Document:

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                                                                    EXHIBIT 10.6

                                ENERNETICS, INC.

                       RESTRICTED STOCK PURCHASE AGREEMENT

     THIS AGREEMENT is made this 8th day of January, 1998, between EnerNetics,
Inc., a California corporation (the "Company"), and Dale M. Fong (the
"Purchaser").

     WHEREAS in order to give the Purchaser an opportunity to acquire an equity
interest in the Company as an incentive for the Purchaser to continue as an
employee of the Company, the Company is willing to sell to the Purchaser and the
Purchaser desires to purchase shares of Common Stock according to the terms and
conditions contained herein.

     THEREFORE, the parties agree as follows:

     1.   Sale of Stock. The Company hereby agrees to sell to the Purchaser and
the Purchaser hereby agrees to purchase an aggregate of 1,666,667 shares of the
Company's Common Stock (the "Shares"), at the price of $ 0.003 per share for an
aggregate purchase price of $5,000.00.

     2.   Payment of Purchase Price. The purchase price for the Shares shall be
paid by the delivery to the Company at the time of execution of this Agreement
of a check payable to the Company and the assignment to the Company of the
property described on Exhibit A, having a combined value of $5,000.00.

     3.   Repurchase Option.

          (a)  In the event of any voluntary or involuntary termination of the
Purchaser's employment by or services to the Company for any or no reason
(including death or disability) before all of the Shares are released from the
Company's repurchase option (see Section 4), the Company shall, upon the date of
such termination (as reasonably fixed and determined by the Company) have an
irrevocable, exclusive option for a period of ninety (90) days from such date to
repurchase all (but not less than all) of the Unreleased Shares (as defined in
Section 4) at such time at $ 0.003 per share (the "Repurchase Price"). Said
option shall be exercised by the Company by written notice to the Purchaser or
the Purchaser's executor (with a copy to the Escrow Holder) and, at the
Company's option, (i) by delivery to the Purchaser or the Purchaser's executor
with such notice of a check in the amount of the Repurchase Price for the Shares
being repurchased, or (ii) by cancellation by the Company of an amount of the
Purchaser's indebtedness to the Company equal to the Repurchase Price for the
Shares being repurchased, or (iii) by a combination of (i) and (ii) so that the
combined payment and cancellation of indebtedness equals such Repurchase Price.
Upon delivery of such notice and the payment of the Repurchase Price in any of
the ways described above, the Company shall become the legal and beneficial
owner of the Shares being repurchased and all rights and interests therein or
relating thereto, and the Company shall have the right to retain and transfer to
its own name the number of Shares being repurchased by the Company.

          (b)  Whenever the Company shall have the right to repurchase Shares
hereunder, the Company may designate and assign one or more employees, officers,
directors or shareholders of

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the Company or other persons or organizations to exercise all or a part of the
Company's purchase rights under this Agreement and purchase all or a part of
such Shares; provided that if the fair market value of the Shares to be
repurchased on the date of such designation or assignment (the "Repurchase FMV")
exceeds the Repurchase Price of the Shares to be repurchased, then each such
designee or assignee shall pay the Company cash equal to the difference between
the Repurchase FMV and the Repurchase Price of the Shares which such designee or
assignee shall have the right to repurchase.

     4.   Release of Shares From Repurchase Option.

          (a)  One thirty-sixth (1/36) of the Shares shall be released from the
Company's repurchase option on January 31, 1998, and one thirty-sixth (1/36) of
the Shares shall be released from the Company's repurchase option on the last
day of each full calendar month thereafter, provided in each case that the
Purchaser's employment by or services to the Company have not been terminated
prior to the date of any such release.

          (b)  Any of the Shares which have not yet been released from the
Company's repurchase option are referred to herein as "Unreleased Shares."

          (c)  The Shares which have been released from the Company's repurchase
option shall be delivered to the Purchaser at the Purchaser's request (see
Section 6).

