligation that is or may become convertible
                  into or exchangeable for any capital stock of the Company; or

         (c)      any merger, consolidation, business combination, share
                  exchange, reorganization or similar transaction involving the
                  Company.

         "ADDITIONAL PREFERRED SHARES" has the meaning set forth in Section
2.03(b).

         "AFFILIATE" means, with respect to any Person, a Person that, directly
or indirectly through one or more intermediaries, controls, or is controlled by,
or is under common control with such Person or an officer, director, holder of
10% or more of the outstanding equity securities of such Person, or the parent,
spouse or lineal descendant of any of the foregoing.

         "AFFILIATED ASSETS" has the meaning set forth in Section 4.26.

         "AGREEMENT" means this Common Stock and Series A Preferred Stock
Purchase Agreement, dated as of the date hereof, by and among the Company, KFx
and the Purchaser (including the Disclosure Schedule and all other Schedules and
Exhibits attached hereto), as it may be amended from time to time.

         "BEST EFFORTS" means the efforts that a prudent Person desiring to
achieve a particular result would use in order to ensure that such result is
achieved in a commercially reasonable manner and as expeditiously as is
commercially reasonable under the circumstances.

         "BREACH", when used in connection with any representation, warranty,
covenant, obligation or other provision set forth in this Agreement, means that
there is or has been any inaccuracy in or breach of, or any failure to comply
with or perform, such representation, warranty, covenant, obligation or other
provision.

         "CERTIFICATE OF DESIGNATION" has the meaning set forth in Section 2.01.

                                       2
<PAGE>   7

         "CLOSING" has the meaning set forth in Section 3.01.

         "CLOSING DATE" has the meaning set forth in Section 3.01.

         "CLOSING DATE PREFERRED SHARES" has the meaning set forth in Section
2.03(a).

         "CODE" means the Internal Revenue Code of 1986, as amended.

         "COMMON SHARES" has the meaning set forth in Section 2.01.

         "COMMON STOCK" means the shares of common stock of the Company, $.001
par value per share.

         "COMPANY" has the meaning set forth in the introductory paragraph.

         "COMPANY CONTRACT" means any Contract:

         (a)      to which the Company is a party;

         (b)      by which the Company or any of its assets is bound or under
                  which the Company has any obligation; or

         (c)      under which the Company has any right or interest.

         "COMPANY RETURNS" has the meaning set forth in Section 4.16.

         "CONSENT" means any approval, consent, ratification, permission, waiver
or authorization (including any Governmental Authorization).

         "CONTRACT" means, with respect to any Person, any written or oral
agreement, contract, lease, understanding, arrangement, instrument, note,
guaranty, indemnity, warranty, deed, assignment, power of attorney, certificate,
purchase order, work order, insurance policy, benefit plan, commitment,
covenant, assurance or undertaking of any nature to which such Person is a party
or by which its properties or assets are bound.

         "CONVERSION SHARES" has the meaning set forth in Section 4.01.

         "DAMAGES" shall include any loss, damage, injury, Liability, claim,
demand, settlement, judgment, award, fine, penalty, Tax, fee (including any
reasonable legal fee, expert fee, accounting fee or advisory fee), charge, cost
(including any reasonable cost of investigation) or expense of any nature.

         "DISCLOSURE SCHEDULE" means the schedule (dated as of the date of this
Agreement), and as defined in Article 4, delivered to the Purchaser on behalf of
the Company and KFx, a copy of which is attached to this Agreement and
incorporated in this Agreement by reference.

         "EMPLOYEE BENEFIT PLAN" has the meaning set forth in Section 3(3) of
ERISA.

                                       3
<PAGE>   8

         "ENCUMBRANCE" means any lien, pledge, hypothecation, charge, mortgage,
security interest, encumbrance, equity, trust, equitable interest, claim,
preference, right of possession, lease, tenancy, license, encroachment,
covenant, infringement, interference, Order, proxy, option, right of first
refusal, preemptive right, community property interest, legend, defect,
impediment, exception, reservation, limitation, impairment, imperfection of
title, condition or restriction of any nature (including any restriction on the
voting of any security, any restriction on the transfer of any security or other
asset, any restriction on the receipt of any income derived from any asset, any
restriction on the use of any asset and any restriction on the possession,
exercise or transfer of any other attribute of ownership of any asset).

         "ENTITY" means any corporation (including any non-profit corporation),
general partnership, limited partnership, limited liability partnership, limited
liability limited partnership, joint venture, estate, trust, cooperative,
foundation, society, political party, union, company (including any limited
liability company or joint stock company), firm or other enterprise,
association, organization or other entity.

         "ENVIRONMENTAL LAW" means any Legal Requirement relating to pollution
or protection of human health or the environment.

         "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended.

         "EXCLUDED CONTRACT" means any Company Contract that meets any of the
following requirements:

         (a)      the Company has entered into such Company Contract in the
                  Ordinary Course of Business and such Company Contract does not
                  contemplate or involve the payment of cash or other
                  consideration in an amount or having a value in excess of
                  $25,000; or

         (b)      has a term of less than 90 days or may be terminated by the
                  Company (without penalty) within 90 days after the delivery of
                  a termination notice by the Company.

         "EXISTING PLAN" means the Company's 1999 Stock Incentive Plan, as in
existence on the date hereof.

         "FINANCIAL STATEMENTS" has the meaning set forth in Section 4.06.

         "GAAP" means generally accepted accounting principles, consistently
applied.

         "GOVERNMENTAL AUTHORIZATION" means any:

         (a)      permit, license, certificate, franchise, concession, approval,
                  Consent, ratification, permission, clearance, confirmation,
                  endorsement, waiver, certification, designation, rating,
                  registration, qualification or authorization

                                       4
<PAGE>   9

                  that is or has been issued, granted, given or otherwise made
                  available by or under the authority of any Governmental Body
                  or pursuant to any Legal Requirement; or

         (b)      right under any Contract with any Governmental Body.

         "GOVERNMENTAL BODY" means any:

         (a)      nation, principality, state, commonwealth, province,
                  territory, county, municipality, district or other
                  jurisdiction of any nature;

         (b)      federal, state, local, municipal, foreign or other government;

         (c)      governmental or quasi-governmental authority of any nature
                  (including any governmental division, subdivision, department,
                  agency, bureau, branch, office, commission, council, board,
                  instrumentality, officer, official, representative,
                  organization, unit, body or Entity and any court or other
                  tribunal);

         (d)      multi-national governmental or quasi-governmental organization
                  or body; or

         (e)      other body exercising, or entitled to exercise, any executive,
                  legislative, judicial, administrative, regulatory, police,
                  military or taxing authority.

         "INDEMNITEE" has the meaning set forth in Section 9.02.

         "INITIAL WORK PROGRAM" shall have the meaning set forth in Section
7.05.

         "KFx" has the meaning set forth in the introductory paragraph.

         "KFx DEBT" has the meaning set forth in Section 4.31.

         "KNOWLEDGE" of a particular fact or other matter means that:

         (a)      the individual in question is actually aware of such fact or
                  other matter; or

         (b)      a reasonable business person engaged in the Company's line of
                  business would be expected to discover or otherwise become
                  aware of such fact or other matter in the course of conducting
                  a reasonable inquiry concerning the truth or existence of such
                  fact or other matter.

The Company's Knowledge shall mean the Knowledge of those individuals identified
in Part 1(a) of the Disclosure Schedule and KFx's Knowledge shall mean the
Knowledge of those individuals identified in Part 1(b) of the Disclosure
Schedule.

         "LEGAL REQUIREMENT" means any federal, state, local, municipal, foreign
or other law, statute, legislation, constitution, principle of common law,
resolution, ordinance,

                                       5
<PAGE>   10

code, edict, decree, proclamation, treaty, convention, rule, regulation, ruling,
directive, pronouncement, requirement, specification, determination, decision,
opinion or interpretation that is or has been issued, enacted, adopted, passed,
approved, promulgated, made, implemented or otherwise put into effect by or
under the authority of any Governmental Body.

         "LIABILITY" means any debt, obligation, duty or liability of any nature
(including any unknown, undisclosed, unmatured, unaccrued, unasserted,
contingent, indirect, conditional, implied, vicarious, derivative, joint,
several or secondary liability).

         "MARKETING ENTITY" has the meaning set forth in Section 7.10.

         "MARKETING SERVICES AGREEMENT" has the meaning set forth in Section
4.01.

         "MATERIAL CONTRACT" has the meaning set forth in Section 4.12.

         "MEMBER OF THE CONTROLLED GROUP" means each trade or business, whether
or not incorporated, that would be treated as a single employer with the Company
under Section 4001 of ERISA or Section 414(b), (c), (m) or (o) of the Code.

         "MULTIEMPLOYER PLAN" means a plan described in Section 3(37) of ERISA.

         "ORDER" means any:

         (a)      order, judgment, injunction, edict, decree, ruling,
                  pronouncement, determination, decision, opinion, verdict,
                  sentence, subpoena, writ or award that is or has been issued,
                  made, entered, rendered or otherwise put into effect by or
                  under the authority of any court, administrative agency or
                  other Governmental Body or any arbitrator or arbitration
                  panel; or

         (b)      Contract with any Governmental Body that is or has been
                  entered into in connection with any Proceeding.

         "ORDINARY COURSE OF BUSINESS" means an action taken by or on behalf of
the Company that:

         (a)      is consistent with the Company's past practices and is taken
                  in the ordinary course of the Company's normal day-to-day
                  operations;

         (b)      is taken in accordance with prudent business practices
                  consistent with industry practice; and

         (c)      is not required to be authorized by the Company's stockholders
                  or the Company's board of directors or any committee of the
                  Company's board of directors.

         "OUTSTANDING OPTIONS" has the meaning set forth in Section 4.03(b).

                                       6
<PAGE>   11

         "PERSON" means any individual, Entity or Governmental Body.

         "PLAN" has the meaning set forth in Section 4.24.

         "PRE-CLOSING PERIOD" means the period commencing as of the date of this
Agreement and ending on the Closing Date.

         "PREFERRED SHARES" means the Closing Date Preferred Shares and the
Additional Preferred Shares.

         "PREFERRED PER SHARE PRICE" has the meaning set forth in Section
2.03(a).

         "PROCEEDING" means any action, suit, litigation, arbitration,
proceeding (including any civil, criminal, administrative, investigative or
appellate proceeding and any informal proceeding), prosecution, contest,
hearing, inquiry, inquest, audit, examination or investigation that is or has
been commenced, brought, conducted or heard by or before, or that otherwise has
involved or may involve, any Governmental Body or any arbitrator or arbitration
panel.

         "PROPRIETARY ASSET" means any patent, patent application, trademark
(whether registered or unregistered and whether or not relating to a published
work), trademark application, trade name, fictitious business name, service mark
(whether registered or unregistered), service mark application, copyright
(whether registered or unregistered), copyright application, maskwork, maskwork
application, trade secret, know how, franchise, system, computer software,
invention, design, blueprint, proprietary product, technology, proprietary right
or other intellectual property right or intangible asset.

         "PTI AGREEMENT" has the meaning set forth in Section 4.23.

         "PURCHASER" has the meaning set forth in the introductory paragraph.

         "PUT AGREEMENT" has the meaning set forth in Section 4.27.

         "RADL GROUP" means, collectively, Brad J. Radl, Philip A. Weintz,
Willie B. Roland, Jr., Terry V. Radl and Richard W. Vesel.

         "RELATED PARTY" means, with respect to the Company:

         (a)      KFx, or any of its Affiliates;

         (b)      each individual who is currently an officer of the Company;

         (c)      each member of the family of each of the individuals referred
                  to in clause (b) above; and

         (d)      any Entity (other than the Company) in which any one of the
                  Persons referred to in clauses (a), (b) and (c) above holds
                  (or in which more than

                                       7
<PAGE>   12

                  one of such individuals collectively hold), beneficially or
                  otherwise, a material voting, proprietary or equity interest.

         "REPRESENTATIVES" means as to any particular party, the officers,
directors, employees, attorneys, accountants, advisors and representatives of
such party. KFx and all other Related Parties shall be deemed to be
Representatives of the Company.

         "RESTRUCTURING AGREEMENTS" has the meaning set forth in Section 4.23.

         "SECURITIES ACT" means the Securities Act of 1933 (or any similar
successor federal statute), as amended, and the rules and regulations
thereunder, all as the same shall be in effect from time to time.

         "SERVICE MARKS" has the meaning set forth in Section 6.14.

         "SPECIAL DAMAGES" has the meaning set forth in Section 9.02(d).

         "STOCKHOLDERS AGREEMENT" has the meaning set forth in Section 4.01.

         "SUPPLEMENTAL WORK PROGRAM" has the meaning set forth in Section 7.05.

         "TAX" means any tax (including any income tax, franchise tax, capital
gains tax, estimated tax, gross receipts tax, value added tax, surtax, excise
tax, ad valorem tax, transfer tax, stamp tax, sales tax, use tax, property tax,
business tax, occupation tax, inventory tax, occupancy tax, withholding tax or
payroll tax), levy, assessment, tariff, impost, imposition, toll, duty
(including any customs duty), deficiency or fee, and any related charge or
amount (including any fine, penalty or interest).

         "TAX RETURN" means any return (including any information return),
report, statement, declaration, estimate, schedule, notice, notification, form,
election, certificate or other document or information that is or has been filed
with or submitted to, or required to be filed with or submitted to, any
Governmental Body in connection with the determination, assessment, collection
or payment of any Tax or in connection with the administration, implementation
or enforcement of or compliance with any Legal Requirement relating to any Tax.

         "TRANSACTION AGREEMENTS" has the meaning set forth in Section 4.01.

         "USRPHC" has the meaning set forth in Section 4.16.

