AMEREN DEFERRED COMPENSATION PLAN 2007 Document

The purpose of the Ameren Deferred Compensation Plan (“Plan”) is to provide eligible participants with the opportunity to accumulate capital of up to 50 percent of annual base salary and some or all of the Incentive Awards awarded pursuant to the Ameren Corporation Executive Incentive Compensation Program. Participation in the Plan is voluntary. The implementation of the Plan will provide Ameren Corporation and its subsidiaries (“Ameren”) with the means to attract and retain key employees by offering a competitive salary deferral program. The Plan is administered by the Ameren Services Company (“Company”).

Certain words and phrases are defined when first used in later paragraphs of the Plan. In addition, the following words and phrases when used herein, unless the context clearly requires otherwise, shall have the following respective meanings:

Ameren: As used herein shall mean Ameren Corporation and its subsidiaries.

Board: The Board of Directors of Ameren Corporation.

Company: As used herein shall mean Ameren Services Company, as agent for Ameren and as administrator of the Plan.

Deferral Account: Book entries reflecting each Participant’s Deferred Amounts and Interest credited thereon pursuant to the provisions of Section 6. A separate Deferral Account shall be maintained for each Deferral Commitment commenced hereunder.

Deferral Commitment: The sum of the Salary and Incentive Award deferrals to which the Participant obligates himself pursuant to the provisions of Section 4.

Deferred Amount: The amount of Salary and Incentive Award which a Participant elects to defer pursuant to the provisions of the Plan.

Effective Date: January 1, 1986, as restated and amended from time to time.

Incentive Award: The portion of an incentive award awarded to an officer, executive or other employee of Ameren pursuant to the provisions of the Ameren Executive Incentive Compensation Program which is deferred pursuant to the provisions of the Plan.

Interest: The amount of interest which a Participant shall be deemed to earn on his Deferred Amounts and which shall be credited to his Deferral Account as determined pursuant to Section 7.

Participant: Any person eligible to participate in the Plan pursuant to Section 3 who elects or has elected to defer a portion of his salary pursuant to the provisions of the Plan.

Performance-Based Compensation: An Incentive Award that (a) is based on services performed over a period of at least 12 months and (b) constitutes performance-based compensation as defined in Treasury Regulations issued under Code Section 409A.

Plan: The Ameren Deferred Compensation Plan, as revised and restated.

Plan Year: The 12-month period commencing January 1 and ending on December 31.

Retirement: Termination of employment after attainment of at least age 55.

Salary: The annual base pay of a Participant, exclusive of any income from commissions, benefits, allowances, and/or other incentive plans paid by Ameren.

Specified Employee: A key employee (as defined in Code Section 416(i) without regard to Code Section 416(i)(5)) determined in accordance with the meaning of such term under Code Section 409A and the regulations promulgated thereunder. The identification date for purposes of determining Ameren’s key employees shall be December 31.

Any employee of Ameren who is designated and treated by Ameren as a member of the Ameren Leadership Team shall be eligible to participate in the Plan, unless the Human Resources Committee of Ameren Corporation Board of Directors designates such person as ineligible for the Plan. Any individual who is eligible to participate in the Plan may become a Participant by commencing a Deferral Commitment.

A Participant may commence a Deferral Commitment by making an election to defer a percentage of Salary, in 1% increments, up to a maximum of 50 percent. The amount of Salary deferred may not reduce the amount of the Participant’s non-deferred Salary for the year of deferral below the maximum level of “Federal Insurance Contributions Act taxable wages” (i.e., the FICA taxable wage base). Upon application to the Company by a Participant, the Company may, in its discretion, permit a Participant to defer Salary in excess of 50 percent or waive the FICA taxable wage base limitation. A Participant may defer receiving some or all of an Incentive Award granted to such Participant, as described above, by electing to defer receiving either a percentage of an Incentive Award otherwise payable to him or by electing to defer all of an Incentive Award greater than a set dollar amount.

During a Plan Year, a Deferral Commitment shall be irrevocable, and the deferral percentage or amount elected by the Participant thereunder shall not be increased or decreased.

The term of a normal Deferral Commitment shall be the Plan Year.

The Participant’s Deferred Amounts shall be credited to his Deferral Account by no later than the end of the month in which such amounts would, but for such deferral, be payable to the Participant.