          (d)  Notwithstanding anything set forth in this Section 4, all of the
Shares shall be released from the Company's repurchase option described in
Section 3 above upon the firmly underwritten initial public offering of the
Company's Common Stock, the merger or reorganization of the Company with or into
another corporation, entity or person or the sale of all of or substantially all
of the Company's assets to another corporation, entity or person, provided that
no release of Shares from the Company's repurchase option shall occur pursuant
to this Section 4(d) if immediately after such merger, reorganization or sale of
assets, at least 51% of the capital stock or equity interests in such other
corporation, entity or person are owned by persons who owned in the aggregate at
least 51% of the capital stock of the Company immediately before such merger,
reorganization or sale of assets.

     5.   Restriction on Transfer. Except for the escrow described in Section 6
or transfer of the Shares to the Company or its assignees contemplated by this
Agreement, none of the Shares or any beneficial interest therein shall be
transferred, encumbered or otherwise disposed of in any way until the release of
such Shares from the Company's repurchase option in accordance with the
provisions of this Agreement, other than by will or the laws of descent and
distribution.

     6.   Escrow of Shares.

          (a)  The Shares issued under this Agreement shall be held by an escrow
holder designated by the Company (the "Escrow Holder"), along with a stock
assignment executed by the Purchaser in blank, until the expiration of the
Company's option to repurchase such Shares as set forth above.

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          (b)  The Escrow Holder is hereby directed to permit transfer of the
Shares only in accordance with this Agreement or instructions signed by both
parties. In the event further instructions are desired by the Escrow Holder, the
Escrow Holder shall be entitled to rely upon directions executed by a majority
of the authorized number of the Company's Board of Directors. The Escrow Holder
shall have no liability for any act or omission hereunder while acting in good
faith in the exercise of the Escrow Holder's own judgment.

          (c)  If the Company or any assignee exercises its repurchase option
hereunder, the Escrow Holder, upon receipt of written notice of such option
exercise from the proposed transferee, shall take all steps necessary to
accomplish such transfer.

          (d)  When the repurchase option has been exercised or expires
unexercised or a portion of the Shares has been released from such repurchase
option, upon Purchaser's request the Escrow Holder shall promptly cause a new
certificate to be issued for such released Shares and shall deliver such
certificate to the Purchaser.

          (e)  Subject to the terms hereof, the Purchaser shall have all the
rights of a shareholder with respect to such Shares while they are held in
escrow, including without limitation, the right to vote the Shares and receive
any cash dividends declared thereon. If, from time to time during the term of
the Company's repurchase option, there is (i) any stock dividend, stock split or
other change in the Shares, or (ii) any merger or sale of all or substantially
all of the assets or other acquisition of the Company, any and all new,
substituted or additional securities to which the Purchaser is entitled by
reason of the Purchaser's ownership of the Shares shall be immediately subject
to this escrow, deposited with the Escrow Holder and included thereafter as
"Shares" for purposes of this Agreement and the Company's repurchase option.

     7.   Investment Representations; Restrictions on Transfer.

          (a)  In connection with the purchase of the Shares, the Purchaser
represents to the Company the following:

               (i)  The Purchaser is aware of the Company's business affairs and
financial condition and has acquired sufficient information about the Company to
reach an informed and knowledgeable decision to acquire the Shares. The
Purchaser is purchasing these Shares for investment for the Purchaser's own
account only and not with a view to, or for resale in connection with, any
"distribution" thereof within the meaning of the Securities Act of 1933, as
amended (the "Securities Act").

               (ii) The Purchaser acknowledges and understands that the Shares
constitute "restricted securities" under the Securities Act and must be held
indefinitely unless they are subsequently registered under the Securities Act or
an exemption from such registration is available. The Purchaser further
acknowledges and understands that the Company is under no obligation to register
the Shares. The Purchaser understands that the certificate evidencing the Shares
will be imprinted with a legend which prohibits the transfer of the Shares
unless they are registered or such registration is not required in the opinion
of counsel satisfactory to the Company.