2.       AGREEMENT TO SELL AND PURCHASE

         2.01 Authorization of Preferred Shares by the Company. On or prior to
the Closing, (i) the Company shall have authorized the sale and issuance to the
Purchaser of shares of its Series A Preferred Stock having the rights,
preferences, privileges and restrictions set forth in the Statement Respecting
Rights under Series Stock, attached hereto as Exhibit A (the "CERTIFICATE OF
DESIGNATION"); and (ii) KFx shall have

                                       8
<PAGE>   13

authorized the sale and conveyance to the Purchaser of 748,559 shares of the
Company's Common Stock (the "COMMON SHARES").

         2.02 Sale and Purchase of Common Stock. Subject to the terms and
conditions hereof, at the Closing KFx hereby agrees to sell to the Purchaser and
the Purchaser agrees to purchase from KFx, the Common Shares for an aggregate
purchase price of $1,000,000.

         2.03 Sale and Purchase of Series A Preferred Stock to Kennecott.

                  (a) Subject to the terms and conditions hereof, at the
Closing the Company hereby agrees to issue and sell to the Purchaser and the
Purchaser agrees to purchase from the Company, 467,849 shares of Series A
Preferred Stock (the "CLOSING DATE PREFERRED SHARES") at a purchase price per
share equal to $1.06872 (the "PREFERRED PER SHARE PRICE"), representing an
aggregate purchase price for the Closing Date Preferred Shares of $500,000.

                  (b) After the Closing Date, in addition to the Closing Date
Preferred Shares and the Common Shares, the Purchaser shall have the right, at
any time prior to December 31, 2004, to acquire 3,274,943 shares of Series A
Preferred Stock (the "ADDITIONAL PREFERRED SHARES") from the Company at the
Preferred Per Share Price (or an aggregate purchase price for all of the
Additional Preferred Shares, if issued, of $3,500,000), and upon exercise of
such right the Company shall issue and sell such shares of Series A Preferred
Stock to the Purchaser. The Additional Preferred Shares shall be issued on the
following conditions, unless such conditions are waived by the Purchaser:

                           (i) the Additional Preferred Shares shall be issued
         in seven tranches of 467,849 shares each, representing an aggregate
         purchase price for each tranche of $500,000;

                           (ii) each tranche shall be purchased by the Purchaser
         within 10 business days of the later to occur of the following (A) the
         Company's delivery to the Purchaser of a report, in a form reasonably
         satisfactory to Purchaser, indicating that the Company has satisfied
         the target objectives specified in the Initial Work Program and any
         prior Supplemental Work Programs as may be applicable; and (B) the
         report shall also include the Supplemental Work Program for the next
         tranche, containing (x) written updates of the goals and objectives of
         the Initial Work Program and any prior Supplemental Work Programs and
         (y) a description of the targets and specific activities to be
         accomplished under the newly proposed Supplemental Work Program with
         the purchase price for such tranche of Additional Preferred Shares;
         notwithstanding the foregoing or anything in Section 7.05 hereof, no
         addition or change to the Initial Work Program or to any Supplemental
         Work Program shall constitute a Supplemental Work Program without the
         approval of the Purchaser; and

                                       9
<PAGE>   14

                           (iii) no more than 3 tranches of Additional Preferred
         Shares shall be issued and purchased during calendar year 2000, 2
         tranches in calendar year 2001 and 2 tranches in calendar year 2002.

                  (c) Notwithstanding the provisions of Section 2.03(b), the
Purchaser shall have the absolute right and complete discretion at any time to
determine whether to continue purchasing tranches of Additional Preferred
Shares, regardless of the success of the Company relative to the target
objectives specified in the Business Plan and without any liability or duty to
the Company or KFx.

         2.04 Sale and Purchase of Series A Preferred Stock to KFx. Subject to
the terms and conditions hereof, at the Closing the Company agrees to issue to
KFx, and KFx agrees to purchase from the Company, 3,396,377 shares of Series A
Preferred Stock at the Preferred Per Share Price in consideration of the
cancellation by KFx (and release of all liens and security interests held by KFx
in connection therewith) of $3,629,775 in debt owed by the Company to KFx.

3.       CLOSING, DELIVERY AND PAYMENT

         3.01 Closing. The closing of the sale and purchase of the shares under
this Agreement (the "CLOSING") shall take place at 10:00 a.m. on the date on
which all of the conditions specified in Article 7 have been satisfied or waived
by the Purchaser, at the offices of Davis, Graham & Stubbs LLP, 370 Seventeenth
Street, Suite 4700, Denver, Colorado, or at such other time or place as the
Company, KFx and the Purchaser may mutually agree (such date is hereinafter
referred to as the "CLOSING DATE"). Subject to the terms and conditions hereof,
the following transactions shall occur at the Closing:

                  (a) the Company shall deliver to the Purchaser certificates
representing the number of Closing Date Preferred Shares to be purchased at the
Closing by the Purchaser;

                  (b) the Company shall deliver to KFx certificates representing
3,396,377 shares of Series A Preferred Stock;

                  (c)the Purchaser shall effect payment for the Closing Date
Preferred Shares purchased from the Company at the Closing by certified check or
wire transfer of immediately available funds to an account designated by the
Company;

                  (d) KFx shall deliver to the Purchaser certificates
representing the number of Common Shares to be purchased at the Closing by the
Purchaser;

                  (e) the Purchaser shall effect payment for the Common Shares
purchased from KFx at the Closing by certified check or wire transfer of
immediately available funds to an account designated by KFx;

                  (f) each of the Transaction Agreements shall be executed and
delivered, if not already done;

                                       10
<PAGE>   15

                  (g) the Company shall file the Certificate of Designation with
the Secretary of State of the State of South Dakota, if not already done;

                  (h) the Company and KFx shall each deliver to the Purchaser
the compliance certificate contemplated by Section 7.14;

                  (i) the legal opinions specified in Section 7.15 shall be
delivered to the Purchaser; and

                  (j) if not already done, a meeting of the stockholders of the
Company shall be held (or the written consent of the Stockholders shall be
obtained pursuant to the Company's Articles of Incorporation) at which the
stockholders shall elect a new board of directors of the Company in accordance
with Section 5.01(a) of the Stockholders Agreement.

         Each of the transactions listed above (other than such transactions
that may take place prior to the Closing and that have been completed prior to
the Closing) shall be deemed to take place simultaneously and none of them shall
be deemed to have been completed until all of them have been completed.

4.       REPRESENTATIONS AND WARRANTIES OF THE COMPANY

         Except as specifically set forth in the disclosure schedules attached
hereto (the "DISCLOSURE SCHEDULE"), the parts of which are numbered to
correspond to the Section numbers of this Agreement, the Company and KFx hereby
jointly and severally (except for those representations and warranties at
Sections 4.27 through 4.31 which are made solely by KFx) represent and warrant
to the Purchaser as follows:

         4.01 Organization, Good Standing and Qualification. Except as set forth
in Part 4.01 of the Disclosure Schedule, the Company is a corporation duly
organized, validly existing and in good standing under the laws of the State of
South Dakota and is duly qualified to conduct business and is in good standing
under the laws of each jurisdiction in which the nature of its business or the
ownership or leasing of its properties requires such qualifications. The Company
has all requisite corporate power and authority to own and operate its
properties and assets, and to carry on its business as presently conducted and
as presently proposed to be conducted. The Company has all requisite power and
authority (a) to execute and deliver (i) this Agreement, (ii) the Stockholders
Agreement attached hereto as Exhibit B (the "STOCKHOLDERS AGREEMENT"), and (iii)
the Marketing Services Agreement attached hereto as Exhibit C (the "MARKETING
SERVICES AGREEMENT"), (b) to issue and sell the Preferred Shares and the shares
of Common Stock issuable upon conversion thereof (the "CONVERSION SHARES") and
(c) to carry out the other provisions of this Agreement, the Stockholders
Agreement and the Marketing Services Agreement (collectively, except for this
Agreement, the "TRANSACTION AGREEMENTS").

                                       11
<PAGE>   16

         4.02 Articles of Incorporation and Bylaws; Records.

                  (a) The Company has delivered or made available to the
Purchaser accurate and complete copies of:

                           (i) The Company's articles of incorporation and
         bylaws, including all amendments thereto;

                           (ii) the stock records of the Company; and

                           (iii) the minutes and other records of the meetings
         and other proceedings (including any actions taken by written Consent
         or otherwise without a meeting) of the stockholders of the Company, the
         board of directors of the Company and all committees of the board of
         directors of the Company.

         There have been no meetings or other proceedings of the stockholders of
the Company, the board of directors of the Company or any committee of the board
of directors of the Company that are not reflected in such minutes or other
records.

                  (b) The Company has never conducted any business under or
otherwise used, for any purpose or in any jurisdiction, any fictitious name,
assumed name, trade name or other name, except as set forth in Part 4.02(b) of
the Disclosure Schedule.

                  (c) There has not been any violation of any of the provisions
of the Company's articles of incorporation or bylaws or of any resolution
adopted by the Company's stockholders, the Company's board of directors or any
committee of the Company's board of directors, and no event has occurred, and no
condition or circumstance exists, except as set forth in Part 4.02(c) of the
Disclosure Schedule that reasonably could be expected (with or without notice or
lapse of time) to constitute or result directly or indirectly in such a
violation.

         4.03 Capitalization.

                  (a) The authorized capital stock of the Company consists of
(i) 30,000,000 shares of Common Stock, par value $.001 per share, of which
14,106,000 shares have been issued and are outstanding, 10,579,500 of which are
held by KFx and 3,526,500 of which are held by the Radl Group; and (ii)
20,000,000 shares of preferred stock, par value $.001 per share, none of which
are issued and outstanding. All issued and outstanding shares of the Company's
capital stock have been duly authorized and validly issued in full compliance
with all applicable securities laws (or pursuant to valid exemptions therefrom)
and other applicable Legal Requirements, and are fully paid and non-assessable.

                  (b) Part 4.03(b) of the Disclosure Schedule sets forth the
names of each holder of Outstanding Options to purchase shares of the Company's
capital stock and, for each such holder, the number of options held, the grant
date, expiration date, vesting schedule and exercise price for such options. The
Company has reserved

                                       12
<PAGE>   17

1,211,605 shares of Common Stock for issuance upon exercise of each of the
options listed in Part 4.03(b) of the Disclosure Schedule. Other than the
options set forth on Part 4.03(b) of the Disclosure Schedule (the "OUTSTANDING
OPTIONS"), there is no: (i) outstanding subscription, option, call, warrant or
right (whether or not currently exercisable) to acquire any shares of the
capital stock or other securities of the Company; (ii) outstanding security,
instrument or obligation that is or may become convertible into or exchangeable
for any shares of the capital stock or other securities of the Company; (iii)
Contract under which the Company is or reasonably would be expected to become
obligated to sell or otherwise issue any shares of its capital stock or any
other securities; or (iv) except as set forth in Part 4.03(b) of the Disclosure
Schedule, condition or circumstance that reasonably would be expected directly
or indirectly to give rise to or provide a basis for the assertion of a claim by
any Person to the effect that such Person is entitled to acquire or receive any
shares of capital stock or other securities of the Company.

                  (c) Except as set forth in Part 4.03(c) of the Disclosure
Schedule, the Company has never repurchased, redeemed or otherwise reacquired
(and has not agreed, committed or offered (in writing or otherwise) to
reacquire) any shares of capital stock or other securities of the Company. Any
securities so reacquired by the Company were (or will have been) reacquired in
full compliance with all applicable Legal Requirements.

                  (d) Prior to the Closing, all of the Preferred Shares and the
Conversion Shares (i) will have been duly authorized and reserved for issuance,
(ii) upon issuance in compliance with the provisions of this Agreement and the
Certificate of Designation will be validly issued, fully paid and
non-assessable, and (iii) upon issuance in compliance with the provisions of
this Agreement and the Certificate of Designation will have been issued in full
compliance with all applicable securities laws and other applicable Legal
Requirements.

         4.04 Authorization; Binding Obligations. All corporate action on the
part of the Company, its officers, directors and stockholders necessary for the
authorization of this Agreement and the Transaction Agreements, and for the
performance of all obligations of the Company hereunder and thereunder and for
the delivery of the Preferred Shares has been taken or will be taken prior to
the Closing. This Agreement and the Transaction Agreements constitute, or upon
execution and delivery will constitute, valid and binding obligations of the
Company enforceable in accordance with their terms, except as such
enforceability may be limited by applicable Legal Requirements relating to
bankruptcy or creditors' rights generally.

         4.05 Non-Contravention; Consents. Neither the execution and delivery of
this Agreement or any of the Transaction Agreements, nor the consummation or
performance of any of the transactions contemplated herein or therein, will
directly or indirectly (with or without notice or lapse of time):

                  (a) except as set forth in Part 4.05(a) of the Disclosure
Schedule, contravene, conflict with or result in a violation of (i) any of the
provisions of the

                                       13
<PAGE>   18

Company's articles of incorporation or bylaws, or (ii) any resolution adopted by
the Company's stockholders, the Company's board of directors or any committee of
the Company's board of directors;

                  (b) contravene, conflict with or result in a violation of, or
give any Governmental Body or other Person the right to challenge any of the
transactions contemplated herein or in the Transaction Agreements or to exercise
any remedy or obtain any relief under, any material Legal Requirement or Order
to which the Company, or any of the assets owned or used by the Company, is
subject;

                  (c) cause the Company to become subject to, or to become
liable for the payment of, any Tax;

                  (d) cause any of the assets owned or used by the Company to be
reassessed or revalued by any Taxing authority or other Governmental Body;

                  (e) except as set forth in Part 4.05(e) of the Disclosure
Schedule, contravene, conflict with or result in a violation of any of the terms
or requirements of, or give any Governmental Body the right to revoke, withdraw,
suspend, cancel, terminate or modify, any Governmental Authorization that is
held by the Company or any of its employees or that otherwise relates to the
Company's business or to any of the assets owned or used by the Company;

                  (f) except as set forth in Part 4.05(f) of the Disclosure
Schedule, contravene, conflict with or result in a violation or Breach of, or
result in a default under, any provision of any of the Company Contracts;

                  (g) except as set forth in Part 4.05(g) of the Disclosure
Schedule, give any Person the right to (i) declare a default or exercise any
remedy under any Company Contract, (ii) accelerate the maturity or performance
of any Company Contract, or (iii) cancel, terminate or modify any Company
Contract;

                  (h) give any Person the right to any payment by the Company or
give rise to any acceleration or change in the award, grant, vesting or
determination of options, warrants, rights, severance payments or other
contingent obligations of any nature whatsoever of the Company in favor of any
Person, in any such case as a result of the change in control of the Company or
otherwise resulting from the transactions contemplated hereby; or

                  (i) result in the imposition or creation of any Encumbrance
upon or with respect to any asset owned or used by the Company.

