Exhibit 10(a)73 SUPPLEMENTAL BENEFIT PLAN FOR ALABAMA POWER COMPANY SUPPLEMENTAL BENEFIT PLAN FOR ALABAMA POWER COMPANY Page ARTICLE I - PURPOSE AND ADOPTION OF PLAN . . . . . . . 1 1.1 Adoption . . . . . . . . . . . . . . . . 1 1.2 Purpose. . . . . . . . . . . . . . . . . 1 ARTICLE II - DEFINITIONS . . . . . . . . . . . . . . . 2 2.1 Account. . . . . . . . . . . . . . . . . 2 2.2 Administrative Committee . . . . . . . . 2 2.3 Affiliated Employer. . . . . . . . . . . 2 2.4 Beneficiary. . . . . . . . . . . . . . . 2 2.5 Board of Directors . . . . . . . . . . . 2 2.6 Code . . . . . . . . . . . . . . . . . . 2 2.7 Common Stock . . . . . . . . . . . . . . 2 2.8 Company. . . . . . . . . . . . . . . . . 2 2.9 Deferred Compensation Plan . . . . . . . 3 2.10 Effective Date . . . . . . . . . . . . . 3 2.11 Employee . . . . . . . . . . . . . . . . 3 2.12 ESOP . . . . . . . . . . . . . . . . . . 3 2.13 Non Pension Benefit. . . . . . . . . . . 3 2.14 Participant. . . . . . . . . . . . . . . 3 -i- 2.15 Pension Benefit. . . . . . . . . . . . . 3 2.16 Pension Plan . . . . . . . . . . . . . . 3 2.17 Plan . . . . . . . . . . . . . . . . . . 3 2.18 Plan Year. . . . . . . . . . . . . . . . 4 2.19 Savings Plan. . . . . . . . . . . . . . 4 ARTICLE III - ADMINISTRATION OF PLAN . . . . . . . . . 4 3.1 Administrator. . . . . . . . . . . . . . 4 3.2 Powers . . . . . . . . . . . . . . . . . 4 3.3 Duties of the Administrative Committee. . . . . . . . . . . . . . . 5 3.4 Indemnification. . . . . . . . . . . . . 6 ARTICLE IV - ELIGIBILITY . . . . . . . . . . . . . . . 7 4.1 Eligibility Requirements . . . . . . . . 7 4.2 Determination of Eligibility . . . . . . 7 ARTICLE V - BENEFITS . . . . . . . . . . . . . . . . . 8 5.1 Pension Benefit. . . . . . . . . . . . . 8 5.2 Non Pension Benefit. . . . . . . . . . . 10 5.3 Distribution of Benefits . . . . . . . . 13 5.4 Funding of Benefits. . . . . . . . . . . 16 5.5 Withholding. . . . . . . . . . . . . . . 16 -ii- ARTICLE VI - MISCELLANEOUS . . . . . . . . . . . . . . 17 6.1 Assignment . . . . . . . . . . . . . . . 17 6.2 Amendment and Termination. . . . . . . . 17 6.3 No Guarantee of Employment . . . . . . . 17 6.4 Construction . . . . . . . . . . . . . . 18 -iii- SUPPLEMENTAL BENEFIT PLAN FOR ALABAMA POWER COMPANY ARTICLE I - PURPOSE AND ADOPTION OF PLAN 1.1 Adoption: Alabama Power Company hereby adopt and establish the Supplemental Benefit Plan for Alabama Power Company. The Plan shall be an unfunded deferred compensation arrangement whose benefits shall be paid solely from the general assets of the Company. 1.2 Purpose: The Plan is designed to provide certain retirement and other deferred compensation benefits primarily for a select group of management or highly compensated employees which are not otherwise payable or cannot otherwise be provided by the Company under the Pension Plan for Employees of Alabama Power Company, the Employee Savings Plan for The Southern Company System, and the Employee Stock Ownership Plan of The Southern Company System, as a result of the limitations set forth under Sections 401(a)(17), 402(g), and 415 of the Internal Revenue Code of 1986, as amended from time to time. -1- ARTICLE II DEFINITIONS 2.1 "Account" shall mean the account or accounts established and maintained by a Company to reflect the interest of a Participant in the Plan resulting from a Participant's Non Pension Benefit calculated in accordance with Section 5.2. 2.2 "Administrative Committee" shall mean the Retirement Board of the Pension Plan. 2.3 "Affiliated Employer" shall mean any corporation which is a member of the controlled group of corporations of which The Southern Company is the common parent corporation. 2.4 "Beneficiary" shall mean any person, estate, trust, or organization entitled to receive any payment under the Plan upon the death of a Participant. 2.5 "Board of Directors" shall mean the Board of Directors of the Company. 2.6 "Code" shall mean the Internal Revenue Code of 1986, as amended from time to time. 2.7 "Common Stock" shall mean common stock of The Southern Company. 2.8 "Company" shall mean Alabama Power Company. 2.9 "Deferred Compensation Plan" shall mean the Deferred Compensation Plan for The Southern Electric System, as amended -2- from time to time, following its adoption by the Board of Directors. 2.10 "Effective Date" shall mean January 1, 1983. The Effective Date of this amendment and restatement shall mean January 1, 1988. 