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               (iii) The Purchaser is familiar with the provisions of Rule 701
and Rule 144, each promulgated under the Securities Act, which, in substance,
permit limited public resale of "restricted securities" acquired, directly or
indirectly, from the issuer thereof, in a non-public offering subject to the
satisfaction of certain conditions. Rule 701 provides that if the issuer
qualifies under Rule 701 at the time of issuance of the securities to the
Purchaser, such issuance will be exempt from registration under the Securities
Act. In the event the Company later becomes subject to the reporting
requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934,
ninety (90) days thereafter the securities exempt under Rule 701 may be resold,
subject to the satisfaction of certain of the conditions specified by Rule 144,
including among other things: (1) the sale being made through a broker in 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); and,
in the case of an affiliate, (2) the availability of certain public information
about the Company, and the amount of securities being sold during any three
month period not exceeding the limitations specified in Rule 144(e), if
applicable. Notwithstanding this paragraph 7(a)(iii), the Purchaser acknowledges
and agrees to the restrictions set forth in paragraph 7(b).

     In the event that the Company does not qualify under Rule 701 at the time
of issuance of the securities to the Purchaser, then the securities may be
resold in certain limited circumstances subject to the provisions of Rule 144,
which requires among other things: (1) the availability of certain public
information about the Company: (2) the resale occurring not less than one year
after the party has purchased, and made full payment for, within the meaning of
Rule 144, the securities to be sold; and (3) in the case of an affiliate, or of
a non-affiliate who has held the securities less than two years, the sale being
made through a broker in 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) and the amount of securities being sold during
any three month period not exceeding the specified limitations stated therein,
if applicable.

          (b)  The Purchaser agrees, in connection with the Company's initial
underwritten public offering of the Company's securities, (1) not to sell, make
short sale of, loan, grant any options for the purchase of, or otherwise dispose
of any shares of Common Stock of the Company held by the Purchaser (other than
those shares included in the registration) without the prior written consent of
the Company or the underwriters managing such initial underwritten public
offering of the Company's securities for one hundred eighty (180) days from the
effective date of such registration, (2) further agrees to execute any agreement
reflecting (1) above as may be requested by the underwriters at the time of the
public offering and (3) further agrees that the Company may impose stop transfer
instructions in order to enforce the foregoing covenants.

     8.   Legends. The share certificate evidencing the Shares issued hereunder
shall be endorsed with the following legends (in addition to any legend required
under applicable state securities laws):

          (a)  THE SHARES REPRESENTED BY THIS CERTIFICATE HAVE BEEN ACQUIRED FOR
INVESTMENT AND NOT WITH A VIEW TO, OR IN CONNECTION WITH, THE SALE OR
DISTRIBUTION THEREOF. NO SUCH SALE OR DISPOSITION MAY BE EFFECTED WITHOUT AN
EFFECTIVE REGISTRATION STATEMENT RELATED THERETO

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OR AN OPINION OF COUNSEL SATISFACTORY TO THE COMPANY THAT SUCH REGISTRATION IS
NOT REQUIRED UNDER THE SECURITIES ACT OF 1933.

          (b)  THE SHARES REPRESENTED BY THIS CERTIFICATE MAY BE TRANSFERRED
ONLY IN ACCORDANCE WITH THE TERMS OF AN AGREEMENT BETWEEN THE COMPANY AND THE
SHAREHOLDER, A COPY OF WHICH IS ON FILE WITH THE SECRETARY OF THE COMPANY.

     9.   Adjustment for Stock Split. All references to the number of Shares and
the purchase price of the Shares in this Agreement shall be appropriately
adjusted to reflect any stock split, stock dividend or other change in the
Shares which may be made by the Company after the date of this Agreement.