         Except as set forth in Part 4.05(j) of the Disclosure Schedule, the
Company will not be required to make any filing with or give any notice to, or
to obtain any Consent from, any Person in connection with the execution and
delivery of this Agreement or any Transaction Agreement or the consummation or
performance of any of the transactions contemplated herein or therein.

                                       14
<PAGE>   19

         4.06 Financial Statements.

                  (a) The Company has delivered to the Purchaser the unaudited
balance sheet of the Company as of December 31, 1999, and the related unaudited
statements of operations, changes in stockholders' equity and cash flows of the
Company for the 12 month period then ended (collectively, the "FINANCIAL
STATEMENTS"), which are attached hereto as Exhibit D.

                  (b) The Financial Statements are in accordance with the books
and records of the Company and present fairly in all material respects the
financial position of the Company as of the respective dates thereof and the
results of operations, changes in stockholders' equity and cash flows of the
Company for the periods covered thereby. The Financial Statements have been
prepared in accordance with GAAP, applied on a consistent basis throughout the
periods covered, subject to changes resulting from normal year-end adjustments
and except that such statements do not contain the notes required by GAAP.

                  (c) At the date of the Financial Statements, (i) the Company
had no Liabilities of any nature required by GAAP to be provided for in the
Financial Statements which were not provided for in the Financial Statements,
(ii) except as set forth in Part 4.06(c) of the Disclosure Schedule, the Company
had no other contingent Liabilities that would be required by GAAP to be
disclosed in the notes to the Financial Statements, (iii) the Company has
established reserves for all Liabilities with respect to which GAAP requires
that such resources be established, and (iv) all reserves established by the
Company and set forth in the Financial Statements were adequate for the purposes
for which they were established. As of the date of this Agreement, the Company
has no Liabilities, except for:

                           (A) Liabilities identified as such in the
         "liabilities" column of the Financial Statements or set forth on Part
         4.06(c) of the Disclosure Schedule;

                           (B) accounts payable (of the type required to be
         reflected as current Liabilities in the "liabilities" column of a
         balance sheet prepared in accordance with GAAP) incurred by the Company
         in the Ordinary Course of Business since December 31, 1999;

                           (C) the Company's obligations under the Contracts
         listed in Part 4.12 of the Disclosure Schedule and under Excluded
         Contracts, to the extent that the existence of such obligations is
         ascertainable solely by reference to such Contracts; and

                           (D) Liabilities that have arisen in the Ordinary
         Course of Business since the date of the latest of the Financial
         Statements.

                                       15
<PAGE>   20

                  (d) Other than as set forth on Part 4.06(d) of the Disclosure
Schedule, there has been no material adverse change in the financial position of
the Company since the date of the Financial Statements.

         4.07 Compliance With Legal Requirements. Except as set forth in Part
4.07 of the Disclosure Schedule:

                  (a) the Company is in compliance in all material respects with
each Legal Requirement that is applicable to it or to the conduct of its
business or the ownership or use of any of its assets;

                  (b) no event has occurred and no condition or circumstance
exists that could reasonably be expected (with or without notice or lapse of
time) to constitute or result directly or indirectly in a material violation by
the Company of, or a material failure on the part of the Company to comply with,
any Legal Requirement; and

                  (c) the Company has received no notice or other communication
(in writing or otherwise) pending from any Governmental Body or any other Person
regarding (i) any actual, alleged, possible or potential violation of, or
failure to comply with, any Legal Requirement, or (ii) any actual, alleged,
possible or potential obligation on the part of the Company to undertake, or to
bear all or any portion of the cost of, any cleanup or any remedial, corrective
or response action of any nature arising under any Environmental Law.

         4.08 Governmental Authorizations. Except as set forth in Part 4.08 of
the Disclosure Schedule, the Company holds all Governmental Authorizations
necessary (i) to enable the Company to conduct its business in the manner in
which its business is currently being conducted, and (ii) to permit the Company
to own and use its assets in the manner in which they are currently owned and
used.

         4.09 Proprietary Rights.

                  (a) Except as set forth in Part 4.09 of the Disclosure
Schedule and except for off-the-shelf "shrink wrapped" software products, there
is no material Proprietary Asset that is owned by or licensed to the Company or
that is otherwise used in connection with the Company's business.

                  (b) The Company has taken reasonable and prudent measures and
precautions necessary to protect the confidentiality and value of each
Proprietary Asset identified or required to be identified in Part 4.09 of the
Disclosure Schedule.

                  (c) All current employees and consultants of the Company have
executed agreements obligating them to protect and keep confidential the
Company's proprietary information and providing for the assignment to the
Company of inventions by such employees and consultants, copies of which
agreements have been made available to the Purchaser. The Company is not aware
that any of the employees or consultants of the Company is in violation of any
such agreements. The Company does

                                       16
<PAGE>   21

not believe it is or will be necessary to utilize any inventions, trade secrets
or proprietary information of any of its employees made prior to their
employment by the Company, except for inventions, trade secrets or proprietary
information that have been assigned to the Company or are licensed by such
employees as described in Part 4.09 of the Disclosure Schedule.

                  (d) The Company has conducted its business without
infringement or claim of infringement of any license, patent, copyright, service
mark, trademark, trade name, trade secret or other intellectual property right
of others that could reasonably be expected to have a material adverse effect on
the business or assets of the Company. Except as set forth in Part 4.09(d) of
the Disclosure Schedule, the Company is not infringing, and has not at any time
infringed or received any notice or other communication (in writing or
otherwise) of any actual, alleged, possible or potential infringement of, any
Proprietary Asset owned or used by any other Person. To the Knowledge of the
Company and KFx, no other Person is infringing, and no Proprietary Asset owned
or used by any other Person infringes or conflicts with, any Proprietary Asset
owned or used by the Company.

                  (e) Except as set forth on Part 4.09(e) of the Disclosure
Schedule, the Company owns, licenses or has rights to all of the Proprietary
Assets used by the Company. The Proprietary Assets identified in Part 4.09 of
the Disclosure Schedule constitute all of the Proprietary Assets necessary to
enable the Company to conduct its business in the manner in which its business
is currently being conducted.

                  (f) The names "Pegasus" and "Pegasus Technologies" or any
variations thereof are not being used by the Company's direct competitors.

         4.10 Proceedings; Orders.

                  (a) Except as set forth in Part 4.10 of the Disclosure
Schedule, there is no pending material Proceeding, and, to the Knowledge of the
Company and KFx, no Person has threatened to commence any material Proceeding:

                           (i) that involves the Company or that is directed at
         the Company and otherwise relates to the Company's business or any of
         the assets owned or used by the Company (whether or not the Company is
         named as a party thereto); or

                           (ii) that challenges, or that is reasonably likely to
         have the effect of preventing, delaying, making illegal or otherwise
         interfering with, any of the transactions contemplated herein.

         Except as set forth in Part 4.10 of the Disclosure Schedule, to the
Knowledge of the Company and KFx, no event has occurred, and no claim, dispute
or other condition or circumstance exists, that might directly or indirectly
give rise to or serve as a basis for the commencement of any such Proceeding.

                                       17
<PAGE>   22

                  (b) The Company has delivered to the Purchaser accurate and
complete copies of all pleadings, correspondence and other written materials to
which the Company has access that relate to any of the Proceedings identified in
Part 4.10 of the Disclosure Schedule.

                  (c) There is no Order to which the Company, or any of the
material assets owned or used by the Company, is subject.

                  (d) To the Knowledge of the Company and KFx, no officer or
employee of the Company is subject to any Order that prohibits such officer or
employee from engaging in or continuing any conduct, activity or practice
relating to the Company's business.

                  (e) To the Knowledge of the Company and KFx, there is no
proposed Order directed at the Company that, if issued or otherwise put into
effect, (i) is reasonably likely to have a material adverse effect on the
Company's business, condition, assets, liabilities, operations, financial
performance, net income or prospects (or on any aspect or portion thereof) or on
the ability of the Company to comply with or perform any covenant or obligation
under this Agreement or any of the Transaction Agreements, or (ii) is reasonably
likely to have the effect of preventing, delaying, making illegal or otherwise
interfering with any of the transactions contemplated herein.

         4.11 Title to Assets.

                  (a) Except as set forth on Part 4.11(a) of the Disclosure
Schedule, the Company owns, and has good, valid and marketable title to, all
material assets purported to be owned by it, including:

                           (i) all assets reflected on the Financial Statements;

                           (ii) all assets referred to in Parts 4.09 and 4.14 of
         the Disclosure Schedule and all of the Company's rights under Company
         Contracts; and

                           (iii) all other assets reflected in the Company's
         books and records as being owned by the Company.

Except as set forth in Part 4.11(a) of the Disclosure Schedule, all of said
assets are owned by the Company free and clear of any Encumbrances except liens
for current Taxes and assessments not delinquent or those which are not material
in scope or amount and do not materially interfere with the conduct of the
Company's business.

                  (b) Part 4.11(b) of the Disclosure Schedule identifies all
material assets that are being leased or licensed to the Company. All leases
pursuant to which the Company leases real or personal property are in good
standing and are valid and effective in accordance with their respective terms
and there exists no default thereunder or occurrence or condition that could
result in a default thereunder or termination thereof.

                                       18
<PAGE>   23

The Company's buildings, equipment and other tangible assets are in good
operating condition, have been subjected only to reasonable and customary wear
and tear, and are useable in the Ordinary Course of Business, and the Company
owns, or has a valid leasehold interest in, all assets necessary for the conduct
of its business as presently conducted.

         4.12 Material Contracts.

                  (a) Part 4.12(a) of the Disclosure Schedule identifies each
Company Contract, except for any Excluded Contract, that involves future
payments, performance of services or delivery of goods or materials to or by the
Company of an aggregate amount or value in excess of $25,000 or which otherwise
is material to the business or prospects of the Company (collectively, the
"MATERIAL CONTRACTS"). All nonmaterial Contracts of the Company do not in the
aggregate represent a material portion of the Liabilities of the Company. The
Company has made available to the Purchaser accurate and complete copies of all
Material Contracts identified in Part 4.12(a) of the Disclosure Schedule,
including all amendments thereto.

                  (b) Each Material Contract is valid and in full force and
effect, and is enforceable by the Company in accordance with its terms, except
as such enforceability may be limited by applicable Legal Requirements relating
to bankruptcy or creditors' rights generally.

                  (c) Except as set forth in Part 4.12(c) of the Disclosure
Schedule:

                           (i) the Company is not in default under any Material
         Contract and, to the Knowledge of the Company and KFx, no Person has
         violated or Breached, or declared or committed any default under, any
         Material Contract;

                           (ii) no event has occurred, and no circumstance or
         condition exists, that would reasonably be expected (with or without
         notice or lapse of time) to: (A) result in a violation or Breach of any
         of the provisions of any Material Contract, (B) give any Person the
         right to declare a default or exercise any remedy in respect of a
         default under any Material Contract, (C) give any Person the right to
         accelerate the maturity or performance of any Material Contract, or (D)
         give any Person the right to cancel, terminate or modify any Material
         Contract;

                           (iii) the Company has not waived any of its material
         rights under any Material Contract.

                  (d) Except as set forth in Part 4.12(d) of the Disclosure
Schedule:

                           (i) the Company has no outstanding guarantees and has
         not agreed to cause, insure or become liable for, nor has it pledged
         any of its assets to secure, the performance or payment of any
         obligation or other Liability of any other Person; and

                                       19
<PAGE>   24

                           (ii) the Company is not a party to or bound by (A)
         any joint venture agreement, partnership agreement, profit sharing
         agreement, cost sharing agreement, loss sharing agreement or similar
         Contract, or (B) any Contract that creates or grants to any Person, or
         provides for the creation or grant of, any stock appreciation right,
         phantom stock right or similar right or interest, other than the
         Existing Plan.

                  (e) The performance by the Company of its obligations under
the Material Contracts will not result in any material violation of or failure
to comply with any Legal Requirement.

                  (f) No Person is renegotiating, or has the contractual right
to renegotiate, any amount paid or payable to the Company under any Material
Contract or any other term or provision of any Material Contract.

                  (g) The Contracts identified in Part 4.12(a) of the Disclosure
Schedule and the Excluded Contracts collectively constitute all of the Contracts
necessary to enable the Company to conduct its business in the manner in which
such business is currently being conducted.

                  (h) To the Knowledge of the Company and KFx, no party to any
Material Contract has made a claim to the effect that the Company has failed to
perform an obligation thereunder. To the Knowledge of the Company and KFx, there
is no plan, intention or indication of any contracting party to any Contract to
cause the termination, cancellation or modification of such Contract or to
reduce or otherwise change its activity thereunder so as to adversely affect the
benefits derived or expected to be derived therefrom by the Company.

         4.13 Employees; Employee Benefits.

                  (a) Part 4.13(a) of the Disclosure Schedule contains a list of
all employees of the Company, together with their respective job titles and
salaries. To the Knowledge of the Company and KFx (excluding from the definition
of Knowledge for purposes of this Section 4.13(a) only, Knowledge held by the
employee in question), no employee identified with an asterisk (*) next to his
or her name on Part 4.13(a) of the Disclosure Schedule intends to terminate his
employment with the Company prior to or within 12 months following the Closing.

                  (b) Part 4.13(b) of the Disclosure Schedule contains a list of
individuals who are currently performing services for the Company that are
material to the operation of its business and are classified as "consultants" or
"independent contractors."

