Exhibit 10.1


                         SEVERANCE AND RELEASE AGREEMENT

PARTIES

The parties to this Severance and Release Agreement ("Agreement") are Sierra
Pacific Resources and its affiliates Nevada Power Company and Sierra Pacific
Power Company (collectively referred to as "Company"), and Mark A. Ruelle
("Employee").

BASIS

(a)      Employee currently holds the position of President, Nevada Power
         Company, with Company. This Agreement is not based upon any change in
         control or in the ownership of a substantial portion of the Company's
         assets.

(b)      Employee has had access to Confidential Information, as hereinafter
         defined. Employee has occupied a position of trust and confidence with
         respect to such Confidential Information.

(c)      This Agreement is intended as a final settlement of any and all claims,
         known or unknown, that Employee may have against Company arising out of
         or related to his employment with Company or the termination of that
         employment, including, but not limited to all rights Employee may have
         pursuant to the Employment Agreement as defined below. This Agreement
         provides Employee with benefits that exceed the benefits contained in
         the Employment Agreement and is adequate consideration for this
         Agreement.

TERMS OF AGREEMENT

1.       DEFINED TERMS

         1.1      "CONFIDENTIAL INFORMATION" means any plan, specification,
                  pattern, procedure, profile, design, device, list,
                  compilation, data, or information relating to the present or
                  planned business of Company which has not been released
                  publicly by authorized representatives of Company, or which is
                  not common to industry practice, including, but not limited to
                  trade secrets as defined in NRS 600A.010, et seq. Confidential
                  Information may include inventions; marketing and sales plans
                  or programs; customer and supplier information; financial
                  data; purchasing, pricing, or supply information; product
                  engineering information; technological know-how; designs,
                  plans or specifications regarding products and materials;
                  manufacturing processes and techniques; regulatory approval
                  strategies; computer programs, data, formulae and
                  compositions; service techniques and protocols; and new
                  product



                  strategies, plans and designs. Confidential Information also
                  includes information that if disclosed, could negatively
                  affect the Company's reputation and it's relationship with
                  business, governmental agencies and customers. Confidential
                  Information includes all information received by Company under
                  an obligation of confidentiality to a third party.

         1.2      "EMPLOYMENT AGREEMENT" means all previous agreements, express
                  or implied, between Company and Employee, including change in
                  control or letter agreements.

         1.3      "STIP" means short-term cash incentive payment.

         1.4      "SERP" means Supplemental Executive Retirement Plan.

2.       TERMINATION OF EMPLOYMENT

         2.1      Company shall terminate Employee's employment with Company
                  effective May 31, 2002 ("Termination Date"). Any accrued and
                  unused Paid Time Off will be included in Employee's final
                  paycheck. Employee agrees not to seek re-employment with
                  Company or any of its subsidiaries or affiliates.

3.       BENEFITS TO EMPLOYEE

         3.1      Company shall pay to Employee severance in the amount of
                  $450,000.00 ("Severance"), payable, on the condition that
                  Employee is in full compliance with the confidentiality and
                  non-disparagement provisions of this Agreement, one-half on
                  the date of separation, one-quarter 90 days after the date of
                  separation, and one-quarter on the first anniversary of the
                  date of separation.. The Severance shall be subject to
                  withholding, deductions, assessments and taxes, if applicable.

         3.2      Commencing on the Termination Date, the Company shall continue
                  to cover Employee and Employee's dependants as defined in the
                  Health Plan under its medical, prescriptive drugs, dental,
                  vision and EAP employee welfare benefit plans ("Health Plans")
                  to the same extent as Employee and his dependents are covered
                  immediately prior to the Termination Date until May 31, 2005,
                  or until Employee becomes employed with an entity which
                  provides health and medical benefits, whichever is earlier.
                  Company shall pay all costs incurred in providing the
                  above-described coverage for Employee. Employee shall be
                  eligible to participate in open enrollment and is subject to
                  any amendments or changes that would apply to other covered
                  employees. If Employee becomes eligible for similar coverage
                  through another employer or disability, then Employee shall
                  notify Company of such coverage and


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                  Company shall be entitled to terminate coverage under this
                  Agreement and/or offer Employee COBRA in the form and manner
                  required by law.