     10.  Tax Consequences. The Purchaser has reviewed with the Purchaser's own
tax advisors the federal, state, local and foreign tax consequences of this
investment and the transactions contemplated by this Agreement. The Purchaser is
relying solely on such advisors and not on any statements or representations of
the Company or any of its agents. The Purchaser understands that the Purchaser
(and not the Company) shall be responsible for the Purchaser's own tax liability
that may arise as a result of this investment or the transactions contemplated
by this Agreement. The Purchaser understands that Section 83 of the Internal
Revenue Code of 1986, (the "Code"), taxes as ordinary income both (i) the
difference between the fair market value of the Shares when the Company granted
the Purchaser the right to purchase the Shares and the fair market value of the
Shares on the date of this Agreement and (ii) the difference between the amount
paid for the Shares and the fair market value of the Shares as of the date any
restrictions on the Shares lapse. In this context, "restriction" includes the
right of the Company to buy back the Shares pursuant to its repurchase option.
In the event the Company has registered under the Exchange Act, "restriction"
with respect to officers, directors and 10% shareholders also means the period
after the purchase of the Shares during which such officers, directors and 10%
shareholders could be subject to suit under Section 16(b) of the Exchange Act.
The Purchaser understands that the Purchaser may elect to be taxed at the time
the Shares are purchased rather than when and as the Company's repurchase option
or 16(b) period expires by filing an election under Section 83(b) of the Code
with the I.R.S. within 30 days from the date of purchase.

     THE PURCHASER ACKNOWLEDGES THAT IT IS THE PURCHASER'S SOLE RESPONSIBILITY
AND NOT THE COMPANY'S TO FILE TIMELY THE ELECTION UNDER SECTION 83(b), EVEN IF
THE PURCHASER REQUESTS THE COMPANY OR ITS REPRESENTATIVES TO MAKE THIS FILING ON
THE PURCHASER'S BEHALF.

     11.  General Provisions.

          (a)  This Agreement shall be governed by the laws of the State of
California. This Agreement represents the entire agreement between the parties
with respect to the purchase of Common Stock by the Purchaser and may only be
modified or amended in writing signed by both parties.

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          (b)  Any notice, demand or request required or permitted to be given
by either the Company or the Purchaser pursuant to the terms of this Agreement
shall be in writing and shall be deemed given when delivered personally or
deposited in the U.S. mail, First Class with postage prepaid, and addressed to
the parties at the addresses of the parties set forth at the end of this
Agreement or such other address as a party may request by notifying the other in
writing.

     Any notice to the Escrow Holder shall be sent to the Company's address with
a copy to the other party not sending the notice.

          (c)  The rights and benefits of the Company under this Agreement shall
be transferable to any one or more persons or entities, and all covenants and
agreements hereunder shall inure to the benefit of, and be enforceable by the
Company's successors and assigns. The rights and obligations of the Purchaser
under this Agreement may only be assigned with the prior written consent of the
Company.

          (d)  Either party's failure to enforce any provision or provisions of
this Agreement shall not in any way be construed as a waiver of any such
provision or provisions, nor prevent that party thereafter from enforcing each
and every other provision of this Agreement. The rights granted both parties
herein are cumulative and shall not constitute a waiver of either party's right
to assert all other legal remedies available to it under the circumstances.

          (e)  The Purchaser agrees upon request to execute any further
documents or instruments necessary or desirable to carry out the purposes or
intent of this Agreement.

          (f)  PURCHASER ACKNOWLEDGES AND AGREES THAT THE VESTING OF SHARES
PURSUANT TO SECTION 4 HEREOF IS EARNED ONLY BY CONTINUING SERVICE AS AN EMPLOYEE
OR CONSULTANT AT THE WILL OF THE COMPANY (NOT THROUGH THE ACT OF BEING HIRED OR
PURCHASING SHARES HEREUNDER). PURCHASER FURTHER ACKNOWLEDGES AND AGREES THAT
THIS AGREEMENT, THE TRANSACTIONS CONTEMPLATED HEREUNDER AND THE VESTING SCHEDULE
SET FORTH HEREIN DO NOT CONSTITUTE AN EXPRESS OR IMPLIED PROMISE OF CONTINUED
ENGAGEMENT AS AN EMPLOYEE OR CONSULTANT FOR THE VESTING PERIOD, FOR ANY PERIOD,
OR AT ALL, AND SHALL NOT INTERFERE WITH PURCHASER'S RIGHT OR THE COMPANY'S RIGHT
TO TERMINATE PURCHASER'S EMPLOYMENT OR CONSULTING RELATIONSHIP AT ANY TIME, WITH
OR WITHOUT CAUSE.