                  (c) Part 4.13(c) of the Disclosure Schedule contains a list of
all KFx's employees and consultants who are currently performing services for
the Company who are material to the operation of the Company's business.

                                       20
<PAGE>   25

                  (d) Except as set forth in Part 4.13(d) of the Disclosure
Schedule, the Company does not now have and has not in the past had in effect
any bonuses, profit sharing, pension, deferred compensation or similar plan or
agreement for the benefit of any of its employees.

                  (e) The Company has no collective bargaining agreements with
any of its employees. There is no labor union organizing activity pending or, to
the Knowledge of the Company and KFx, threatened with respect to the Company.
Except for those employment agreements identified in Part 4.13(e) of the
Disclosure Schedule, no employee has any agreement or contract, written or oral,
regarding his employment.

                  (f) To the Knowledge of the Company and KFx (excluding from
the definition of Knowledge for purposes of this Section 4.13(f) only, Knowledge
held by the employee in question), no employee of the Company, nor any
consultant with whom the Company has contracted, is in violation of any term of
any employment contract, proprietary information agreement or any other
agreement relating to the right of any such individual to be employed by, or to
contract with, the Company because of the nature of the business to be conducted
by the Company, and the continued employment by the Company of its present
employees, and the performance of the Company's Contracts with its independent
contractors, will not result in any such violation. The Company has not received
any notice alleging that any such violation has occurred.

         4.14 Receivables; Major Customers.

                  (a) Part 4.14(a) of the Disclosure Schedule provides an
accurate and complete list of all customers with whom the Company currently does
a material amount of business or did a material amount of business during
calendar year 1999.

                  (b) Part 4.14(b) of the Disclosure Schedule accurately
identifies, and provides a breakdown of the revenues received from, each
customer or other Person that accounted for more than $25,000 of the gross
revenues of the Company for calendar year 1999. The Company has not received any
written notice or other written communication indicating that any customer or
other Person identified in Part 4.14(b) of the Disclosure Schedule may cease
dealing with the Company or may otherwise reduce the volume of business
transacted by such Person with the Company below historical levels other than in
the Ordinary Course of Business.

                  (c) Part 4.14(c) of the Disclosure Schedule provides an
accurate and complete aging of all accounts receivable, notes receivable and
other receivables of the Company as of December 31, 1999.

Except as set forth in Part 4.14(c) of the Disclosure Schedule, all existing
accounts receivable of the Company (including those accounts receivable
reflected on the Financial Statements that have not yet been collected and those
accounts receivable that have arisen since December 31, 1999, and have not yet
been collected) represent valid obligations of

                                       21
<PAGE>   26

customers of the Company arising from bona fide transactions entered into in the
Ordinary Course of Business.

         4.15 Major Suppliers. Part 4.15 of the Disclosure Schedule:

                  (a) provides an aging of the Company's accounts payable as of
December 31, 1999;

                  (b) provides an accurate and complete breakdown of all
customer deposits, deferred revenue related to customer contracts and other
deposits held by the Company as of December 31, 1999; and

                  (c) provides an accurate and complete breakdown of the
Company's indebtedness as of December 31, 1999.

         4.16 Tax Matters.

                  (a) Each Tax required to have been paid, or claimed by any
Governmental Body to be payable, by the Company (whether pursuant to any Tax
Return or otherwise) has been duly paid in full on a timely basis. Any Tax
required to have been withheld or collected by the Company has been duly
withheld and collected, and (to the extent required) each such Tax has been paid
to the appropriate Governmental Body.

                  (b) All Tax Returns required to be filed by or on behalf of
the Company (or any of its predecessors in interest) with any Governmental Body
with respect to any Taxable period ending on or before the Closing Date
("COMPANY RETURNS") (i) have been or will be filed when due, and (ii) have been
or will be, when filed, accurately and completely prepared in material
compliance with all applicable Legal Requirements. All amounts shown on the
Company Returns to be due on or before the Closing Date, and all amounts
otherwise payable in connection with the Company Returns on or before the
Closing Date, have been or will be paid on or before the Closing Date.

                  (c) The Company's liability for unpaid Taxes for all periods
ending on or before the date of the Financial Statements does not, in the
aggregate, exceed the amount of the current liability accruals for Taxes
(excluding reserves for deferred Taxes) reported in the Financial Statements.

                  (d) Part 4.16(d) of the Disclosure Schedule accurately
identifies each examination or audit of any Company Return that has been
conducted by any Governmental Body since December 31, 1995. The Company does not
have any audit reports or similar documents relating to Company Returns. Except
as set forth in Part 4.16(d) of the Disclosure Schedule, no extension or waiver
of the limitation period applicable to any of the Company Returns has been
granted (by the Company or any other Person), and no such extension or waiver
has been requested from the Company.

                                       22
<PAGE>   27

                  (e) No claim or other Proceeding is pending or, to the
Knowledge of the Company and KFx, has been threatened against or with respect to
the Company in respect of any Tax. There are no unsatisfied Liabilities for
Taxes (including Liabilities for interest, additions to Tax and penalties
thereon and related expenses) with respect to any notice of deficiency or
similar document received by the Company. The Company has not entered into or
become bound by any agreement or Consent pursuant to Section 341(f) of the Code.
The Company has not been, and will not be, required to include any adjustment in
Taxable income for any Tax period (or portion thereof) pursuant to Section 481
or 263A of the Code or any comparable provision under state or foreign Tax laws
as a result of transactions or events occurring, or accounting methods employed,
prior to the Closing.

                  (f) There is no agreement, plan, arrangement or other Contract
covering any employee or independent contractor or former employee or
independent contractor of the Company that, individually or collectively, could
give rise directly or indirectly to the payment of any amount that would not be
deductible pursuant to Section 280G or Section 162 of the Code.

                  (g) The Company's capital stock does not constitute a United
States real property interest as that term is defined in Section
897(c)(1)(A)(ii) of the Code. The preceding representation is based on a
determination by the Company that the Company is not and has not been a United
States real property holding corporation (as that term is defined in Section
897(c)(2) of the Code) ("USRPHC") during the five-year period preceding the date
of this Agreement.

                  (h) The Company has no net operating losses or other Tax
attributes presently subject to limitation under Code Sections 382, 383 or 384,
or the federal consolidated return regulations.

                  (i) The Company is not liable for Taxes incurred by any
individual, trust, corporation, partnership or other Entity other than Company,
either as a transferee or pursuant to Treasury Regulations Section 1.1502-6, or
pursuant to any other provision of federal, state or local law or regulation.
The Company is not, and has never been, a party to or bound by any Tax indemnity
agreement, Tax sharing agreement, Tax allocation agreement or similar Contract.

         4.17 Securities Laws Compliance; Registration Rights. The Company has
complied with all applicable federal and state securities laws in connection
with all offers and sales of securities prior to the date of this Agreement. The
Company has not heretofore granted any purchaser of its securities the right to
require the Company to register any securities under the Securities Act or to
qualify for any exemption thereunder.

         4.18 Finders and Brokers. Neither the Company, KFx nor any Person
acting on behalf of the Company or KFx has negotiated with any finder, broker,
intermediary or any similar Person in connection with the transactions
contemplated herein.

                                       23

<PAGE>   28

         4.19 Environmental Compliance. The Company is in compliance in all
material respects with all applicable Environmental Laws. The Company has not
received any notice or other communication (in writing or otherwise) that
alleges that the Company is not in compliance with any Environmental Law, and,
to the Knowledge of the Company and KFx, there are no circumstances that may
prevent or interfere with the Company's compliance with any Environmental Law in
the future.

         4.20 Insurance.

                  (a) Part 4.20(a) of the Disclosure Schedule lists the
Company's insurance policies or policies otherwise maintained for the direct or
indirect benefit of, the Company. Such list shall contain a brief description of
the coverage limits of the policies listed, including, without limitation, any
self-insurance or deductible amounts and the limits of the policy.

         Part 4.20(a) of the Disclosure Schedule also identifies (A) any pending
application for insurance that has been submitted by or on behalf of the
Company, (B) each self-insurance or risk-sharing arrangement affecting the
Company or any of its assets, and (C) any pending claims with respect to such
policies. The Company has delivered or made available to the Purchaser accurate
and complete copies of all of the insurance policies identified in Part 4.20(a)
of the Disclosure Schedule (including all renewals thereof and endorsements
thereto) and all of the pending applications identified in Part 4.20(a) of the
Disclosure Schedule.

                  (b) Each of the policies identified in Part 4.20(a) of the
Disclosure Schedule is valid, enforceable and in full force and effect and not
subject, to the Knowledge of Company and KFx, to any actual or possible
cancellation of such policy. The nature, scope and dollar amounts of the
insurance coverage provided by said policies are sufficient to adequately insure
the Company's business, assets, operations, key employees, services and
potential liabilities. Except as set forth in Part 4.20(b) of the Disclosure
Schedule, the Company has paid all premiums due, and has otherwise performed all
of its obligations, under each policy to which it is a party or that provides
coverage to it or any of its directors or officers in connection with their
performance of services to the Company.

         4.21 Related Party Transactions. Except as set forth in Part 4.21 of
the Disclosure Schedule and except for transactions entered into in the Ordinary
Course of Business and on arms-length terms and conditions, to the Knowledge of
the Company and KFx:

                  (a) no Related Party has, and no Related Party has at any time
since December 31, 1999, had, any direct or indirect (other than KFx and the
Radl Group solely by virtue of their ownership of the issued and outstanding
capital stock of the Company) interest of any nature in any asset used in or
otherwise relating to the business of the Company;

                                       24
<PAGE>   29

                  (b) no Related Party is, or has at any time since December 31,
1999, been, indebted to the Company;

                  (c) since December 31, 1999, no Related Party has entered
into, or has had any direct or indirect financial interest in, any Contract,
transaction or business dealing of any nature involving the Company;

                  (d) no Related Party is competing, or has at any time since
December 31, 1999, competed, directly or indirectly, with the Company in any
market served by the Company;

                  (e) no Related Party has any claim or right against the
Company; and

                  (f) no event has occurred, and no condition or circumstance
exists, that would reasonably be expected (with or without notice or lapse of
time) to, directly or indirectly, give rise to or serve as a basis for any claim
or right in favor of any Related Party against the Company.

         4.22 Absence of Changes. Except as set forth in Part 4.22 of the
Disclosure Schedule, since December 31, 1999, to the Knowledge of the Company
and KFx:

                  (a) there has not been any material adverse change in the
Company's business, financial condition, or results of operations, and no event
has occurred that would reasonably be expected to have a material adverse effect
on the Company's business, financial condition, or results of operations;

                  (b) the Company has not (i) declared, accrued, set aside or
paid any dividend or made any other distribution in respect of any shares of
capital stock, or (ii) repurchased, redeemed or otherwise reacquired any shares
of capital stock or other securities;

                  (c) the Company has not sold or otherwise issued any shares of
capital stock or any other securities, except for the grant of options under the
Existing Plan or pursuant to the exercise of the Outstanding Options in
accordance with their terms;

                  (d) the Company has not amended its articles of incorporation
or bylaws, other than as anticipated herein, and has not effected or been a
party to any Acquisition Transaction, recapitalization, reclassification of
shares, stock split, reverse stock split or similar transaction;

                  (e) the Company has not purchased or otherwise acquired any
asset with a purchase price in excess of $25,000 from any other Person, except
for purchases made in the Ordinary Course of Business;

                  (f) the Company has not leased or licensed any asset from any
other Person worth in excess of $25,000;

                                       25
<PAGE>   30

                  (g) the Company has not made any capital expenditure in excess
of $25,000;

                  (h) the Company has not sold or otherwise transferred, and has
not leased or licensed, any material asset to any other Person except in the
Ordinary Course of Business;

                  (i) the Company has not written off as uncollectible, or
established any extraordinary reserve with respect to, any account receivable or
other indebtedness in excess of $25,000;

                  (j) the Company has not pledged or hypothecated any of its
material assets or otherwise permitted any of its material assets to become
subject to any Encumbrance;

                  (k) the Company has not made any material loan or advance to
any other Person (other than advances to employees for travel or business
expenses in the Ordinary Course of Business);

                  (l) the Company has not (i) established or adopted any
Employee Benefit Plan, or (ii) other than in the Ordinary Course of Business,
paid any bonus or made any profit sharing or similar payment to, or increased
the amount of the wages, salary, commissions, fringe benefits or other
compensation or remuneration payable to, any of its directors, officers or
employees;

                  (m) the Company has not increased the compensation of any of
its officers, or the rate of pay of its employees as a group, except as part of
regular compensation increases in the Ordinary Course of Business;

                  (n) there has been no resignation or termination of employment
of any officer or key employee of the Company;

                  (o) there has been no labor dispute involving the Company or
its employees and none is pending or, to the Knowledge of the Company and KFx,
threatened;

                  (p) the Company has not incurred, assumed or otherwise become
subject to any Liability, other than accounts payable (of the type required to
be reflected as current liabilities in the "liabilities" column of a balance
sheet prepared in accordance with GAAP) incurred by the Company in the Ordinary
Course of Business;

                  (q) the Company has not discharged any Encumbrance or
discharged or paid any indebtedness or other Liability, except for accounts
payable that have been incurred by the Company since December 31, 1999, in the
Ordinary Course of Business, and Liabilities that have been discharged or paid
in the Ordinary Course of Business;

                                       26
<PAGE>   31

                  (r) the Company has not forgiven any debt in excess of $25,000
or otherwise released or waived any material right or claim;

                  (s) the Company has not changed any of its methods of
accounting or accounting practices in any material respect;

                  (t) the Company has not taken any action outside the Ordinary
Course of Business; and

                  (u) the Company has not agreed, committed or offered (in
writing or otherwise), and has not attempted, to take any of the actions
referred to in clauses "(c)" through "(t)" above.

