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|   |                                                                   | Page   |
|--------|------------------------------------------------------------------------|--------|
|   |                                                                   |   |
| I.     | ESTABLISHMENT                                                          | 1      |
|   |                                                                   |   |
| II.    | PURPOSE                                                                | 1      |
|   |                                                                   |   |
| III.   | CONSTRUCTION                                                           | 1      |
|   |                                                                   |   |
|   | Section 3.1.  Definitions                                    | 1      |
|   | Section 3.2.  Gender and    Number                           | 5      |
|   | Section 3.3.  Severability                                   | 5      |
|   |                                                                   |   |
| IV.    | ADMINISTRATION                                                         | 6      |
|   |                                                                   |   |
|   | Section 4.1.  The Committee                                  | 6      |
|   | Section 4.2.  Authority of the      Committee                | 6      |
|   | Section 4.3.  Decisions    Binding                           | 6      |
|   | Section 4.4.  Terms of      Participation                    | 6      |
|   |                                                                   |   |
| V.     | ELIGIBILITY      AND PARTICIPATION                                     | 7      |
|   |                                                                   |   |
|   | Section 5.1.  Participation                                  | 7      |
|   | Section 5.2.  No Employment      Guarantee                   | 7      |
|   |                                                                   |   |
| VI.    | BENEFITS                                                               | 7      |
|   |                                                                   |   |
|   | Section 6.1.  Benefits Upon Normal      Retirement           | 7      |
|   | Section 6.2.  Benefits Upon Early      Retirement            | 7      |
|   | Section 6.3.  Benefits Upon      Disability                  | 7      |
|   | Section 6.4.  Benefits Upon    Death                         | 7      |
|   | Section 6.5.  Forfeiture Upon Termination for      Cause     | 8      |
|   | Section 6.6.  General Payout      Restrictions               | 9      |
|   | Section      6.7.  General Release                           | 9      |
|   | Section      6.8   Distribution to Specified Employees  | 9      |
|   | Section      6.9   General Release                 | 9      |
|   |                                                                   |   |
| VII.   | INDIVIDUAL      ACCOUNTS AND THE RABBI TRUST                           | 9      |
|   |                                                                   |   |
|   | Section 7.1.  Establishment of a Rabbi      Trust            | 9      |
|   | Section 7.2.  Payment of Benefits from the      Trust        | 9      |
|   |                                                                   |   |

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| VIII.  | BENEFICIARY      DESIGNATION                                          | 10     |
|--------|-----------------------------------------------------------------------|--------|
|   |                                                                  |   |
|   | Section 8.1.   Designation of Beneficiary                   | 10     |
|   | Section 8.2.   Payment to a Participant’s      Estate | 10     |
|   |                                                                  |   |
| IX.    | MISCELLANEOUS                                                         | 10     |
|   |                                                                  |   |
|   | Section 9.1.   Unfunded Plan                                | 10     |
|   | Section 9.2.   Withholding                                  | 10     |
|   | Section 9.3.   Costs of the      Plan                  | 10     |
|   | Section 9.4.   Nontransferability                           | 10     |
|   | Section 9.5.   Successors                                   | 11     |
|   | Section 9.6.   Address of Participant or      Beneficiary   | 11     |
|   | Section 9.7.   Applicable Law                               | 11     |
|   | Section      9.8    Amendment                     | 11     |
|   | Section      9.9    Termination                   | 11     |
|   |                                                                  |   |
| X.     | CLAIMS      PROCEDURE                                                 | 12     |
|   |                                                                  |   |
|   | Section 10.1.   Claim                                       | 12     |
|   | Section 10.2.   Denial of Claim                             | 12     |
|   | Section 10.3.   Review of Claim Denial                      | 12     |
|   | Section 10.4.   Final Decision                              | 13     |