          (g)  SALE OF THE SECURITIES WHICH ARE THE SUBJECT OF THIS AGREEMENT
HAS NOT BEEN QUALIFIED WITH THE COMMISSIONER OF CORPORATIONS OF THE STATE OF
CALIFORNIA AND THE ISSUANCE OF SUCH SECURITIES OR THE PAYMENT OR RECEIPT OF ANY
PART OF THE CONSIDERATION THEREFOR PRIOR TO SUCH QUALIFICATION IS UNLAWFUL,
UNLESS THE SALE OF SECURITIES IS EXEMPT FROM THE QUALIFICATION BY SECTION 25100,
25102, OR 25105 OF THE CALIFORNIA CORPORATIONS CODE. THE RIGHTS OF ALL PARTIES
TO THIS AGREEMENT ARE EXPRESSLY CONDITIONED UPON SUCH QUALIFICATION BEING
OBTAINED, UNLESS THE SALE IS SO EXEMPT.

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     IN WITNESS WHEREOF, the parties have duly executed this Agreement as of the
day and year first set forth above.

ENERNETICS, INC.                       PURCHASER
a California corporation

By: /s/ John Woolard                   By: /s/ Dale M. Fong
   ---------------------------            ---------------------------
Title: President/CEO                           Dale M. Fong
      ------------------------         ------------------------------

1 Ross Road                            ------------------------------
Alameda, CA  94502                     (Address)

                                       ------------------------------

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                                CONSENT OF SPOUSE

     I, ____________________, spouse of Dale M. Fong, have read and approve the
foregoing Agreement. In consideration of granting of the right to my spouse to
purchase 1,666,667 shares of Common Stock of EnerNetics, Inc., as set forth in
the Agreement, I hereby appoint my spouse as my attorney-in-fact in respect to
the exercise of any rights under the Agreement and agree to be bound by the
provisions of the Agreement insofar as I may have any rights in said Agreement
or any shares issued pursuant thereto under the community property laws of the
State of California or similar laws relating to marital property in effect in
the state of our residence as of the date of the signing of the foregoing
Agreement.

Dated:  January __, 1998

                                       -----------------------------------------
                                       (signature)

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                      ASSIGNMENT SEPARATE FROM CERTIFICATE

     FOR VALUE RECEIVED I, Dale M. Fong, hereby sell, assign and transfer unto
______________________________ (__________) shares of the Common Stock of
EnerNetics, Inc. standing in my name on the books of said corporation
represented by Certificate No. _____ herewith and do hereby irrevocably
constitute and appoint Wilson Sonsini Goodrich & Rosati, attorney, to transfer
the said stock on the books of the within named corporation with full power of
substitution in the premises.

     This Stock Assignment may be used only in accordance with the Stock
Purchase Agreement between EnerNetics, Inc. and the undersigned dated
______________, 19__.

Dated: _______________, 19

                                       /s/ Dale M. Fong
                                       -----------------------------------------
                                       Signature:

INSTRUCTION: Please do not fill in any blanks other than the signature line. The
purpose of this assignment is to enable the Company to exercise its "repurchase
option" set forth in the Agreement without requiring additional signatures on
the part of the Purchaser.