         4.23 Reorganization Transaction. The Agreement, dated December 13,
1999, by and between KFx and the Radl Group (the "PTI AGREEMENT"), and the other
agreements referenced therein and executed in connection with the consummation
of the transaction therein contemplated (together with the PTI Agreement, the
"RESTRUCTURING AGREEMENTS"), are valid and binding obligations and in full force
and effect, and are enforceable in accordance with their terms, except as such
enforceability may be limited by applicable Legal Requirements relating to
bankruptcy or creditors' rights generally. KFx is not in default under any of
the Restructuring Agreements and has not violated or breached, or declared or
committed any default thereunder and, to the Knowledge of the Company and KFx,
the Radl Group is not in default under the Restructuring Agreements nor has it
violated or breached or declared a default thereunder. No event has occurred,
and no circumstance or condition exists, that would reasonably be expected (with
or without notice or lapse of time) to (A) result in a violation or breach of
any of the provisions of any of the Restructuring Agreements or (B) give any
person the right to cancel, terminate or modify any of the Restructuring
Agreements. All transfers of equity interests set forth in the Restructuring
Agreements are valid, in full force and effect, and enforceable in accordance
with their terms and the Company has the full benefit of all material contracts
and agreements to which Net Power Solutions, LLC, a Delaware limited liability
company, and Pegasus Technologies Limited, an Ohio limited liability company,
were parties prior to the transactions contemplated by the Restructuring
Agreements. KFx and the Radl Group, individually and collectively, have fully
performed all of their respective covenants and obligations set forth in the
Restructuring Agreements; provided, however, that if performance was required
prior to the date of this Agreement, the obligations set forth in Sections 6.1.3
and 6.2.3 of the PTI Agreement have not been fully performed.

         4.24 Benefit Plans; ERISA.

                  (a) Part 4.24 of the Disclosure Schedule lists (i) all
Employee Benefit Plans, (ii) all employment agreements, including, but not
limited to, any individual benefit arrangement, policy or practice with respect
to any current or former employee or director of the Company or Member of the
Controlled Group, and (iii) all other employee benefit, bonus or other incentive
compensation, stock option, stock purchase, stock

                                       27
<PAGE>   32

appreciation, severance pay, lay-off or reduction in force, change in control,
sick pay, vacation pay, salary continuation, retainer, leave of absence,
educational assistance, service award, employee discount, fringe benefit plans,
arrangements, policies or practices, whether legally binding or not, to which
the Company or any Member of the Controlled Group or which KFx on behalf of the
Company, maintains, contributes to or has any obligation to or liability for
with respect to Company employees (collectively, the "PLANS").

                  (b) None of the Company or any Member of the Controlled Group
has ever contributed to, or ever been obligated to contribute to, a
Multiemployer Plan.

                  (c) The Company does not maintain or contribute to any welfare
benefit plan that provides health benefits to an employee after the employee's
termination of employment or retirement except as required under Section 4980B
of the Code and Sections 601 through 608 of ERISA.

                  (d) Each Plan that is an Employee Benefit Plan complies by its
terms and in operation in all material respects with the requirements provided
by any and all statutes, Orders or governmental rules or regulations currently
in effect and applicable to such Plan, including but not limited to ERISA and
the Code. In particular, the SAR/SEP sponsored by the Company complies with all
participation, nondiscrimination and vesting requirements of Section 408(k)(6)
of the Code.

                  (e) All reports, forms and other documents required to be
filed with any Government Body with respect to any Plan (including summary plan
descriptions, Forms 5500 and summary annual reports) have been timely filed and
are accurate in all material respects.

                  (f) None of the Plans is, nor has the Company or any Member of
the Controlled Group ever maintained or contributed to a Plan that was, intended
to qualify under Section 401(a) of the Code.

                  (g) All contributions for all periods ending prior to the
Closing Date (including periods from the first day of the current plan year to
the Closing Date) have been made prior to the Closing Date by the Company in
accordance with past practice and the recommended contribution in any applicable
actuarial report, except for amounts not yet required to be contributed.

                  (h) All insurance premiums have been paid in full, subject
only to normal retrospective adjustments in the ordinary course, with regard to
the Plans for plan years ending on or before the Closing Date.

                  (i) With respect to each Plan:

                           (i) no prohibited transactions (as defined in Section
         406 or 407 of ERISA or Section 4975 of the Code) have occurred for
         which a statutory exemption is not available;

                                       28
<PAGE>   33

                           (ii) no action or claims (other than routine claims
         for benefits made in the ordinary course of Plan administration for
         which Plan administrative review procedures have not been exhausted)
         are pending, threatened or imminent against or with respect to the
         Plan, any employer who is participating (or who has participated) in
         any Plan or any fiduciary (as defined in Section 3(21) of ERISA), of
         the Plan;

                           (iii) neither the Company nor KFx has any Knowledge
         of any facts that could give rise to any such action or claim; and

                           (iv) it provides that it may be amended or terminated
         at any time and, except for previously accrued benefits protected, all
         benefits payable to current, terminated employees or any beneficiary
         may be amended or terminated by the Company at any time without
         liability.

                  (j) All of the Plans, to the extent applicable, are in
compliance with the continuation of group health coverage provisions contained
in Section 4980B of the Code and Section 601 through 608 of ERISA.

                  (k) True, correct and complete copies of all documents
creating or evidencing any Plan have been made available to the Purchaser, and
true, correct and complete copies of all reports, forms and other documents
required to be filed with any governmental entity (including summary plan
descriptions, Forms 5500 and summary annual reports for all plans subject to
ERISA) have been made available to the Purchaser. There are no negotiations,
demands or proposals that are pending or have been made which concern matters
now covered, or that would be covered, by the type of agreements listed in Part
4.24 of the Disclosure Schedule.

                  (l) All expenses and liabilities relating to all of the Plans
have been fully and properly accrued on the Company's books and records and
disclosed in accordance with GAAP and in Plan financial statements.

         4.25 Full Disclosure.

                  (a) Neither this Agreement (including all Schedules and
Exhibits hereto) nor any of the Transaction Agreements contains or will contain
any untrue statement of fact; and none of such documents, when taken together,
omits or will omit to state any fact necessary to make any of the
representations, warranties or other statements or information contained therein
not misleading.

                  (b) All of the information set forth in the Disclosure
Schedule, and all other information regarding the Company and its business,
financial condition or results of operations that has been furnished to the
Purchaser by or on behalf of the Company or KFx or any of their respective
Representatives, when taken together, is accurate and complete in all material
respects.

                                       29

<PAGE>   34

                  (c) The Company and KFx have provided the Purchaser and their
respective Representatives with full and complete access to all of the Company's
records and other documents and data.

         4.26 Affiliated Assets. Part 4.26 of the Disclosure Schedule lists all
assets, including all licenses, rights associated with any Contracts or
Proprietary Assets held by any Affiliate of the Company that are either (a)
currently used in the Company's business or services or (b) contemplated in the
Business Plan to be used in the Company's business or services (the "AFFILIATED
ASSETS").

         4.27 KFx Organization, Good Standing and Qualification. KFx is a
corporation duly organized, validly existing and in good standing under the laws
of the State of Delaware. KFx has all requisite corporate power and authority to
own and operate its properties and assets, and to carry on its business as
presently conducted and as presently proposed to be conducted. KFx has all
requisite power and authority (a) to execute and deliver (i) this Agreement,
(ii) the Stockholders Agreement, and (iii) the Put Agreement attached hereto as
Exhibit E (the "PUT AGREEMENT"), (b) to sell Common Shares and (c) to carry out
the other provisions of this Agreement, the Stockholders Agreement and the Put
Agreement.

         4.28 KFx Authorization; Binding Obligations. All corporate action on
the part of KFx, its officers, directors and stockholders necessary for the
authorization of this Agreement, the Stockholders Agreement and the Put
Agreement, and for the performance of all obligations of the Company hereunder
and thereunder and for the delivery of the Common Shares has been taken or will
be taken prior to the Closing. This Agreement, the Stockholders Agreement and
the Put Agreement constitute, or upon execution and delivery will constitute,
valid and binding obligations of KFx enforceable in accordance with their terms,
except as such enforceability may be limited by applicable Legal Requirements
relating to bankruptcy or creditors' rights generally.

         4.29 Ownership of Common Shares. KFx is the record and beneficial owner
of the Common Shares. KFx owns and holds, and will on the Closing Date own, hold
and pass on to the Purchaser, good and valid title to the Common Shares, free
and clear of all Encumbrances. KFx has full right and power to sell, assign,
exchange, transfer and deliver the Common Shares to the Purchaser as provided in
this Agreement.

         4.30 KFx Non-Contravention; Consents. Neither the execution and
delivery of this Agreement, the Stockholders Agreement or the Put Agreement, nor
the consummation or performance of any of the transactions contemplated herein
or therein, will directly or indirectly (with or without notice or lapse of
time):

                  (a) contravene, conflict with or result in a violation of (i)
any of the provisions of KFx's certificate of incorporation or bylaws, or (ii)
any resolution adopted by KFx's stockholders, KFx's board of directors or any
committee of KFx's board of directors;

                                       30
<PAGE>   35

                  (b) contravene, conflict with or result in a violation of, or
give any Governmental Body or other Person the right to challenge any of the
transactions contemplated herein or therein or to exercise any remedy or obtain
any relief under, any Legal Requirement or any Order to which KFx, or any of the
assets owned or used by KFx, is subject;

                  (c) contravene, conflict with or result in a violation of any
of the terms or requirements of, or give any Governmental Body the right to
revoke, withdraw, suspend, cancel, terminate or modify, any Governmental
Authorization that is held by KFx and that relates to the Company's business or
to any of the assets owned or used by the Company;

                  (d) except for the consent of Thermo Ecotek Corporation which
is required in connection with the transactions contemplated hereby and pursuant
to a Contract between KFx and Thermo Ecotek Corporation, contravene, conflict
with or result in a violation or Breach of, or result in a default under, any
provision of any material Contract binding upon KFx or by which any of the
assets of KFx are bound; or

                  (e) result in the imposition or creation of any Encumbrance on
the Common Shares.

         4.31 KFx Debt. As of December 31, 1999, the debt owed by the Company or
its Affiliates (including Net Power Solutions, LLC, a Delaware limited liability
company, and Pegasus Technologies Limited, an Ohio limited liability company) to
KFx (including principal and accrued interest, the "KFx DEBT") had a total
balance of $3,629,775.

5.       REPRESENTATIONS AND WARRANTIES OF THE PURCHASER

         The Purchaser hereby represents and warrants to the Company and KFx as
follows:

         5.01 Organization and Good Standing. The Purchaser is a corporation
duly organized, validly existing and in good standing under the laws of the
State of Delaware. The Purchaser has all requisite power and authority (a) to
execute and deliver (i) this Agreement, (ii) the Stockholders Agreement, (iii)
the Marketing Services Agreement, and (iv) the Put Agreement, and (b) to carry
out the other provisions of this Agreement, the Stockholders Agreement , the
Marketing Services Agreement and the Put Agreement.

         5.02 Requisite Power and Authority. The Purchaser has the absolute and
unrestricted right, power and authority to enter into and to perform its
obligations under this Agreement and the Transaction Agreements, and the
execution, delivery and performance by the Purchaser of this Agreement and the
Transaction Agreements, and the consummation or performance of the transactions
contemplated herein and therein, have been duly authorized by all necessary
action on the part of the Purchaser. Each of this Agreement and the Transaction
Agreements constitutes, or upon execution and delivery will constitute, the
legal, valid and binding obligation of the Purchaser, enforceable

                                       31
<PAGE>   36

against the Purchaser in accordance with its terms, except as such
enforceability may be limited by applicable Legal Requirements relating to
bankruptcy or creditors' rights generally.

         5.03 Non Contravention. Neither the execution and delivery of this
Agreement or any other Transaction Agreement, nor the consummation or
performance of any of the transactions contemplated herein or therein, will
directly or indirectly contravene, conflict with or result in a violation of (i)
any of the provisions of the Purchaser's articles of incorporation, bylaws,
partnership agreement or other document of governance, as applicable, or (ii)
any resolution adopted by the Purchaser's stockholders, the Purchaser's board of
directors or any committee of the Purchaser's board of directors or the
Purchaser's investment committee or other governing body, as applicable.

         5.04 Investment Representations. The Purchaser understands that neither
the Preferred Shares, the Common Shares nor the Conversion Shares have been
registered under the Securities Act. The Purchaser also understands that the
Preferred Shares and the Common Shares are being offered and sold pursuant to an
exemption from registration contained in the Securities Act based in part upon
the Purchaser's representations contained in this Agreement.

                  (a) Purchaser Bears Economic Risk. The Purchaser has
substantial experience in evaluating and investing in private placement
transactions of securities in companies similar to the Company so that it is
capable of evaluating the merits and risks of its investment in the Company and
has the capacity to protect its own interests. Except for the rights of the
Purchaser under the Put Agreement, the Purchaser shall bear the economic risk of
this investment indefinitely unless the Common Shares or the Preferred Shares
(or the Conversion Shares) are registered pursuant to the Securities Act, or an
exemption from registration is available. Except as contemplated by the
Stockholders Agreement, the Purchaser understands that the Company has no
present intention of registering the Preferred Shares, the Conversion Shares or
any shares of its Common Stock (including the Common Shares). The Purchaser also
understands that there is no assurance that any exemption from registration
under the Securities Act will be available and that, even if available, such
exemption may not allow the Purchaser to transfer all or any portion of the
Preferred Shares, the Common Shares or the Conversion Shares under the
circumstances, in the amounts or at the times the Purchaser might propose.

                  (b) Acquisition for Own Account. The Purchaser is acquiring
the Preferred Shares, the Common Shares and the Conversion Shares for its own
account for investment only, and not with a view towards their distribution in
violation of applicable securities laws.

                  (c) Purchaser Can Protect Its Interest. By reason of its or of
its management's business or financial experience, the Purchaser has the
capacity to protect its own interests in connection with the transactions
contemplated by this Agreement. Further, the Purchaser is aware of no
publication of any advertisement in connection with the transactions
contemplated by this Agreement.

                                       32

<PAGE>   37

                  (d) Accredited Investor. The Purchaser represents that it is
an "accredited investor" within the meaning of Regulation D under the Securities
Act.