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|  I. | ESTABLISHMENT |
|----------|---------------|

|  II. | PURPOSE |
|-----------|---------|

|  III. | CONSTRUCTION |
|------------|--------------|

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|   | (a)    | “Board”      means the Board of Directors of the Company.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
|--------|--------|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|   |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
|   | (b)    | “Cause”      means, unless otherwise defined in a Participant’s employment agreement, a      Participant’s discharge from the employment of the Company, Holdings or      any Subsidiary because such Participant willfully engages in conduct, or      lack thereof, that is demonstrably and materially injurious to the      Company, Holdings or any Subsidiary or their business reputation or      financial structure.  Determination of “Cause” shall be made by      the Committee in the exercise of good faith and reasonable      judgment. |

|   | (c) | “Code”      means the Internal Revenue Code of 1986, as  amended. |
|--------|-----|-------------------------------------------------------------------------------|

|   | (d) | “Committee”      means an Administrative Committee comprised of Company employees selected      by the President of the Company and approved by the Board to administer      the Plan pursuant to Article IVherein. |
|--------|-----|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (e) | “Company”      means MidAmerican Energy Company. With respect to the obligation to make      payments to any Participant under the Plan, Company shall mean the company      who employs the Participant.  For purposes of determining      whether there has been a Separation from Service with the Company, Company      means all entities with whom the Company would be considered a single      employer under Code Sections 414 (b) and(c). |
|--------|-----|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (f) | “Designated      Officer” means an officer of the Company, Holdings or any Subsidiary who      has been approved by the Board or the Committee, as applicable, to      participate in the Plan. |
|--------|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (g) | “Disability”      means a condition of any medically determinable physical or mental      impairment which can be expected to result in death or can be expected to      last for a continuous period of not less than 12 months and the Executive      (i) is unable to engage in any substantial gainful activity or (ii) has      been receiving income replacement benefits for a period of not less than 3      months under a group long term disability insurance policy covering      employees of the Company.  Such Disability shall be determined      by the Committee in the exercise of good faith and reasonable judgment in      reliance on competent medical advice from one or more qualified      individuals selected by theCommittee. |
|--------|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (h) | “Disability      Benefit” means, for such Participant, the Normal Retirement Supplemental      Benefit or Early Retirement Supplemental Benefit, computed as though the      Participant incurred a Separation from Service on the date he or she      reaches age 55 or, if the Participant has already reached age 55, on the      date of Disability. |
|--------|-----|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (i) | “Early      Retirement Total Benefit” means a Normal Retirement Total Benefit reducing      the 65% in the formula in Section 3.l(q) at the rate of one percentage      point for each full and one percentage point for each fraction of a year      that, on the Participants Early Retirement Date, such Participant’s age is      less than sixty-five (65) years (i.e., 60% at      age 60, 55% at age 55). |
|--------|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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|   | (j) | “Early      Retirement” means, for each Participant, the commencement of benefits      after Separation from Service of such Participant other than because of      death or Cause, but prior to such Participant reaching Normal Retirement      Age. |
|--------|-----|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (k) | “Early      Retirement Date” means the first day of the month following the later of      (a) Participant’s attainment of age fifty-five (55) or (b) Participant’s      date of Separation from Service prior to reaching Normal Retirement      Age. |
|--------|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (l) | “Early      Retirement Supplemental Benefit” (see subsection (p)    below). |
|--------|-----|-----------------------------------------------------------------------------------------|

|   | (m) | “Effective      Date” means January 1, 1996. The Effective Date for the Plan as amended      and restated herein means January 1,2005. |
|--------|-----|----------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (n) | “ERISA”      means the Employee Retirement Income Security Act of 1974, as amended from      time to time, or any successorthereto. |
|--------|-----|-------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (o) | “Normal      Retirement Total Benefit” means the annual benefit provided under the Plan      on a Participant’s Normal Retirement Date, in the amount of sixty-five      percent (65%) of such Participant’s Total Cash Compensation in effect      immediately prior to such Participant’s Separation from Service, times a      fraction, the numerator being the number of years (including fractions of      a year) of participation in this Plan (or participation in a similar      supplemental retirement plan of a Predecessor Company) as of the date of      Separation from Service, and the denominator being the number of years of      participation if the Participant had remained employed to age 55 (the      factor shall not exceed 1.0). The Board or the Committee, as applicable,      shall have the authority to grant the crediting of service with a former      employer of a Participant in the calculation of such Participant’s number      of years of participation in the Plan or to provide other credit for      service on a case by case basis. |
|--------|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (p) | “Normal      Retirement Supplemental Benefit” and “Early Retirement Supplemental      Benefit”, respectively, mean the Normal Retirement Total Benefit or Early      Retirement Total Benefit, as applicable, reduced by the sum      of: |
|--------|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (i) | the      annual benefits provided to such Participant under a Tax Qualified Pension      Plan (determined as if the Participant elected a joint and      2/3  survivor benefit under such plan and beginning on the same      date that payments begin under thisPlan); |
|--------|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (ii) | benefits      under Iowa-Illinois Gas and Electric Company Supplemental Retirement Plan,      the Iowa Resources Inc. and Subsidiaries Supplemental Retirement Income      Plan and the Midwest Resources Supplemental Retirement Plan, after      converting such benefits to an actuarially equivalent amount, as      determined by the Committee in the exercise of good faith and reasonable      judgment; and |
|--------|------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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|   | (iii) | tax      qualified defined benefit pension type retirement plan benefits payable to      such Participant by other employers of such Participant if service with      such other employers is credited as service under the Tax Qualified      Pension Plan, after converting such benefits to an actuarially equivalent      amount, as determined by the Committee in the exercise of good faith and      reasonable judgment; |
|--------|-------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (q) | “Normal      Retirement Age” means, for each Participant, the attainment of age      sixty-five (65) years. |
|--------|-----|-------------------------------------------------------------------------------------------------------------------------|