         3.3      On the Termination Date, Employee shall be paid in cash the
                  amount of his vested benefit in the SERP calculated to include
                  new provisions in the Plan, which include in the SERP payment
                  of the 2000 and 2001 STIPs, as though said STIPs had been
                  paid, and will thereafter have no SERP benefits.

         3.4      Because your employment is terminated for reasons other than
                  cause, retirement, death or disability, you will have rights
                  with respect to your Non-Qualified Stock Option grants as
                  follows, in accordance with the grant letter you received. Any
                  vested shares are exercisable within three months of the
                  Termination Date. Shares which are not vested as of the
                  Termination Date shall immediately terminate and shall be
                  forfeited to the Company.

         3.5      Employee is covered under Supplemental Executive Life
                  insurance. Employee shall continue to be covered under such
                  insurance until May 31, 2005, or until Employee becomes
                  reemployed with an entity that provides life insurance
                  benefits, whichever is earlier, at which time Employee shall
                  have the option of converting such insurance in strict
                  accordance with the terms of such policy and paying the
                  premiums thereon.

         3.6      If ever in the future any of the Company's officers are paid a
                  STIP for the year 2000 ("2000 STIP"), then the Employee shall
                  be paid the 2000 STIP at the same time and in the form and
                  manner paid to the other officer(s). The 2000 STIP shall be
                  subject to withholding, deductions, assessments, and taxes, if
                  applicable. If ever any of the Company's officers are paid a
                  STIP for the year 2001 ("2001 STIP"), then the Employee shall
                  be paid the 2001 STIP at the same time and in the form and
                  manner paid to the other officer(s). The 2001 STIP shall be
                  subject to withholding, deductions, assessments, and taxes, if
                  applicable. If ever any of the Company's officers are paid a
                  STIP for the year 2002 ("2002 STIP"), then the Employee shall
                  be paid a prorated portion of the 2002 STIP at the same time
                  and in the form and manner paid to the other officer(s).
                  Employee's prorated portion of the 2002 STIP shall be
                  calculated by dividing the number of hours credited to
                  Employee during 2002 (1/1/02 through Termination Date) by
                  2080, and Employee shall be entitled to receive the resulting
                  percentage of the 2002 STIP. The 2002 STIP shall be subject to
                  withholding, deductions, assessments, and taxes, if
                  applicable. 2000 and 2001 STIPs, if ever paid, shall be in the
                  amounts used in calculating the STIP adjustments to the SERP
                  in 3.3 unless such different amount(s) are reflective of like
                  adjustments to other officer(s)' STIPs.


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         3.7      If requested by Employee, Company shall provide Employee with
                  outplacement assistance. The Company shall determine who will
                  provide the outplacement assistance and the nature and extent
                  of such assistance. Employee shall have 18 months after the
                  Termination Date to begin receiving such assistance.

         3.8      Company has granted Employee a Special Restricted Stock Grant
                  of 4,000 shares of Company stock in June 2001. Employee has
                  fully vested in said stock and Company shall issue such stock
                  to Employee within 30 days of the Termination Date. Employee
                  may elect to receive a combination of stock and cash to
                  provide for tax liabilities.

         3.9      Employee's June 2001 agreement relating to real property owned
                  at Eagle Lake, California, shall continue for a period of 18
                  months following the date of separation in order to compensate
                  and reimburse Employee for the cost of sale and closing
                  expenses relating to such property should such sale occur.

4.       CONFIDENTIALITY

         4.1      Employee shall preserve as confidential all Confidential
                  Information. Employee shall not use Confidential Information
                  for the benefit of Employee or any third party. Employee shall
                  not disclose to others any Confidential Information or any
                  copy or notes made from any Item embodying Confidential
                  Information. If Employee is required to disclose Confidential
                  Information pursuant to a valid order of a court or other
                  governmental entity or any political subdivision thereof; then
                  Employee shall first give notice to Company so that Company
                  shall have a reasonable opportunity to interpose an objection
                  or obtain a protective order requiring that the Confidential
                  Information and/or documents so disclosed be used only for the
                  purposes for which the order was issued. The confidentiality
                  provisions herein shall expire 36 months from the date of this
                  agreement.