2.11 "Employee" shall mean any person who is currently employed by the Company. 2.12 "ESOP" shall mean the Employee Stock Ownership Plan of The Southern Company System, as amended from time to time. 2.13 "Non Pension Benefit" shall mean the benefit described in Section 5.2. 2.14 "Participant" shall mean an Employee or former Employee of a Company who is eligible to receive benefits provided by the Plan. 2.15 "Pension Benefit" shall mean the benefit described in Section 5.1. 2.16 "Pension Plan" shall mean the defined benefit pension plan maintained by the Company or an Affiliated Employer, as amended from time to time. 2.17 "Plan" shall mean the Supplemental Benefit Plan for Alabama Power Company, as amended from time to time. 2.18 "Plan Year" shall mean the calendar year. -3- 2.19 "Savings Plan" shall mean the Employee Savings Plan for The Southern Company System, as amended from time to time. Where the context requires, the definitions of all terms set forth in the Pension Plan, the ESOP, the Savings Plan and the Deferred Compensation Plan shall apply with equal force and effect for purposes of interpretation and administration of the Plan, unless said terms are otherwise specifically defined in the Plan. The masculine pronoun shall be construed to include the feminine pronoun and the singular shall include the plural, where the context so requires. ARTICLE III ADMINISTRATION OF PLAN 3.1 Administrator. The general administration of the Plan shall be placed in the Administrative Committee. 3.2 Powers. The Administrative Committee shall administer the Plan in accordance with its terms and shall have all powers necessary to carry out the provisions of the Plan more particularly set forth herein. It shall interpret the Plan and shall determine all questions arising in the administration, interpretation and application of the Plan. Any such determination by it shall be conclusive and binding on all persons. It may adopt such regulations as it deems desirable for -4- the conduct of its affairs. It may appoint such accountants, counsel, actuaries, specialists and other persons as it deems necessary or desirable in connection with the administration of this Plan, and shall be the agent for the service of process. 3.3 Duties of the Administrative Committee. (a) The Administrative Committee is responsible for the daily administration of the Plan. It may appoint other persons or entities to perform any of its fiduciary functions. The Administrative Committee and any such appointee may employ advisors and other persons necessary or convenient to help it carry out its duties, including its fiduciary duties. The Administrative Committee shall have the right to remove any such appointee from his position. Any person, group of persons or entity may serve in more than one fiduciary capacity. (b) The Administrative Committee shall maintain accurate and detailed records and accounts of Participants and of their rights under the Plan and of all receipts, disbursements, transfers and other transactions concerning the Plan. Such accounts, books and records relating thereto shall be open at all reasonable times to inspection and audit by persons designated by the Administrative Committee. -5- (c) The Administrative Committee shall take all steps necessary to ensure that the Plan complies with the law at all times. These steps shall include such items as the preparation and filing of all documents and forms required by any governmental agency; maintaining of adequate Participants' records; recording and transmission of all notices required to be given to Participants and their Beneficiaries; the receipt and dissemination, if required, of all reports and information received from an Employing Company; securing of such fidelity bonds as may be required by law; and doing such other acts necessary for the proper administration of the Plan. The Administrative Committee shall keep a record of all of its proceedings and acts, and shall keep all such books of account, records and other data as may be necessary for proper administration of the Plan. 3.4 Indemnification. The Company shall indemnify the Administrative Committee against any and all claims, losses, damages, expenses and liability arising from an action or failure to act, except when the same is finally judicially determined to be due to gross negligence or willful misconduct. The Company may purchase at their own expense sufficient liability insurance for the Administrative Committee to cover any and all