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                          ELECTION UNDER SECTION 83(b)

                      OF THE INTERNAL REVENUE CODE OF 1986

The undersigned taxpayer hereby elects, pursuant to the above-referenced Federal
Tax Code, to include in taxpayer's gross income for the current taxable year,
the amount of any compensation taxable to taxpayer in connection with his
receipt of the property described below:

1.   The name, address, taxpayer identification number and taxable year of the
     undersigned are as follows:

     NAME:                              TAXPAYER:                        SPOUSE:
     ADDRESS:

     IDENTIFICATION NO.:                TAXPAYER:                        SPOUSE:

     TAXABLE YEAR:  1998

2.   The property with respect to which the election is made is described as
     follows: 1,666,667 shares (the "Shares") of the Common Stock of EnerNetics,
     Inc. (the "Company").

3.   The date on which the property was transferred is: January 8, 1998.

4.   The property is subject to the following restrictions:

     The Shares may be repurchased by the Company, or its assignee, on certain
     events. This right lapses with regard to a portion of the Shares over time.

5.   The fair market value at the time of transfer, determined without regard to
     any restriction other than a restriction which by its terms will never
     lapse, of such property is:

     $0.003 per share

6.   The amount (if any) paid for such property is:

     $0.003 per share

The undersigned has submitted a copy of this statement to the person for whom
the services were performed in connection with the undersigned's receipt of the
above-described property. The transferee of such property is the person
performing the services in connection with the transfer of said property.

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The undersigned understands that the foregoing election may not be revoked
except with the consent of the Commissioner.

Dated:                                 Taxpayer: /s/ Dale M. Fong
         -------------------                    --------------------------------
                                                Taxpayer

The undersigned spouse of taxpayer joins in this election.

Dated:                                 Taxpayer:
        --------------------                    --------------------------------
                                                Spouse of Taxpayer

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                                    EXHIBIT A

                        PROPERTY ASSIGNED TO THE COMPANY

   PROPERTY                                                  FAIR MARKET VALUE
--------------------------------------------------------------------------------

                                       12<PAGE>   1

                                                                    EXHIBIT 10.7

SILICON ENERGY CORP.

                          CHANGE OF CONTROL AGREEMENT

        This Change of Control Agreement (the "Agreement") is made and entered
into effective as of October 4, 2000 (the "Effective Date"), by and between
Leonard Berg (the "Employee") and Silicon Energy Corp., a Delaware corporation
(the "Company"). Certain capitalized terms used in this Agreement are defined in
Section 1 below.

                                 R E C I T A L S

        A. It is expected that the Company from time to time will consider the
possibility of a Change of Control. The Board of Directors of the as Company
(the "Board") recognizes that such consideration can be a distraction to the
Employee and can cause the Employee to consider alternative employment
opportunities.

        B. The Board believes that it is in the best interests of the Company
and its shareholders to memorialize by means of this Agreement the offer
letters issued to the Employee and accepted by the Employee December 21, 1998
and March 4, 1999.

                                    AGREEMENT

        In consideration of the mutual covenants herein contained and the
continued employment of Employee by the Company, the parties agree as follows:

        1. Definition of Terms. The following terms referred to in this
Agreement shall have the following meanings:

                (a) Change of Control. "Change of Control" shall mean the
occurrence of any of the following events:

                        (i) the approval by shareholders of the Company of a
merger or consolidation of the Company with any other corporation, other than a
merger or consolidation which would result in the voting securities of the
Company outstanding immediately prior thereto continuing to represent (either by
remaining outstanding or by being converted into voting securities of the
surviving entity) more than fifty percent (50%) of the total voting power
represented by the voting securities of the Company or such surviving entity
outstanding immediately after such merger or consolidation;

                        (ii) the approval by the shareholders of the Company of
a plan of complete liquidation of the Company or an agreement for the sale or
disposition by the Company of all or substantially all of the Company's assets;

                        (iii) any "person" (as such term is used in Sections
13(d) and 14(d) of the Securities Exchange Act of 1934, as amended) becoming the
"beneficial owner" (as defined in Rule 13d-3 under said Act), directly or

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indirectly, of securities of the Company representing 50% or more of the total
voting power represented by the Company's then outstanding voting securities; or

                        (iv) a change in the composition of the Board, as a
result of which fewer than a majority of the directors are Incumbent Directors.
"Incumbent Directors" shall mean directors who either (A) are directors of the
Company as of the date hereof, or (B) are elected, or nominated for election, to
the Board with the affirmative votes of at least a majority of those directors
whose election or nomination was not in connection with any transactions
described in subsections (i), (ii), or (iii) or in connection with an actual or
threatened proxy contest relating to the election of directors of the Company.