5.       MUTUAL NON-DISPARAGEMENT

         5.1      Employee agrees to not make disparaging statements about the
                  Company or its officers and/or directors to third parties such
                  as the news media, governmental officials, or governmental
                  agencies. This section does not apply to testimony made under
                  oath before a court or governmental entity. This section does
                  not apply to statements of opinion made to family and friends
                  so long as they are not news media, governmental officials, or
                  governmental agencies.


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         5.2      Company, its officers and/or directors agree to not make
                  disparaging statements about Employee to third parties,
                  including employees. This section does not apply to testimony
                  made under oath before a court or governmental entity.

6.       NON-COMPETITION

         6.1.     Employee agrees that the restrictions set forth in paragraphs
                  7.1 and 7.2 are fair and reasonable and are reasonably
                  required for the protection of the interests of the Company.
                  Employee agrees that compliance with the provisions of
                  paragraphs 7.1 and 7.2 will not cause Employee undue hardship
                  nor unreasonably interfere with Employee's ability to earn a
                  livelihood.

7.       RELEASE

         7.1      Employee hereby waives and releases Company and its officers,
                  directors, agents, and employees (collectively referred to as
                  "Company Agents") from any claims, rights, contracts or causes
                  of action existing or accrued as of the date this Agreement is
                  signed that Employee may have against Company or Company
                  Agents (collectively referred to as "Claims") which arise out
                  of or are related to Employee's employment with Company
                  (collectively referred to as "Release") or the termination of
                  said employment. This Release includes, but is not limited to,
                  the following:

                  7.1.1    Claims which are known or unknown at the time of the
                           signing of this Agreement;

                  7.1.2    Claims which arise under any state or federal laws,
                           including, but not limited to, the Civil Rights Act
                           of 1964, as amended, and the Age Discrimination in
                           Employment Act of 1967, as amended, which have arisen
                           on or before the date of execution of this Agreement;
                           and

                  7.1.3    Claims based upon any contract of employment,
                           including but not limited to, the Change in Control
                           Agreement, except as set forth herein.

         7.2      Employee shall not commence any action against Company or
                  Company Agents in violation of this Release.

         7.3      Employee does not waive any Claim which arises after the
                  effective date of this Agreement.


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         7.4      Employee further expressly acknowledges and agrees that:

                  7.4.1    In consideration for this Waiver, Employee shall
                           receive compensation beyond that which Employee was
                           otherwise entitled to receive before entering into
                           this Agreement;

                  7.4.2    Employee has been advised to consult with an attorney
                           before signing this Agreement;

                  7.4.3    This Agreement is being offered only to Employee at
                           this time.

                  7.4.4    Employee was given a copy of the Agreement on or
                           about May 10, 2002. Employee was informed that
                           Employee had 21 days within which to consider the
                           Agreement. If Employee fails to execute this
                           Agreement within said 21-day period, then the terms
                           and conditions contained in this Agreement are
                           automatically withdrawn without further action or
                           notice by Company.

                  7.4.5    Employee was informed and understands that Employee
                           has seven days following the date Employee executes
                           this Agreement in which to revoke this Agreement. Any
                           revocation of the Agreement must be in writing and
                           delivered to the Acting Vice-President of Human
                           Resources of Company during the revocation period.
                           This Agreement will become effective and enforceable
                           seven days following execution by Employee, unless it
                           is revoked during the seven-day period.

8.       MISCELLANEOUS PROVISIONS

         8.1.     AGREEMENT IS CONFIDENTIAL: Unless and until the terms of this
                  Agreement, and the amount of any payment eligible to be paid
                  or actually paid under this Agreement, are disclosed in
                  writing to the public by Company pursuant to any applicable
                  legal duty to disclose such information, it shall be a
                  condition of eligibility to receive or retain any payment
                  pursuant to this Agreement that Employee hold the terms of
                  this Agreement and the amount of any payment hereunder in
                  strict confidence. Employee may disclose such information on a
                  confidential basis to Employee's family and to any financial
                  counselor, tax advisor or legal counsel retained by Employee.