claims, -6- losses, damages and expenses arising from any action or failure to act in connection with the execution of the duties as Administrative Committee. No member of the Administrative Committee who is also an Employee of the Company shall receive any compensation from the Plan for his service as such. ARTICLE IV ELIGIBILITY 4.1 Eligibility Requirements. All Employees (a) whose benefits under the Pension Plan of the Company are limited by the limitations set forth in Sections 401(a)(17) and 415 of the Code, (b) for whom contributions by the Company to the Savings Plan are limited by the limitations set forth in Sections 401(a)(17), 401(k), 401(m), 402(g) and 415 of the Code, or (c) for whom contributions by the Company to the ESOP are limited by the limitations set forth in Sections 401(a)(17) and 415 of the Code, shall be eligible to receive benefits under the Plan. 4.2 Determination of Eligibility. The Administrative Committee shall determine which Employees are eligible to participate. Upon becoming a Participant, an Employee shall be deemed to have assented to the Plan and to any amendments hereafter adopted. The Administrative Committee shall be authorized to rescind the eligibility of any Participant if -7- necessary to insure that the Plan is maintained primarily for the purpose of providing deferred compensation to a select group of management or highly compensated employees under the Employee Retirement Income Security Act of 1974, as amended. ARTICLE V BENEFITS 5.1 Pension Benefit. (a) If a Participant has Accredited Service with respect to the Pension Plan of the Company, but not with respect to the Pension Plan of any Affiliated Employer, he shall be entitled to a Pension Benefit equal to that portion of his Retirement Income under the Pension Plan of the Company which is not payable under such Pension Plan as a result of the limitations imposed by Sections 401(a)(17), 415(b), and 415(e) of the Code. (b) If a Participant has Accredited Service with respect to the Pension Plan of the Company and with respect to the Pension Plan of one or more Affiliated Employers, his Pension Benefit payable by the Company, and any Affiliated Employer(s) shall be equal to that portion of his combined Retirement Income under each Pension Plan which is not payable under any of such Pension Plans as a result of the limitations described by -8- Sections 401(a)(17), 415(b), and 415(e) of the Code, multiplied by a fraction, the sum of the individual fractions not to exceed one (1), the numerator of which is his years of Accredited Service under the Pension Plan of the Company or any Affiliated Employer(s) and the denominator which is his total years of Accredited Service under the Pension Plans of the Company and any Affiliated Employer(s). (c) For purposes of this Section 5.1, the Pension Benefit of a Participant shall be calculated based on the Participant's Earnings that are considered under the Pension Plan of the Company in calculating his Retirement Income, without regard to the limitation of Section 401(a)(17) of Code, but excluding any portion of his Compensation he may have elected to defer under the Deferred Compensation Plan. (d) To the extent that a Participant's Retirement Income under a Pension Plan is recalculated as a result of an amendment to such Pension Plan in order to increase the amount of his Retirement Income, the Participant's Pension Benefit shall also be recalculated in order to properly reflect such increase in determining payments of the Participant's Pension Benefit made on or after the effective date of such increase. -9- 5.2 Non Pension Benefit. (a) A Participant shall be entitled to a Non Pension Benefit which is determined under this Section 5.2. An Account shall be established for the Participant by the Company, as of his initial Plan Year of participation in the Plan. Each Plan Year such Account shall be credited with an amount equal to the amount that the Company is prohibited from contributing (1) to the Savings Plan on behalf of the Participant as a result of the limitations imposed by Sections 401(a)(17), 401(k), 401(m), 402(g), 415(c), and 415(e) of the Code and (2) to the ESOP on behalf of the Participant as a result of the limitations imposed by Sections 401(a)(17), 415(c), and 415(e) of the Code. (b) For purposes of this Section 5.2, the Non Pension Benefit of a Participant shall be calculated based on the Participant's Compensation that would have been considered in calculating