                  (e) Company Information. The Purchaser has had an opportunity
to discuss the Company' s business, management and financial affairs with
directors, officers and management of the Company. The Purchaser has also had
the opportunity to ask questions of, and receive answers from, the Company and
its management regarding the terms and conditions of this investment.

                  (f) Rule 144. Except for the rights of the Purchaser under the
Put Agreement, the Purchaser acknowledges and agrees that the Common Shares, the
Preferred Shares and the Conversion Stock must be held indefinitely unless they
are subsequently registered under the Securities Act or an exemption from such
registration is available. The Purchaser has been advised or is aware of the
provisions of Rule 144 promulgated under the Securities Act, which permits
limited resale of shares purchased in a private placement subject to the
satisfaction of certain conditions, including, among other things: the
availability of certain current public information about the Company, the resale
occurring not less than one year after a party has purchased and paid for the
security to be sold, the sale being through an unsolicited "broker's
transaction" or in transactions directly with a market maker (as said term is
defined under the Securities Exchange Act of 1934, as amended) and the number of
shares being sold during any three-month period not exceeding specified
limitations.

         5.05 Consents. All Consents, approvals, Orders, or authorizations of,
or registration, qualification, designation, declaration or filing with any
Governmental Body or banking authority required on the part of the Purchaser in
connection with the consummation of the transactions contemplated in this
Agreement have been or shall have been obtained prior to and shall be effective
as of the Closing.

6.       COVENANTS OF THE COMPANY AND KFx

         6.01 Access and Investigation. The Company and KFx shall each use its
Best Efforts to ensure that, at all times during the Pre-Closing Period:

                  (a) the Company and KFx and their respective Representatives
provide the Purchaser and its Representatives with reasonable access to the
Company's Representatives, personnel and assets and to all existing books,
records, Tax Returns, work papers, Company Contracts and other documents and
information relating to the Company;

                  (b) the Company and KFx and their respective Representatives
provide the Purchaser and its Representatives with such copies of existing
books, records, Tax Returns, work papers and other documents and information
relating to the Company as the Purchaser may request in good faith; and

                                       33
<PAGE>   38

                  (c) the Company and KFx and their respective Representatives
compile and provide the Purchaser and its Representatives with such additional
financial, operating and other data and information regarding the Company as the
Purchaser or its Representatives may request in good faith.

         6.02 Operation of Business. The Company and KFx shall each use its Best
Efforts to ensure that, during the Pre-Closing Period:

                  (a) the Company conducts its operations exclusively in the
Ordinary Course of Business and in the same manner as such operations have been
conducted prior to the date of this Agreement;

                  (b) except as contemplated by Sections 6.1.3 and 6.2.3 of the
PTI Agreement, the Company preserves intact its current business organization
and maintains its relations and good will with all suppliers, customers,
landlords, creditors, licensors, licensees, employees and other Persons having
business relationships with the Company;

                  (c) the Company keeps in full force all insurance policies
identified in Part 4.20(a) of the Disclosure Schedule;

                  (d) the Company's officers confer regularly with the Purchaser
concerning operational matters and otherwise report regularly to the Purchaser
concerning the status of the Company's business, condition, assets, liabilities,
operations, financial performance and prospects;

                  (e) the Company immediately notifies the Purchaser of any
inquiry, proposal or offer from any Person relating to any Acquisition
Transaction;

                  (f) the Company does not declare, accrue, set aside or pay any
dividend or make any other distribution in respect of any shares of capital
stock, and does not repurchase, redeem or otherwise reacquire any shares of
capital stock or other securities (except as expressly contemplated by this
Agreement);

                  (g) the Company does not sell or otherwise issue any shares of
capital stock or any other securities, other than pursuant to the exercise of
the Outstanding Options or the granting of new options under the Existing Plan;

                  (h) the Company does not amend its articles of incorporation
or bylaws (except as expressly contemplated by this Agreement), and does not
effect or become a party to any Acquisition Transaction, recapitalization,
reclassification of shares, stock split, reverse stock split or similar
transaction (other than in connection with the transactions contemplated by this
Agreement and the Transaction Agreements);

                  (i) the Company does not form any subsidiary (other than the
formation of NPS, LLC as contemplated by Section 7.10) or acquire any equity
interest or other interest in any other Entity;

                                       34
<PAGE>   39

                  (j) the Company does not make any capital expenditure, except
for capital expenditures that are made in the Ordinary Course of Business, and
that, when added to all other capital expenditures made on behalf of the Company
during the Pre-Closing Period, do not exceed $25,000 in the aggregate;

                  (k) the Company does not enter into or permit any of the
assets owned or used by the Company to become bound by any Material Contract,
except for any Excluded Contract and any Contract entered into in the Ordinary
Course of Business;

                  (l) the Company does not incur, assume or otherwise become
subject to any material Liability, except for current Liabilities (of the type
required to be reflected in the "liabilities" column of a balance sheet prepared
in accordance with GAAP) incurred in the Ordinary Course of Business and
Liabilities to KFx;

                  (m) the Company does not establish or adopt any Employee
Benefit Plan, and, except in the Ordinary Course of Business, does not pay any
bonus or make any profit sharing or similar payment to, or increase the amount
of the wages, salary, commissions, fringe benefits or other compensation or
remuneration payable to, any of its directors, officers or employees;

                  (n) the Company does not change any of its methods of
accounting or accounting practices in any material respect;

                  (o) the Company does not make any material Tax election;

                  (p) the Company promptly notifies the Purchaser following the
commencement of any material Proceeding involving or in any way relating to the
Company;

                  (q) the Company does not enter into any transaction or take
any other action of the type referred to in Section 4.22;

                  (r) the Company does not enter into any transaction or take
any other action outside the Ordinary Course of Business;

                  (s) the Company does not enter into any transaction or take
any other action that might cause or constitute a Breach of any representation
or warranty made by the Company or KFx in this Agreement; and

                  (t) the Company does not agree, commit or offer (in writing or
otherwise), and does not attempt, to take any of the actions described in
clauses "(f)" through "(s)" of this Section 6.02.

         6.03 Filings and Consents. The parties shall use their Best Efforts to
ensure that:

                                       35
<PAGE>   40

                  (a) each filing or notice required to be made or given
(pursuant to any applicable Legal Requirement, Order or Material Contract, or
otherwise) any such party in connection with the execution and delivery of this
Agreement or any of the Transaction Agreements or in connection with the
consummation or performance of any of the transactions contemplated herein or
therein is made or given as soon as possible after the date of this Agreement;

                  (b) each Consent required to be obtained (pursuant to any
applicable Legal Requirement, Order or Material Contract, or otherwise) by each
such party in connection with the execution and delivery of this Agreement or
any of the Transaction Agreements or in connection with the consummation or
performance of any of the transactions contemplated herein or therein (including
each of the Consents identified in Part 4.05(j) of the Disclosure Schedule) is
obtained as soon as possible after the date of this Agreement and remains in
full force and effect through the Closing Date;

                  (c) a copy of each filing made, each notice given and each
Consent obtained by such party during the Pre-Closing Period is promptly made
available to the other parties; and

                  (d) during the Pre-Closing Period, their respective
Representatives cooperate with the other parties, and prepare and make available
such documents and take such other actions as the other parties may request in
good faith, in connection with any filing, notice or Consent that the other
parties are required or elect to make, give or obtain.

         6.04 Notification; Updates to Disclosure Schedule.

                  (a) During the Pre-Closing Period, the Company and KFx shall
promptly notify the Purchaser, and the Purchaser shall promptly notify the
Company and KFx, in writing of:

                           (i) the discovery of any event, condition, fact or
         circumstance that occurred or existed on or prior to the date of this
         Agreement and that caused or constitutes a Breach of any representation
         or warranty made by any party in this Agreement;

                           (ii) any event, condition, fact or circumstance that
         occurs, arises or exists after the date of this Agreement and that
         would cause or constitute a Breach of any representation or warranty
         made by a party in this Agreement if (A) such representation or
         warranty had been made as of the time of the occurrence, existence or
         discovery of such event, condition, fact or circumstance, or (B) such
         event, condition, fact or circumstance had occurred, arisen or existed
         on or prior to the date of this Agreement;

                           (iii) any party's Breach of any covenant or
         obligation set forth in this Agreement; and

                                       36
<PAGE>   41

                           (iv) any event, condition, fact or circumstance that
         may make the timely satisfaction of any of the conditions set forth in
         Article 7 impossible or unlikely.

                  (b) If any event, condition, fact or circumstance that is
required to be disclosed pursuant to Section 6.04(a) requires any change in the
Disclosure Schedule, or if any such event, condition, fact or circumstance would
require such a change assuming the Disclosure Schedule were dated as of the date
of the occurrence, existence or discovery of such event, condition, fact or
circumstance, then the Company and KFx shall promptly deliver to the Purchaser
an update to the Disclosure Schedule specifying such change. No such update
shall be deemed to supplement or amend the Disclosure Schedule for the purpose
of (i) determining the accuracy of any of the representations and warranties
made by the Company or KFx in this Agreement, or (ii) determining whether any of
the conditions set forth in Article 7 has been satisfied; provided, however,
that they shall be deemed an amendment to the Disclosure Schedule for purposes
of Article 9 hereof. In addition, the Company and KFx and their respective
Representatives shall provide the Purchaser and its Representatives with (i) any
additional documents and information responsive to a request of the Purchaser
that becomes available subsequent to the Company's or KFx's response to such
request and (ii) any documents or information that become available that modify,
update or supplement any documents or other information already provided to the
Purchaser , in each case as promptly as reasonably practicable after such
additional information, documents or materials become available.

         6.05 Indebtedness of Related Parties. Except for the KFx Debt (which is
addressed in the succeeding sentence), the Company and KFx shall cause all
indebtedness and other Liabilities of each Related Party to the Company
(including any such indebtedness or other Liability identified in Part 4.21 of
the Disclosure Schedule, but excluding travel advances to employees of the
Company in the Ordinary Course of Business) to be discharged and paid in full
prior to the Closing. In the case of the KFx Debt, the balance of the KFx Debt
as of December 31, 1999 shall be converted into shares of Series A Preferred
Stock at the Preferred Per Share Price and the amount of the KFx Debt as of the
Closing Date in excess of the balance thereof as of December 31, 1999 shall
remain a Liability of the Company.

         6.06 No Negotiation. The Company and KFx shall ensure that, during the
Pre-Closing Period, none of the Company, KFx or any of the Company's or KFx's
Representatives directly or indirectly shall, without the Purchaser's prior
written consent (which shall not be unreasonably withheld):

                  (a) solicit or encourage the initiation of any inquiry,
proposal or offer from any Person (other than the Purchaser and those Persons
listed on Part 4.03(b) of the Disclosure Schedule) relating to any Acquisition
Transaction;

                  (b) participate in any discussions or negotiations with, or
provides any non-public information to, any Person (other than the Purchaser and
those Persons listed on Part 4.03(b) of the Disclosure Schedule) relating to any
Acquisition Transaction; or

                                       37
<PAGE>   42

                  (c) consider the merits of any unsolicited inquiry, proposal
or offer from any Person (other than the Purchaser and those Persons listed on
Part 4.03(b) of the Disclosure Schedule) relating to any Acquisition
Transaction.

         6.07 Best Efforts. During the Pre-Closing Period, the Company and KFx
shall use their respective Best Efforts to cause the conditions set forth in
Article 7, and the Purchaser shall use its Best Efforts to cause the conditions
set forth in Article 8, to be satisfied on a timely basis, and shall not take
any action or omit to take any action, the taking or omission of which would or
could reasonably be expected to result in any of the representations and
warranties set forth in this Agreement becoming untrue, in any of the conditions
of Closing set forth in Article 7 or Article 8, as the case may be, not being
satisfied or in the business of the Company becoming materially less valuable.

         6.08 Confidentiality. The Company, the Purchaser, and KFx shall ensure
that, during the Pre-Closing Period:

                  (a) the Company, the Purchaser, KFx and their respective
Representatives and Affiliates keep strictly confidential the existence and
terms of this Agreement, except as otherwise required by any applicable Legal
Requirement or by the terms of this Agreement;

                  (b) none of the Company, the Purchaser, KFx or any of their
respective Representatives issues or disseminates any press release or other
publicity or otherwise makes any disclosure of any nature (to any of the
Company's suppliers, customers, landlords, creditors or employees or to any
other Person) regarding any of the transactions contemplated herein, except to
the extent that such party is required by law to make any such disclosure
regarding the transactions contemplated herein; and

                  (c) if the Company, KFx, the Purchaser or any of their
Affiliates is required by law to make any disclosure regarding the transactions
contemplated herein, such party advises the other parties, at least five
business days (to the extent practicable) before making such disclosure, of the
nature and content of the intended disclosure.

         6.09 Stock Option Plan. The Company and KFx shall ensure that prior to
the Closing:

                  (a) the Company takes all necessary and appropriate steps to
assure that all outstanding options under the Existing Plan have been issued in
compliance with applicable Legal Requirements and to take and complete all
appropriate corrective measures to the satisfaction of Purchaser with respect to
any options that have not been issued in compliance therewith; and

                  (b) the Company shall not grant any options (or commit to
grant any options) to purchase shares in the Company except under the Existing
Plan, it being understood that such options shall be granted or committed solely
(i) in connection with recruitment of new employees to the Company and (ii) if
such options have an exercise

                                       38
<PAGE>   43

price equal to the fair market value of each share of the Common Stock for which
such options are exercisable as of the date of the grant.