A Participant’s written election to defer Salary for a Plan Year shall indicate the percentage or amount of Salary and/or Incentive Award which the Participant is electing to defer under the Plan and the method of distribution of such amounts, as permitted under Section 8. Such election shall be made in accordance with procedures established by the Company by no later than the last date specified for such election, which shall not be later than (a) in the case of an election to defer Salary or an Incentive Award that is not Performance-Based Compensation, the December 31 preceding the first day of the Plan Year for which such election shall be effective or (b) in the case of an election to defer an Incentive Award which is Performance-Based Compensation, a date (as determined by the Company) no later than the date that is six months before the end of the performance period, provided that, (1) the Participant continuously performs services from the date the performance criteria are established through the date the Participant makes his or her election and (2) the Incentive Award is not substantially certain to be paid and is not readily ascertainable as of such date. In the case of a Participant who becomes eligible during a Plan Year, an election to defer Salary and/or an Incentive Award may be made within 30 days after the date the employee becomes eligible to participate in the Plan (and any other “plan” (as defined in Treasury Regulations promulgated under Code Section 409A) of deferred compensation) with respect to services to be performed subsequent to the election, which shall be irrevocable during such initial year of participation. With respect to an Incentive Award, such initial election shall apply only to the portion of such compensation equal to the total amount of compensation for the performance period multiplied by the ratio of the number of days remaining in the performance period after the election over the total number of days in the performance period. However, an election with respect to an Incentive Award may apply to the entire Incentive Award, if elected by the Participant, and/or be made at a later date if otherwise permitted under subsection (b) above.

There shall be established a Deferral Account in the name of each Participant who elects to defer Salary and/or an Incentive Award by commencing a Deferral Commitment under the provisions of the Plan. A separate Deferral Account will be maintained for each Deferral Commitment commenced by each Participant with respect to Salary and Incentive Awards related to that Deferral Commitment. The Deferral Account shall reflect the value of the Participant’s Deferred Amounts plus Interest credited thereon with respect to the specific Deferral Commitment. The records for each Deferral Account maintained for the Participant shall be available for inspection by the Participant at reasonable times, and the Company shall make available to the Participant a statement indicating the aggregate amount credited to each of the Participant’s Deferral Accounts and the value of each such Deferral Account.

Interest calculated at the rate or rates, as hereinafter described, shall accrue from the date Salary and/or Incentive Awards deferrals are credited to the Participant’s Deferral Account and shall be compounded annually and credited to the Participant’s Deferral Account as of the last business day of each Plan Year (or as of such other dates as determined by the Company) for which the Participant has a Deferral Account balance. While the Participant is employed by Ameren, the Participant’s Deferral Account balance shall earn Interest at the “Plan Interest Rate.” After retirement, termination of employment (in the case of a Specified Employee subject to a 6-month delay described in Section 9.C) or following the death of the Participant, the Participant’s Deferral Account balance shall earn interest at the “Base Interest Rate.”

The “Plan Interest Rate” for any Plan Year shall be 150 percent of the average Mergent’s Seasoned AAA Corporate Bond Yield Index (“Mergent’s Index”, formerly called “Moody’s Index”) for the previous calendar year. Interest rates are calculated annually as of the first day of the Plan Year.

The “Base Interest Rate” for any Plan Year shall be equal to the average Mergent’s Index for the previous calendar year.

A.

Distribution Alternatives:

The balance of the Participant’s Deferral Account to be distributed in a single lump sum, payable the first day of the first month following the month in which Retirement occurs.

The balance of the Participant’s Deferral Account to be distributed in a single lump sum, payable on March 1 of the calendar year following Retirement.

The balance of the Participant’s Deferral Account to be distributed in substantially equal installments over a period of 5 years commencing at Retirement.

The balance of the Participant’s Deferral Account to be distributed in substantially equal installments over a period of 5 years commencing on March 1 of the calendar year following Retirement.

The balance of the Participant’s Deferral Account to be distributed in substantially equal installments over a period of 10 years commencing at Retirement.

The balance of the Participant’s Deferral Account to be distributed in substantially equal installments over a period of 10 years commencing on March 1 of the calendar year following Retirement.

The balance of the Participant’s Deferral Account to be distributed in substantially equal installments over a period of 15 years commencing at Retirement.

The balance of the Participant’s Deferral Account to be distributed in substantially equal installments over a period of 15 years commencing on March 1 of the calendar year following Retirement.

In accordance with the procedures established by the Company, a Participant may elect to change his method of distribution with respect to Deferral Commitments related to years prior to 2008, with respect to amounts not otherwise payable in 2007, if such an election is made no later than December 31, 2007.

On and after January 1, 2008, a Participant may elect to change his method of distribution with respect to one or more Deferral Accounts in accordance with rules established by the Company. If a Participant makes such election, then (a) such election shall not take effect until at least 12 months after the date on which such election is made, and submitted to the Company; (b) the first payment with respect to which such election is made shall be deferred for a period of not less than 5 years from the date such payment would otherwise have been made; (c) any election related to a payment that was otherwise to be made at a specified time may not be made less than 12 months prior to the date of the first scheduled payment; and (d) with respect to a change in payment form, such change may not impermissibly accelerate the time or schedule of any payment under the Plan, except as provided in regulations promulgated by the Secretary of Treasury.