allocations to his accounts under the Savings Plan and ESOP, without regard to the limitations of Section 401(a)(17) or Section 402(g) of the Code, but excluding any portion of his Compensation he may have elected to defer under the Deferred Compensation Plan. -10- (c) All amounts so credited to the Account of the Participant shall be deemed to be invested in the Common Stock at the same time that such amounts would have been so invested if they had been contributed by the Company to the Savings Plan or the ESOP, as the case may be. In addition, such Account shall be credited with respect to shares of Common Stock allocated to the Participant's Account as follows: (1) In the case of cash dividends, such additional shares as could be purchased with the dividends which would have been payable if the credited shares had been outstanding; (2) In the case of dividends payable in property other than cash or Common Stock, such additional shares as could be purchased with the fair market value of the property which would have been payable if the credited shares had been outstanding; or (3) In the case of dividends payable in Common Stock, such additional shares as would have been payable on the credited shares if they had been outstanding. -11- (d) As soon as practicable following the first day of his eligibility to have benefits credited to his Account, a Participant shall designate in writing on a form to be prescribed by the Company the method of payment of his Account, which shall be the payment of a single lump sum or a series of annual installments not to exceed twenty (20). The method of distribution initially designated by a Participant shall not be revoked and shall govern the distribution of each Account established for the benefit of the Participant by the Company. Notwithstanding, in the sole discretion of the Administrative Committee upon application by the Participant, the method of distribution designated by such Participant may be modified not prior to 395 days nor later than 365 days prior to a Participant's date of separation from service in order to change the form of distribution of his Account in accordance with the terms of the Plan. Each Participant, his Beneficiary, and legal representative shall be bound as to any action taken pursuant to the method of distribution elected by a Participant and the terms of the Plan. -12- 5.3 Distribution of Benefits. (a) The Pension Benefit, as determined in accordance with Section 5.1, shall be payable in monthly increments on the first day of the month concurrently with and in the same manner as the Participant's Retirement Income under the Pension Plan. The Beneficiary of a Participant's Pension Benefit shall be the same as the beneficiary of the Participant's Retirement Income under the Pension Plan. (b) When a Participant terminates his employment with the Company, said Participant shall be entitled to receive the market value of any shares of Common Stock (and fractions thereof) reflected in any Account maintained by the Company for his benefit under the Plan in a single lump sum distribution or annual installments not to exceed twenty (20). Such distribution shall be made not later than sixty (60) days following the close of the calendar quarter in which his termination of employment occurs, or as soon as reasonably practicable thereafter. The transfer by a Participant between companies in the Southern electric system shall not be deemed to be a termination of employment with the Company. No portion of a Participant's Account shall be distributed in Common Stock. -13- (c) In the event a Participant elects to receive the distribution of his Account in annual installments, the first payment shall be made not later than sixty (60) days following the close of the calendar quarter in which his termination of employment occurs, or as soon as reasonably practicable thereafter, and shall be an amount equal to the balance in the Participant's Account divided by the number of annual installment payments. Each subsequent annual payment shall be an amount equal to the balance in the Participant's Account divided by the number of the remaining annual payments and shall be due on the anniversary of the preceding payment date. No portion of a Participant's Account shall be distributed in Common Stock. (d) Upon the death of a Participant, or a former Participant prior to the payment of all amounts credited to said Participant's Account, the unpaid balance shall be