         8.2      ASSIGNMENT BY COMPANY: The obligations of Company hereunder
                  shall be the obligations of any and all successors and assigns
                  of Company. Company may assign this Agreement without
                  Employee's consent to any affiliate or subsidiary of Company,
                  provided that such assignment does not relive the Company's
                  obligations hereunder. Company may assign this Agreement
                  without Employee's consent to any company that


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                  acquires all or substantially all of the stock or assets of
                  Company, or into which or with which Company is merged or
                  consolidated. The Employee may not assign the Agreement, and
                  no person other than Employee or Employee's estate may enforce
                  the rights of Employee under this Agreement.

         8.3      Mutual WAIVER: The waiver by Employee or Company of a
                  violation respectively by Company or by Employee of any
                  provision of this Agreement shall not be construed as a waiver
                  of any subsequent violation.

         8.4      SEVERABILITY: The provisions of this Agreement shall be
                  severable, and in the event that any portion or provision of
                  it is found by any court to be unenforceable, in whole or in
                  part, the remainder of this Agreement shall nevertheless be
                  enforceable and binding on the parties. In the event that any
                  restriction set forth in this Agreement shall be declared by a
                  court of competent jurisdiction to exceed the maximum
                  restriction such court deems reasonable and enforceable, the
                  restriction deemed reasonable and enforceable by the court
                  shall become and thereafter be the maximum restriction
                  hereunder.

         8.5      REVIEW OF AGREEMENT: Employee acknowledges that Employee had
                  sufficient opportunity to review this Agreement with an
                  attorney or, if Employee did not do so, it is because Employee
                  read and understands this Agreement and did not believe that
                  legal advice was necessary. Employee agrees that the
                  restrictions contained in this Agreement are fair and
                  appropriate under the circumstances.

         8.6      DISPUTE RESOLUTION: Any dispute between the parties which is
                  covered by, arises out of, or is based upon this Agreement
                  shall be settled by final and binding arbitration. Any award
                  or determination rendered by the arbitrator may be entered as
                  a judgment in any court having jurisdiction thereof. The
                  arbitration is subject to the following:

                  8.6.1    The arbitration shall be administered by the American
                           Arbitration Association ("AAA") in accordance with
                           its Employment Dispute Resolution Rules ("Rules") in
                           effect at the time of the arbitration.

                  8.6.2    The arbitration shall be heard by one neutral
                           arbitrator. The arbitrator shall be an attorney
                           admitted to the practice of law in at least one
                           state.

                  8.6.3    The arbitrator shall have the authority to award any
                           remedy or relief that a state or federal court having
                           jurisdiction over the persons and subject matter is
                           authorized to grant.


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                  8.6.4    The Company shall pay all of the costs and/or fees
                           charged by AAA and the arbitrator. The arbitrator
                           shall have the authority to award attorney's fees and
                           costs pursuant to sub-section 8.6.3 above.

         8.7      JURISDICTION: This Agreement shall be construed under the laws
                  of the State of Nevada except where Federal laws are
                  applicable. Venue for any arbitration or action to enforce the
                  arbitration provisions of this Agreement shall be in the State
                  of Nevada.

         8.8      EFFECTIVE DATE: This Agreement shall become effective on the
                  date it is signed by the Employee.

         8.9      FINAL AGREEMENT: This Agreement supercedes all prior
                  understandings, statements or agreements concerning the
                  subject matter of this Agreement, including the Employment
                  Agreement or Change in Control Agreement. Any amendment to
                  this Agreement shall be in writing and signed by both parties.
                  This Agreement contains all of the terms and conditions agreed
                  upon by the parties. There are no understandings or agreements
                  which conflict or modify the terms of this Agreement. Company
                  has made no representations or promises upon which Employee
                  relies in signing this Agreement except the terms set forth
                  herein. Company has made no representations upon which
                  Employee relies concerning the tax characteristics or status
                  of the benefits described in this Agreement.

COMPANY                                      MARK A. RUELLE


By:
   ------------------------------            --------------------------------
Date: May __, 2002                           Date: May __, 2002




MAR-SEVAGRMT02