        2. Term of Agreement. This Agreement shall terminate upon the date that
all obligations of the parties hereto under this Agreement have been satisfied
or, if earlier, on the date, prior to a Change of Control, Employee is no longer
employed by the Company.

        3. At-Will Employment. The Company and the Employee acknowledge that the
Employee's employment is and shall continue to be at-will, as defined under
applicable law. If the Employee's employment terminates for any reason, the
Employee shall not be entitled to any payments, benefits, damages, awards or
compensation other than as provided by this Agreement, or as may otherwise be
established under the Company's then existing employee benefit plans or policies
at the time of termination.

        4. Change of Control Benefits.

                (a) Change of Control Acceleration. In the event of a Change of
Control, all stock options and stock purchase rights granted by the Company to
the Employee on February 2, 1999 shall immediately become vested.

        5. Successors.

                (a) Company's Successors. Any successor to the Company (whether
direct or indirect and whether by purchase, lease, merger, consolidation,
liquidation or otherwise) to all or substantially all of the Company's business
and/or assets shall assume the Company's obligations under this Agreement and
agree expressly to perform the Company's obligations under this Agreement in the
same manner and to the same extent as the Company would be required to perform
such obligations in the absence of a succession. For all purposes under this
Agreement, the term "Company" shall include any successor to the Company's
business and/or assets which executes and delivers the assumption agreement
described in this subsection (a) or which becomes bound by the terms of this
Agreement by operation of law.

                (b) Employee's Successors. Without the written consent of the
Company, Employee shall not assign or transfer this Agreement or any right or
obligation under this Agreement to any other person or entity. Notwithstanding
the foregoing, the terms of this Agreement and all rights of Employee hereunder
shall inure to the benefit of, and be enforceable by, Employee's personal or
legal representatives, executors, administrators, successors, heirs,
distributees, devisees and legatees.

                                      -2-
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        6. Arbitration.

                (a) Any dispute or controversy arising out of, relating to, or
in connection with this Agreement, or the interpretation, validity,
construction, performance, breach, or termination thereof, shall be settled by
binding arbitration to be held in Alameda County, California, in accordance with
the National Rules for the Resolution of Employment Disputes then in effect of
the American Arbitration Association (the "Rules"). The arbitrator may grant
injunctions or other relief in such dispute or controversy. The decision of the
arbitrator shall be final, conclusive and binding on the parties to the
arbitration. Judgment may be entered on the arbitrator's decision in any court
having jurisdiction.

                (b) The arbitrator(s) shall apply California law to the merits
of any dispute or claim, without reference to conflicts of law rules. The
arbitration proceedings shall be governed by federal arbitration law and by the
Rules, without reference to state arbitration law. Employee hereby consents to
the personal jurisdiction of the state and federal courts located in California
for any action or proceeding arising from or relating to this Agreement or
relating to any arbitration in which the parties are participants.

                (c) Employee understands that nothing in this Section modifies
Employee's at-will employment status. Either Employee or the Company can
terminate the employment relationship at any time, with or without Cause.