paid in the sole discretion of the Administrative Committee (1) in a lump sum to the designated Beneficiary of a Participant or former Participant within sixty (60) days following the close of the calendar quarter in which the Administrative Committee is provided evidence of the Participant's death (or as soon as reasonably practicable thereafter) or (2) in accordance with the distribution method chosen by such Participant or former -14- Participant. The Beneficiary designation may be changed by the Participant or former Participant at any time without the consent of the prior Beneficiary. In the event a Beneficiary designation is not on file or the designated Beneficiary is deceased or cannot be located, payment will be made to the estate of the Participant or former Participant. No portion of a Participant's Account shall be distributed in Common Stock. (e) Upon the total disability of a Participant or former Participant, as determined by the Social Security Administration, the unpaid balance of his Account shall be paid in the sole discretion of the Administrative Committee (1) in a lump sum to the Participant or former Participant, or his legal representative within sixty (60) days following the notification of the Administrative Committee of the determination of disability by the Social Security Administration (or as soon as reasonably practicable thereafter) or (2) in accordance with the distribution method elected by such Participant or former Participant. No portion of a Participant's Account shall be distributed in Common Stock. (f) The Administrative Committee in its sole discretion upon application made by the Participant, a designated Beneficiary, or their legal representative, may determine to -15- accelerate payments or, in the event of death or total disability (as determined by Social Security Administration), to extend or otherwise make payments in a manner different from the manner in which such payment would be made under the method of distribution elected by the Participant in the absence of such determination. 5.4 Funding of Benefits. The Company maintaining an Account for the benefit of a Participant shall not reserve or otherwise set aside funds for the payment of its obligations under the Plan, and such obligations shall be paid solely from the general assets of the Company. Notwithstanding that a Participant shall be entitled to receive the balance of his Account under the Plan, the assets from which such amount shall be paid at all times remain subject to the claims of the creditors of the Company. 5.5 Withholding. There shall be deducted from the payment of any Pension Benefit or Non Pension Benefit due under the Plan the amount of any tax required by any governmental authority to be withheld and paid over by the Company to such governmental authority for the account of the Participant or Beneficiary entitled to such payment. -16- ARTICLE VI MISCELLANEOUS 6.1 Assignment. Neither the Participant, his Beneficiary, or his legal representative shall have any rights to sell, assign, transfer or otherwise convey the right to receive the payment of any Pension Benefit or Non Pension Benefit due hereunder, which payment and the right thereto are expressly declared to be nonassignable and nontransferable. Any attempt to assign or transfer the right to payment under the Plan shall be null and void and of no effect. 6.2 Amendment and Termination. The Plan may be amended or terminated at any time by the Board of Directors, provided that no amendment or termination shall cause a forfeiture or reduction in any benefits accrued as of the date of such amendment or termination. 6.3 No Guarantee of Employment. Participation hereunder shall not be construed as creating any contract of employment between the Company and a Participant, nor shall it limit the right of the Company to suspend, terminate, alter, modify, whether or not for cause, the employment relationship between the Company and a Participant. -17- 6.4 Construction. This Plan shall be construed in accordance with and governed by the laws of the State of Alabama, to the extent such laws are not otherwise superseded by the laws of the United States. IN WITNESS WHEREOF, the Plan has been executed by duly authorized officers of Alabama Power Company, pursuant to resolutions of the Board of Directors of the Alabama Power Company, this day of , . ALABAMA POWER COMPANY (CORPORATE SEAL) By: Attest: [adamscl] h:\wpdocs\mtd\alapower\sup-ben.pln -18-