|   | (r) | “Normal      Retirement Date” means the first day of the month following the month in      which a Participant reaches Normal Retirement  Age. |
|--------|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (s) | “Participant”      means a Designated Officer of the Company, Holdings or any Subsidiary who      has been approved by the Board or the Committee, as applicable, to      participate in the Plan, and any retired individual who has a vested      accrued benefit under the Plan as specified in Article  V. |
|--------|-----|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (t) | “Plan      Year” means the calendar year beginning January 1 and ending      December 31. |
|--------|-----|------------------------------------------------------------------------------------------------------------|

|   | (u) | “Predecessor      Company” means CalEnergy Company, Inc., Midwest Resources Inc.,      Iowa-Illinois Gas and Electric Company, Midwest Energy Company, Iowa      Resources Inc., any subsidiaries of any of these companies and any member      of the same controlled group of corporations of any of these      companies. |
|--------|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (v) | “Rabbi      Trust” means a grantor trust, within the meaning of Sections 671-678 of      the Code, established by the Company for the benefit of the Participants,      both active and retired, and the Participants’ designated beneficiaries,      as specified in Article VIII. |
|--------|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (w) | “Separation      from Service” means the termination of a Participant’s employment with the      Company for any reason, or as otherwise defined in Applicable      Guidance. |
|--------|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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|   | (x) | “Spouse”      means a husband or wife as licensed in marriage by the    state. |
|--------|-----|--------------------------------------------------------------------------------------------|

|   | (y) | “Subsidiary”      means a company as to which Holdings or the Company directly or indirectly      holds securities representing at least 50% of the total voting power of      all voting securities. |
|--------|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (z) | “Survivor’s      Benefit” means the benefit payable to a Participant’s surviving Spouse,      designated beneficiary or estate under the Plan as specified in Section      6.6 in the event of such Participant’sdeath. |
|--------|-----|-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (aa)   | “Tax      Qualified Pension Plan” shall mean the tax qualified defined benefit plan,      cash balance plan and money purchase pension plan, if any, maintained by      the Company, Holdings or any Subsidiary, but shall not include any profit      sharing plans, employee stock ownership plans or qualified salary      reduction or cash or deferred plan.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |
|--------|--------|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
|   |   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   |
|   | (bb)   |  “Total      Cash Compensation” means (i) the highest amount payable to a Participant      by the Company, Holdings or any Subsidiary (or a Predecessor Company) as      monthly base salary during the five years immediately prior to termination      of services (including the year in which termination occurs) multiplied by      twelve, plus (ii) the average of the Participant’s Awards during the most      recent three year period under the Company’s Key Employee Annual Incentive      Plan or its successor plan(s), or bonus awards under a similar annual      incentive bonus program for executives of Holdings, a Subsidiary or a      Predecessor Company, plus (iii) the prior three-year average annual amount      of any other special, additional or non-recurring bonus awards or other      compensation, but only if such awards or compensation are (A) required to      be included in Total Cash Compensation under a Participant’s employment      agreement or (B) approved by the Committee for inclusion in Total Cash      Compensation as set forth in written notice to a      Participant.  Monthly base salary shall include amounts deferred      under any § 401(k) plans, § 125 cafeteria plans, nonqualified      deferred compensation plans or similar arrangements.  If less      than three years of bonus awards have been made for the Participation      during the most recent three year period prior to termination of      employment, the average of the number of bonus awards actually made during      such three year period shall be used. |

|   | (cc) | “Year      of Service” or “Years of Service” means each full twelve months of service      with the Company, Holdings, a Subsidiary or a Predecessor      Company. |
|--------|------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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| IV. | ADMINISTRATION |
|-----|----------------|