                (d) EMPLOYEE HAS READ AND UNDERSTANDS THIS SECTION, WHICH
DISCUSSES ARBITRATION. EMPLOYEE UNDERSTANDS THAT SUBMITTING ANY CLAIMS ARISING
OUT OF, RELATING TO, OR IN CONNECTION WITH THIS AGREEMENT, OR THE
INTERPRETATION, VALIDITY, CONSTRUCTION, PERFORMANCE, BREACH OR TERMINATION
THEREOF TO BINDING ARBITRATION, CONSTITUTES A WAIVER OF EMPLOYEE'S RIGHT TO A
JURY TRIAL AND RELATES TO THE RESOLUTION OF ALL DISPUTES RELATING TO ALL ASPECTS
OF THE EMPLOYER/EMPLOYEE RELATIONSHIP, INCLUDING BUT NOT LIMITED TO, THE
FOLLOWING CLAIMS:

                        (i) ANY AND ALL CLAIMS FOR WRONGFUL DISCHARGE OF
EMPLOYMENT; BREACH OF CONTRACT, BOTH EXPRESS AND IMPLIED; BREACH OF THE COVENANT
OF GOOD FAITH AND FAIR DEALING, BOTH EXPRESS AND IMPLIED; NEGLIGENT OR
INTENTIONAL INFLICTION OF EMOTIONAL DISTRESS; NEGLIGENT OR INTENTIONAL
MISREPRESENTATION; NEGLIGENT OR INTENTIONAL INTERFERENCE WITH CONTRACT OR
PROSPECTIVE ECONOMIC ADVANTAGE; AND DEFAMATION.

                                      -3-
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                        (ii) ANY AND ALL CLAIMS FOR VIOLATION OF ANY FEDERAL
STATE OR MUNICIPAL STATUTE, INCLUDING, BUT NOT LIMITED TO, TITLE VII OF THE
CIVIL RIGHTS ACT OF 1964, THE CIVIL RIGHTS ACT OF 1991, THE AGE DISCRIMINATION
IN EMPLOYMENT ACT OF 1967, THE AMERICANS WITH DISABILITIES ACT OF 1990, THE FAIR
LABOR STANDARDS ACT, THE CALIFORNIA FAIR EMPLOYMENT AND HOUSING ACT, AND LABOR
CODE SECTION 201, et seq;

                        (iii) ANY AND ALL CLAIMS ARISING OUT OF ANY OTHER LAWS
AND REGULATIONS RELATING TO EMPLOYMENT OR EMPLOYMENT DISCRIMINATION.

        8. Miscellaneous Provisions.

                (a) Waiver. No provision of this Agreement may be modified,
waived or discharged unless the modification, waiver or discharge is agreed to
in writing and signed by the Employee and by an authorized officer of the
Company (other than the Employee). No waiver by either party of any breach of,
or of compliance with, any condition or provision of this Agreement by the other
party shall be considered a waiver of any other condition or provision or of the
same condition or provision at another time.

                (b) Integration. This Agreement and any outstanding stock option
agreements and restricted stock purchase agreements referenced herein represent
the entire agreement and understanding between the parties as to the subject
matter herein and supersede all prior or contemporaneous agreements, whether
written or oral, with respect to this Agreement and any stock option agreement
or restricted stock purchase agreement.

                (c) Choice of Law. The validity, interpretation, construction
and performance of this Agreement shall be governed by the internal substantive
laws, but not the conflicts of law rules, of the State of California.

                (d) Severability. The invalidity or unenforceability of any
provision or provisions of this Agreement shall not affect the validity or
enforceability of any other provision hereof, which shall remain in full force
and effect.

                (e) Employment Taxes. All payments made pursuant to this
Agreement shall be subject to withholding of applicable income and employment
taxes.

                (f) Counterparts. This Agreement may be executed in
counterparts, each of which shall be deemed an original, but all of which
together will constitute one and the same instrument.

                                      -4-

<PAGE>   5

IN WITNESS WHEREOF, each of the parties has executed this Agreement, in the case
of the Company by its duly authorized officer, as of the day and year first
above written.

COMPANY:                                    SILICON ENERGY CORP.

                                            By:  /s/ JOHN WOOLARD

                                            Title:  President, Chief Executive
                                                    Officer and Chairman of the
                                                    Board

EMPLOYEE:                                   /s/ LEONARD BERG
                                            ------------------------------------
                                            Signature

                                              Leonard Berg
                                            ------------------------------------
                                            Printed Name

                                      -5-

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