         6.10 Approval of Certificate of Designation; Authorization of Preferred
Shares. The Company and KFx shall ensure that during the Pre-Closing Period:

                  (a) the Company approves or adopts, as applicable, by all
necessary further action of its board of directors and stockholders, the
Certificate of Designation and KFx shall vote its shares and execute and deliver
or cause to be executed and delivered any instruments, certificates, actions by
written Consent of stockholders or other documents or take such other actions
(or refrain from taking such actions) as may reasonably be required for the
purposes of approving the adoption of the Certificate of Designation;

                  (b) the Company authorizes, by all necessary further action of
its board of directors and stockholders, the sale and issuance to the Purchaser
of the Preferred Shares and the issuance and reservation of the Conversion
Shares to be issued upon conversion of the Preferred Shares; and

                  (c) the Preferred Shares and the Conversion Shares authorized
by the Company's board of directors and stockholders have the rights,
preferences, privileges and restrictions set forth in the Certificate of
Designation.

         6.11 Affiliated Assets. The Affiliated Assets shall either (a) be
assigned to the Company or (b) the Company shall obtain rights from the
applicable Affiliate sufficient to allow the Company to enjoy full use the
Affiliated Assets for the conduct of its business and the provision of its
services, which rights shall be satisfactory to the Purchaser in its sole
discretion.

         6.12 Unconverted KFx Debt. Within 45 days after the Closing Date, the
Company and KFx shall deliver to the Purchaser a detailed summary of the amount
of the KFx Debt as of the Closing Date. The portion of such KFx Debt that is not
converted into Series A Preferred Stock of the Company in accordance with
Section 7.13 hereof shall be evidenced by a promissory note of the Company to
KFx, which note shall (i) be payable solely out of the excess cash flow (meaning
the cash flow of the Company in excess of its operating expenses) of the
Company, (ii) bear interest at the rate of six percent (6%) per annum, and (iii)
be in form reasonably satisfactory to the Purchaser.

         6.13 Operating Budget. Within 30 days after the Closing Date, the
Company shall deliver to the Purchaser a final operating budget for the years
2000 and 2001, which operating budget shall be reasonably satisfactory to the
Purchaser and, following the Purchaser's approval thereof, shall be presented to
the board of directors of the Company for approval.

         6.14 Service Marks. Following the Closing, KFx shall diligently
complete the prosecution of the service marks for "Net Power Solutions" (Serial
No. 75/546,801) and

                                       39
<PAGE>   44

"Energy Solutions for the Environment" (Serial No. 75/632,167) (together, the
"SERVICE MARKS") and shall bear all costs and expenses associated therewith.
Promptly upon the receipt by KFx of the Service Marks or either of them, KFx
shall irrevocably assign all of its right, title and interest in such Service
Mark(s) to the Company without any further consideration and the Company shall
grant to KFx, on terms reasonably acceptable to the board of directors of the
Company, a non-exclusive license to utilize the Service Marks or either of them
in the business of KFx so long as such use does not conflict with the business
or operations of the Company.

         6.15 Computer Associates International, Inc. Within 30 days after the
Closing Date, the Company shall cause Net Power Solutions, LLC to assign to the
Company all of the right, title and interest of Net Power Solutions, LLC in, to
and under that certain Computer Associates International, Inc. Reseller
Agreement (CA Agreement No. 569117-001) between Computer Associates
International, Inc. and Net Power Solutions, Inc. (sic), dated July 31, 1998
from Net Power Solutions, LLC. To the extent required in connection with such
assignment, the Company shall use its Best Efforts to obtain the consent of
Computer Associates International, Inc.

7.       CONDITIONS PRECEDENT TO PURCHASER'S OBLIGATIONS

         The obligation of the Purchaser to purchase and pay for the Closing
Date Preferred Shares and the Common Shares shall be subject to the satisfaction
(or waiver by the Purchaser) of the following conditions as of the Closing Date:

         7.01 Representations and Warranties. The representations and warranties
of the Company and KFx contained in this Agreement shall be (i) in the case of
representations and warranties qualified by materiality or material adverse
effect or the like, true and correct on and as of the Closing Date, and (ii) in
the case of representations and warranties not qualified by materiality or
material adverse effect or the like, true and correct in all material respects
as of the Closing Date.

         7.02 Execution of Agreements. Concurrent with the Closing, (a) the
Company, the Purchaser and the existing stockholders of the Company shall have
executed and delivered the Stockholders Agreement; (b) the Purchaser, the
Company and the Marketing Entity shall have executed and delivered the Marketing
Services Agreement; and (c) the Purchaser and KFx shall have executed and
delivered the Put Agreement.

         7.03 Certificate of Designation. Prior to or concurrent with the
Closing, the Company shall have filed the Certificate of Designation with the
Secretary of State of the State of South Dakota and shall have delivered a
certified copy of such Certificate of Designation to the Purchaser.

         7.04 Satisfactory Completion of Pre-Investment Review. The Purchaser
shall have completed its pre-investment investigation and review of the
Company's business, financial condition, or results of operations including,
without limitation, confirmation that (i) the Company is entitled to use any
updates, upgrades, improvements or

                                       40
<PAGE>   45

enhancements of any software or intellectual property rights necessary to
develop and use NeuSIGHT, and (ii) the key employees of the Company are subject
to written employment and proprietary rights agreements in favor of the Company,
and shall be satisfied in its sole discretion with the results of such
investigation and review.

         7.05 Business Plan. The Company, KFx and the Purchaser shall have
prepared and each shall have approved (a) a strategic working program and
business plan of the Company (which, among other things, shall set forth a
conceptual framework for the goals and objectives of the Company's development
of NeuSIGHT) (the "INITIAL WORK PROGRAM"), (b) a supplement to the Initial Work
Program (consistent with the supplements contemplated by clause (B) of Section
2.03(b)(ii)) for the funding associated with the purchase of the Closing Date
Preferred Shares or any Additional Preferred Shares (the "SUPPLEMENTAL WORK
PROGRAM"), and (c) a draft of the operating budget of the Company for 2000 and
2001.

         7.06 Consents, Permits, Waivers and Approvals. Any Consents required
for the transactions contemplated hereunder under any Company Contracts shall
have been obtained.

         7.07 Reservation of Conversion Shares. The Company shall have duly
authorized and reserved sufficient shares of Common Stock for issuance of the
Conversion Shares.

         7.08 All Proceedings to be Satisfactory. All corporate and other
proceedings to be taken by the Company and KFx in connection with the
transactions contemplated hereby and all documents incident thereto shall be
satisfactory in form and substance to the Purchaser and its counsel, and the
Purchaser and its counsel shall have received all such counterpart originals or
certified or other copies of such documents as they reasonably may request.

         7.09 Corporate Documents. The Purchaser and its counsel shall have
received copies of the following documents:

                  (a)(i)the Articles of Incorporation of the Company, certified
as of a recent date by the Secretary of State of their state of incorporation,
and (ii) a certificate of said Secretary dated as of a recent date as to the due
incorporation and good standing of the Company.

                  (b) a certificate of the Secretary or an Assistant Secretary
of the Company, dated the Closing Date and certifying: (i) that attached thereto
is a true and complete copy of the Bylaws of the Company, as in effect on the
date of such certification; (ii) that attached thereto is a true and complete
copy of all resolutions adopted by the Board of Directors of the Company,
authorizing the execution, delivery and performance of this Agreement, and the
Transaction Agreement, to the extent they are a party to such agreements, and
the relevant sale and delivery contemplated hereby, and that all such
resolutions are in full force and effect and are all the resolutions adopted

                                       41
<PAGE>   46

in connection with the transactions contemplated by this Agreement, and the
Stockholder Agreement; (iii) that the Articles of Incorporation of the Company,
have not been amended since the date of the last amendment referred to in the
certificate delivered pursuant to clause (b)(ii) above; and (iv) to the
incumbency and specimen signature of each officer of the Company, executing this
Agreement, the Transaction Agreement, and any certificate or instrument
furnished pursuant hereto, and a certification by another officer of the
Company, as to the incumbency and signature of the officer signing the
certificate referred to in this clause (b); and

                  (c) such additional supporting documents and other information
with respect to the operations and affairs of the Company as the Purchaser or
its counsel reasonably may request.

         7.10 Formation of Marketing Entity. The parties shall have mutually
agreed upon Articles of Organization and an Operating Agreement for Net Power
Solutions, LLC (the "MARKETING ENTITY"), a newly formed Colorado limited
liability company to be owned 50% by the Purchaser and 50% by the Company, and
the Articles of Organization shall have been filed with the Secretary of State
of the State of Colorado.

         7.11 Election of Directors. The number of directors constituting the
entire Board of Directors of the Company shall have been fixed at five (5) and
the Purchaser's designee shall have been elected as a director and shall hold
such position as of the Closing Date.

         7.12 Release of Lien. KFx shall have released any and all liens held by
it or for its benefit on any Proprietary Asset owned or used by the Company.

         7.13 Conversion of Debt. The balance of the KFx Debt as of December 31,
1999 shall have been converted into 3,396,377 shares of Series A Preferred Stock
of the Company.

         7.14 Compliance Certificate. The Company and KFx each shall have
delivered to the Purchaser a certificate, executed by the Presidents of KFx and
the Company, respectively, dated as of the Closing Date certifying that (a) the
conditions of Section 7.01 have been satisfied in all respects and (b) each of
the conditions set forth in this Article 7 has been satisfied in all material
respects

         7.15 Delivery of Legal Opinion. The Purchaser shall have received (i)
the legal opinion of Bangs, McCullen, Butler, Foye & Simmons, L.L.P., counsel to
the Company, and (ii) the legal opinion of Morrison & Foerster LLP, counsel to
KFx, each in form reasonably acceptable to the Purchaser.

         7.16 Affiliated Assets. The Affiliated Assets shall either (a) be
assigned to the Company or (b) the Company shall obtain rights from the
applicable Affiliate sufficient to allow the Company to enjoy full use the
Affiliated Assets for the conduct of its

                                       42
<PAGE>   47

business and the provision of its services, which rights shall be satisfactory
to the Purchaser in its sole discretion

8.       CONDITIONS PRECEDENT TO THE OBLIGATIONS OF THE COMPANY AND KFx

         The obligation of the Company and KFx to consummate the transactions
contemplated hereby shall be subject to the satisfaction (or waiver by each the
Company and KFx) of the following conditions as of the Closing Date:

         8.01 Representations and Warranties. The representations and warranties
of the Purchaser contained in this Agreement shall be (i) in the case of
representations and warranties qualified by materiality or material adverse
effect or the like, true and correct on and as of the Closing Date, and (ii) in
the case of representations and warranties not qualified by materiality or
material adverse effect or the like, true and correct in all material respect as
of the Closing Date.

         8.02 Execution of Agreements. Concurrent with the Closing, (a) the
Company, the Purchaser and the existing stockholders of the Company shall have
executed and delivered the Stockholders Agreement; (b) the Purchaser, the
Company and Net Power Solutions, LLC shall have executed and delivered the
Marketing Services Agreement; and (c) the Purchaser and KFx shall have executed
and delivered the Put Agreement.

         8.03 Certificate of Designation. Prior to or concurrent with the
Closing, the Company shall have filed the Certificate of Designation with the
Secretary of State of the State of South Dakota.

         8.04 Business Plan. The Company, KFx and the Purchaser shall have
prepared and each shall have approved (a) the Initial Work Program, (b) a
supplement to the Initial Work Program (consistent with the supplements
contemplated by clause (B) of Section 2.03(b)(ii)) for the funding associated
with the purchase of the Closing Date Preferred Shares, and (c) an operating
budget for the Company for 2000 and 2001.

         8.05 Consents, Permits, Waivers and Approvals. Any Consents required
for the transactions contemplated hereunder under any Company Contracts shall
have been obtained.

         8.06 Formation of Marketing Entity. The parties shall have mutually
agreed upon Articles of Organization and an Operating Agreement for the
Marketing Entity, and the Articles of Organization shall have been filed with
the Secretary of State of the State of Colorado.

         8.07 Conversion of Debt. The balance of the KFx Debt as of December 31,
1999 shall have been converted into 3,396,377 shares of Series A Preferred Stock
of the Company.

         8.08 Compliance Certificate. The Purchaser shall have delivered to the
Company and KFx a certificate, executed by the President or a Vice President of
the

                                       43
<PAGE>   48

Purchaser, dated as of the Closing Date certifying that the conditions of
Section 8.01 have been satisfied in all respects.

9.       INDEMNIFICATION, ETC.

         9.01 Survival of Representations and Covenants.

                  (a) To the extent provided in this Section 9.01(a), the
representations, warranties, covenants and obligations of each party shall
survive the Closing, any subsequent sale or other disposition of any or all of
the Preferred Shares or the Common Shares and any subsequent Acquisition
Transaction effected by or otherwise involving the Purchaser, KFx or the
Company, but only for the purpose of being true and correct in all material
respects as of the Closing (other than those covenants which by their specific
terms require performance after the Closing). Any representation the Breach of
which the Company or KFx had Knowledge on or prior to the Closing and any
covenants or obligations to be performed after the Closing shall survive and
continue for the applicable statute of limitation period or periods legally
applicable to them. All of the other representations, warranties (as well as the
covenants and obligations to be performed prior to the Closing Date) of the
parties shall terminate, and be deemed to have been satisfied and discharged in
full, on the second anniversary of the Closing Date.

                  (b) The representations, warranties, covenants and obligations
of the respective parties, and the rights and remedies that may be exercised by
any of them, shall not be limited or otherwise affected by or as a result of (i)
anything contained in the Certificate of Designation or (ii) any information
furnished to, or any investigation made by or Knowledge of, any of the parties
or any of their Representatives.

                  (c) For purposes of this Agreement, each statement or other
item of information set forth in the Disclosure Schedule shall be deemed to be a
representation and warranty made by the Company and KFx in this Agreement.