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|  V.        | ELIGIBILITY      AND PARTICIPATION |
|----------------------------------------------------|------------------------------------|

|  VI. | BENEFITS |
|-----------|----------|

|   | (a) | Death Prior to      Commencement of Benefits.  If a Participant dies prior to      commencement of the payment of any benefit hereunder, the Company shall      pay to such Participant’s designated beneficiary or estate a Survivor’s      Benefit equal to the Normal Retirement Supplemental Benefit (without      application of the percentage reduction based upon years of participation      prior to age 55) in one hundred eighty (180) equal monthly installments      commencing on the first date of the month following such date of death and      receipt of a death certificate by the Company, and continuing on the first      day of each month thereafter until the one hundred eighty (180) payments      have been made. |
|--------|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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|   | (b) | Death After      Commencement of Benefits.  If a Participant dies after      commencement of the payment of any benefit hereunder, the Company shall      pay to the Participant’s surviving Spouse a Survivor’s Benefit commencing      on the first day of the month following such date of death and receipt of      a death certificate by the Company and continuing on the first day of each      month thereafter for the remaining lifetime of the surviving      Spouse.  The Survivor’s Benefit means a benefit equal to      two-thirds of the Normal Retirement Supplemental Benefit, Early Retirement      Supplemental Benefit or Disability Benefit, as applicable, that the      Participant was receiving immediately prior to death, except that the      actuarial value of the total Survivor’s Benefit (and present valued back      to the time benefits commenced) shall be limited to fifty percent (50%) of      the total benefit based upon the actuarial value of such total benefit at      the time benefits commenced.  Both calculations shall use the      same actuarial assumptions in effect under the MidAmerican Energy Company      Retirement Plan (or subsequent replacement plan) at the time benefits      commenced. |
|--------|-----|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (c) | Payment      by the Company of the benefit in Section 6.4(a) or (b) shall relieve the      Company of the obligation to pay a Normal Retirement Supplemental Benefit,      an Early Retirement Supplemental Benefit, a Disability Benefit, or any      other benefit which the Participant might have otherwise received under      the Plan. |
|--------|-----|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

|   | (d) | In      the event a Participant dies without a surviving Spouse, after      commencement of the payment of any benefits hereunder, the Company shall      pay to such Participant’s designated beneficiary or estate a Survivor’s      Benefit equal to the Normal Retirement Supplemental Benefit, Early      Retirement Supplemental Benefit or Disability Benefit, as applicable, that      the Participant was receiving immediately prior to death such that a total      of one hundred eighty (180) equal monthly installments is paid to the      Participant and such Participant’s designated beneficiary or      estate.  The Survivor’s Benefit portion shall commence on the      first day of the month following such date of death and receipt of a death      certificate by the Company, and continue on the first day of each month      thereafter until a total of one hundred eighty (180) payments have been      made. |
|--------|-----|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|

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|  VII. | INDIVIDUAL      ACCOUNTS AND THE RABBI TRUST |
|------------|----------------------------------------------|

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|  VIII. | BENEFICIARY      DESIGNATION |
|-------------|------------------------------|

|  IX. | MISCELLANEOUS |
|-----------|---------------|

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| X.      | CLAIMS      PROCEDURE |
|----------------------------------|-----------------------|

| a)   | The      reasons for denial, with specific reference to the Plan provisions on      which the denial is based; |
|----------------|----------------------------------------------------------------------------------------------------------------|

| b)   | A      description of any additional material or information required and an      explanation of why it is necessary;and |
|----------------|--------------------------------------------------------------------------------------------------------------------------|

| c)   | An      explanation of the Plan’s claim review  procedure. |
|----------------|------------------------------------------------------------------|

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|   | MIDAMERICAN ENERGY      COMPANY           |   |   |
|--------|-------------------------------------------|--------|--------|
|   |                                      |   |   |
|   | By:  /s/  Paul J.      Leighton |   |   |
|   | Paul J.      Leighton                     |   |   |
|   | Vice    President                         |   |   |

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