         9.02 Indemnification by the Company and KFx.

                  (a) The Company and KFx shall, jointly and severally (except
for Damages attributable to the matter addressed in clause (v) of this Section
9.02(a) and, to the extent attributable thereto, any Damages under clause (vi),
which Damages shall solely be the liability of KFx), indemnify, defend and hold
harmless the Purchaser and each of its officers, directors, employees, agents
and Representatives (collectively, the "INDEMNITEES" and individually each an
"INDEMNITEE") from and against, and shall compensate and reimburse each of the
Indemnitees for, any Damages which are suffered or incurred by any of the
Indemnitees or to which any of the Indemnitees may otherwise become subject at
any time (regardless of whether or not such Damages relate to any third party
claim) and which arise from or as a direct or indirect result of, or are
directly or indirectly connected with:

                                       44
<PAGE>   49

                           (i) any Breach of any representation or warranty made
         by the Company or KFx in this Agreement;

                           (ii) any Breach of any covenant or obligation of the
         Company or KFx;

                           (iii)                          *             any
         Liabilities relating to the Company's failure to be qualified to do
         business in Ohio;

                           (iv) any Liability to which the Company may become
         subject that directly or indirectly arises from the acts or omissions
         of KFx;

                           (v)                            *                 ; or

                           (vi) any Proceeding relating to any Breach, or
         Liability or matter of the type referred to in any of the clauses
         listed above (including any Proceeding commenced by any Indemnitee for
         the purpose of enforcing any of its rights under this Article 9).

                  (b) Notwithstanding the other provisions of this Article 9, in
no event shall the Company be required to indemnify the Purchaser for Damages
until the aggregate amount of such Damages sustained by the Purchaser exceeds
$50,000, and then only to the extent of such excess; provided, however, that the
provisions of this Section 9.02(b) shall not apply to any Damages arising from
or attributable to the litigation referred to in clause (v) of Section 9.02(a)

                  (c) In no event shall the Company or KFx be subject to any
Liability to the Purchaser under this Article 9 in an aggregate amount exceeding
the purchase price paid by the Purchaser for the Common Shares and the Preferred
Shares actually purchased by the Purchaser.

                  (d) In connection with         *       , the Company and KFx
acknowledge and agree that Purchaser shall be entitled to indemnification
hereunder in connection with any Special Damages resulting from         *
       . As used herein, "Special Damages" shall include consequential damages,
decline in value of the Company and lost opportunity to the Company resulting
from or arising in connection with        *         and the resolution thereof
such that the value of the Purchaser's investment in the Company is demonstrably
diminished from what the value of the Company would have been without the
Special Damages to the Company.

         9.03 No Contribution. KFx waives, and acknowledges and agrees that it
shall not have and shall not exercise or assert or attempt to exercise or
assert, any right of contribution or right of indemnity or any other right or
remedy against the Company in connection with any indemnification obligation
under this Agreement.

* Language omitted and filed separately with the Securities and Exchange
  Commission pursuant to a confidential treatment request.

                                       45
<PAGE>   50

10.      MISCELLANEOUS

         10.01 Governing Law.

                  (a) This Agreement shall be governed in all respects by the
laws of the State of Colorado as such laws are applied to agreements between
Colorado residents entered into and performed entirely in Colorado, except that,
in the case of KFx, the General Corporation Law of the State of Delaware and, in
the case of the Company, the Business Corporation Act of the State of South
Dakota shall govern as to matters of corporate law.

                  (b) Any legal action or other legal proceeding relating to
this Agreement or the enforcement of any provision of this Agreement may be
brought or otherwise commenced in any state or federal court located in the City
and County of Denver, Colorado. Each party to this Agreement:

                           (i) expressly and irrevocably consents and submits to
         the jurisdiction of each state and federal court located in the County
         of Denver, Colorado (and each appellate court located in the State of
         Colorado) in connection with any such legal proceeding, including to
         enforce any settlement, order or award;

                           (ii) agrees that each state and federal court located
         in the City and County of Denver, Colorado shall be deemed to be a
         convenient forum; and

                           (iii) waives and agrees not to assert (by way of
         motion, as a defense or otherwise), in any such legal proceeding
         commenced in any state or federal court located in the City and County
         of Denver, Colorado, any claim that such party is not subject
         personally to the jurisdiction of such court, that such legal
         proceeding has been brought in an inconvenient forum, that the venue of
         such proceeding is improper or that this Agreement or the subject
         matter of this Agreement may not be enforced in or by such court.

                  (c) Each party hereto agrees to the entry of an order to
enforce any resolution, settlement, order or award made pursuant to this Section
by the state and federal courts located in the County of Denver, Colorado and in
connection therewith hereby waives, and agrees not to assert by way of motion,
as a defense, or otherwise, any claim that such resolution, settlement, order or
award is inconsistent with or violative of the laws or public policy of the laws
of the State of Colorado or any other jurisdiction.

                  (d) Each party to this Agreement hereby knowingly,
voluntarily, and intentionally waives the right to a trial by jury in respect of
any litigation arising out of, under or in connection with this Agreement, this
waiver being a material inducement for each such party to enter into this
Agreement.

         10.02 Survival. Subject to Section 9.01, the representations,
warranties, covenants and agreements made herein shall survive any investigation
made by the

                                       46
<PAGE>   51

Purchaser and the closing of the transactions contemplated hereby. All
statements as to factual matters contained in any certificate or other
instrument delivered by or on behalf of the Company pursuant hereto in
connection with the transactions contemplated hereby shall be deemed to be
representations and warranties by the Company and KFx hereunder solely as of the
date of such certificate or instrument.

         10.03 Successors and Assigns. Except as otherwise expressly provided
herein, the provisions hereof shall inure to the benefit of, and be binding
upon, the successors, assigns, heirs, executors and administrators of the
parties hereto and shall inure to the benefit of and be enforceable by each
Person who shall be a holder of the Preferred Shares or the Common Shares from
time to time.

         10.04 Entire Agreement. This Agreement, the Exhibits, the Schedules and
the other documents expressly delivered pursuant hereto, including the
Stockholders Agreement, supersede any other agreement, whether written or oral,
that may have been made or entered into by the parties hereto relating to the
matters contemplated hereby and constitute the full and entire understanding and
agreement between the parties with regard to the subjects hereof, and no party
shall be liable or bound to any other in any manner by any representations,
warranties, covenants and agreements except as specifically set forth herein and
therein.

         10.05 Specific Enforcement. The Purchaser shall be entitled to specific
enforcement of its rights under this Agreement. The Company and KFx acknowledge
that money damages would be an inadequate remedy for its Breach of this
Agreement and Consent to an action for specific performance or other injunctive
relief in the event of any such Breach.

         10.06 Severability. In case any provision of this Agreement shall be
invalid, illegal or unenforceable, the validity, legality and enforceability of
the remaining provisions shall not in any way be affected or impaired thereby.

         10.07 Amendment. This Agreement may be amended or modified only upon
the mutual written Consent of the Company, KFx and the Purchaser.

         10.08 Waiver. A provision of this Agreement may be waived only by a
written instrument executed by or on behalf of the party waiving compliance. The
failure of any party at any time or times to require performance of any
provision hereof shall in no manner affect the right at a later time to enforce
the same. No waiver by any party of any condition, or of any breach of any term,
covenant, representation or warranty contained in this Agreement, in any one or
more instances, shall be construed to be a waiver of any other condition or of
any other breach of the same or any other term, covenant, representation or
warranty.

         10.09 Notices. All notices required or permitted hereunder shall be in
writing and shall be deemed effectively given: (a) upon personal delivery to the
party to be notified; (b) when sent by confirmed telex or facsimile if sent
during normal business

                                       48
<PAGE>   52

hours of the recipient, if not, then on the next business day; (c) five days
after having been sent by registered or certified mail, return receipt
requested, postage prepaid; or (d) two days after deposit with a nationally
recognized overnight courier, specifying next day delivery, with written
verification of receipt. All communications shall be sent to the parties hereto
at the respective addresses set forth below, or as notified by such party from
time to time at least 10 days prior to the effectiveness of such notice:

<TABLE>

<S>                                      <C>
if to the Company:                       Pegasus Technologies, Inc.
                                         5970 Heisley Road, Suite 300
                                         Mentor, Ohio  44060
                                         Attention: Chairman
                                         Facsimile: (440) 357-1119

with a copy to:                          Morrison & Foerster LLP
                                         5200 Republic Plaza
                                         370 17th Street
                                         Denver, Colorado  80202
                                         Attention: Warren L. Troupe
                                         Facsimile: (303) 592-1510

and with a copy to:                      Bangs, McCullen, Butler, Foye & Simmons, L.L.P.
                                         818 St. Joseph Street
                                         P.O. Box 2670
                                         Rapid City, SD  57709
                                         Attention: John H. Raforth
                                         Facsimile: (605) 343-1503

if to KFx:                               KFx Inc.
                                         1999 Broadway, Suite 3200
                                         Denver, Colorado  80202
                                         Attention:  Chairman
                                         Facsimile: (303) 293-8430

with a copy to:                          Morrison & Foerster LLP
                                         5200 Republic Plaza
                                         370 17th Street
                                         Denver, Colorado  80202
                                         Attention: Warren L. Troupe
                                         Facsimile: (303) 592-1510
</TABLE>

                                       48
<PAGE>   53
<TABLE>

<S>                                      <C>
if to the Purchaser:                     Kennecott Energy Company
                                         505 South Gillette
                                         P.O. Box 3009
                                         Gillette, Wyoming  82717-3009
                                         Attention: Patricia Britton
                                         Facsimile: (307) 687-6059

with a copy to:                          Davis, Graham & Stubbs LLP
                                         370 17th Street, Suite 4700
                                         Denver, Colorado  80202
                                         Attention: Christopher L. Richardson
                                         Facsimile: (303) 893-1379
</TABLE>

         10.10 Counterparts; Facsimile. This Agreement may be executed in any
number of counterparts, each of which shall be an original, but all of which
together shall constitute one instrument. This Agreement (or any counterpart
hereof) may be delivered by a party by facsimile, which facsimile delivery shall
be effective as if the original counterpart had been delivered.

         10.11 Future Financings. Nothing contained in this Agreement or the
Purchaser's prior dealings with KFx or the Company shall be deemed to constitute
a commitment on the part of the Purchaser to purchase all of the Additional
Preferred Shares or to participate in any future financings by the Company.

         10.12 Press Releases and Announcements. All press releases and
announcements concerning the transactions contemplated by this Agreement and the
other Transaction Agreements shall be mutually agreed to by the Company, KFx and
the Purchaser, except for any such disclosure required by law which, in the case
of such disclosure by the Company, shall, to the extent practicable under the
circumstances, be first discussed with the Purchaser and, in the case of such
disclosure by the Purchaser, shall, to the extent practicable under the
circumstances, be first discussed with the Company and KFx.

         10.13 Expenses. Each party hereto will pay its own expenses incurred in
connection with the transactions contemplated hereby, whether or not such
transactions shall be consummated.

         10.14 Interpretation.

                  (a) The various section headings are inserted for purposes of
reference only and shall not affect the meaning or interpretation of this
Agreement or any provision hereof.

                  (b) Each party hereto acknowledges that it has been
represented by competent counsel and participated in the drafting of this
Agreement and the other Transaction Agreements, and agrees that any applicable
rule of construction to the effect

                                       49
<PAGE>   54

that ambiguities are to be resolved against the drafting party shall not be
applied in connection with the construction or interpretation of this Agreement
and the other Transaction Agreements.

                  (c) In this Agreement, unless a clear contrary intention
appears:

                           (i) the singular number includes the plural number
         and vice versa;

                           (ii) reference to any Person includes such Person's
         successors and assigns, but only if such successors and assigns are not
         prohibited by this Agreement;

                           (iii) reference to any gender includes the other
         gender and the neuter;

                           (iv) reference to any agreement (including this
         Agreement), document or instrument means such agreement, document or
         instrument as amended or modified and in effect from time to time in
         accordance with the terms thereof and reference to any promissory note
         includes any promissory note which is an extension or renewal thereof
         or a substitute or replacement therefor;

                           (v) reference to any Law means such Law as amended,
         modified, codified, replaced or reenacted, in whole or in part, and in
         effect from time to time, including rules and regulations promulgated
         thereunder and reference to any section or other provision of any Law
         means that provision of such Law from time to time in effect and
         constituting the substantive amendment, modification, codification,
         replacement or reenactment of such section or other provision;

                           (vi) "hereunder," "hereof," "hereto" and words of
         similar import shall be deemed references to this Agreement as a whole
         and not to any particular Article, Section or other provision thereof;

                           (vii) the words "include," "includes" and "including"
         shall be deemed to be followed by the phrase "without limitation";

                           (viii) the exhibits and attachments to the Disclosure
         Schedule form an integral part of the Disclosure Schedule and are
         incorporated by reference for all purposes as if set forth fully
         therein;

                           (ix) all references (other than references to
         Sections of the Code or any other statute) and subsections shall be
         deemed to be references to Articles, Sections and subsections of this
         Agreement unless the context shall otherwise require. References in
         this Agreement to any Article shall include all Sections, subsections
         and paragraphs in such Article, references in this Agreement to any
         Section shall include all subsections and paragraphs in such Section;
         and references in this Agreement to any subsection shall include all
         paragraphs in such subsection.

         10.15 No Third Party Beneficiaries. This Agreement is intended for the
benefit of the parties hereto and their respective permitted successors and
assigns and are not for the benefit of, nor may any provision hereof be enforced
by, any other Person.

                                     * * * *

                                       50
<PAGE>   55

         IN WITNESS WHEREOF, the parties hereto have executed this Agreement as
of the date set forth in the first paragraph hereof.

                                    COMPANY:

                                    PEGASUS TECHNOLOGIES, INC.

                                    By: /s/ Seth L. Patterson
                                       ----------------------------------
                                    Name: Seth L. Patterson
                                         --------------------------------
                                    Title: V.P. - Finance & C.F.O.
                                          -------------------------------

                                    KFx:

                                    KFx INC.

                                    By: /s/ Seth L. Patterson
                                       ----------------------------------
                                    Name: Seth L. Patterson
                                         --------------------------------
                                    Title: E.V.P & C.F.O.
                                          -------------------------------

                                    PURCHASER:

                                    KENNECOTT ENERGY COMPANY

                                    By: /s/ Kent W. Goates
                                       ----------------------------------
                                    Name: Kent W. Goates
                                         --------------------------------
                                    Title: Vice President & C.F.O.
                                          -------------------------------

                                       51

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