A change in the method of distribution must be made in accordance with the rules and procedures established by the Company.

General:

Except as described in Paragraph B, if a Participant terminates employment after completing one or more Deferral Commitments but prior to becoming eligible for Retirement, the balance of the Participant’s corresponding Deferral Account(s), including any Deferral Accounts subject to a scheduled payment option under Section 10, shall be distributed in a single sum to the Participant no later than 30 days after the date the Participant terminates employment.

Change of Control:

In the event that a Participant terminates employment from Ameren after completing one or more Deferral Commitments but prior to becoming eligible for Retirement and after the occurrence of a Change of Control, the balance of the Participant’s Deferral Account(s), including Interest calculated at the Plan Interest Rate, shall be distributed in a single sum to the Participant no later than 30 days after the date the Participant terminates employment. For purposes of this Paragraph, Change of Control shall have the same meaning that it has in the Amended and Restated Ameren Corporation Change of Control Severance Plan.

Notwithstanding the above, payment of benefits shall not be made under this Section 9 prior to the date which is 6 months after the date of a Participant’s termination of employment in the case of a Participant who is determined to be a Specified Employee at the time of his termination of employment. In such case, the lump sum amount determined under Section 9.A or 9.B, as appropriate, shall be paid to the Participant as of the day after the last day of such 6-month period.

At the time a Participant makes an election to defer Salary and/or Incentive Awards under the Plan, he or she may elect for the distribution of the balance of that Deferral Account to be made in a specified year; provided such year is at least three years after the year to which the deferral relates. Distributions pursuant to this scheduled payment option shall be paid in a lump sum no later than the March 1^st of the calendar year following the specified year.

In the event that it is determined by a duly licensed physician selected by the Company that, because of ill health, accident or other disability, a Participant is no longer able, properly and satisfactorily, to perform his regular duties and responsibilities, and therefore, such Participant has been placed on long term disability ("LTD"), the Company shall commence distribution of the Participant’s Deferral Account(s) in accordance with the distribution method selected by the Participant, but only if the Participant is disabled within the meaning of Code Section 409A(a)(2)(C). Where a Participant had elected a deferral option (Section 8, Alternatives 2, 4, 6 and 8), payments will be made in the same form as elected (i.e., lump sum or installment) but will commence no later than 30 days after the Participant’s LTD effective date, to the extent a distribution is permitted under the previous sentence. Under this 

Prior to Retirement:

In the event of the Participant’s death prior to his Retirement, the Company shall commence distribution of the Participant’s Deferral Account(s) to the Participant’s designated beneficiary(ies) according to the method(s) selected by the Participant pursuant to Section 8. However, where the Participant had chosen a deferral option (Section 8, Alternatives 2, 4, 6 and 8), payment will be made in the same form as elected (i.e., lump sum or installment) but will commence as soon as administratively feasible but no later than 30 days after the month in which the Participant’s death occurs.

After Retirement:

In the event a Participant dies after his Retirement but prior to receiving benefits under the Plan, the Company shall commence distribution of the Participant’s Deferral Account(s) to the Participant’s designated beneficiary(ies). Such payments will be made in the same form as elected (i.e., lump sum or installment) but will commence as soon as administratively feasible but no later than 30 days after the month in which the Participant’s death occurs. Where a Participant who is receiving benefits dies, the Company shall continue to make distributions to the Participant’s designated beneficiary(ies) in accordance with the method selected by the Participant.

In the event that a Participant (or in the case of the Participant’s death, his beneficiary) suffers a Financial Hardship, the Company may, if it deems advisable in its sole and absolute discretion, distribute on behalf of the Participant, his beneficiary or his legal representative, any portion of the Participant’s Deferral Account(s), but in no event more than the amount reasonably necessary to relieve the Financial Hardship upon which the request is based, plus the federal and state taxes due on the withdrawal, as determined by the Company. Any such hardship distribution shall be made at such times as the Company shall determine, and the Participant’s Deferral Account(s) shall be reduced by the amount so distributed and/or utilized. Financial Hardship means a severe financial hardship to a Participant resulting from an illness or accident of the Participant, his or her spouse or a dependent (as defined in Code Section 152(a)) of the Participant, loss of the Participant's property due to casualty, or other similar extraordinary and unforeseeable circumstances arising as a result of events beyond the control of the Participant.

The Participant shall designate in writing, on a form approved by the Company, one or more primary and/or secondary beneficiaries who shall receive distributions otherwise payable to the Participant or as otherwise authorized by the Plan, and such beneficiary designation shall be controlling with respect to all Deferral Accounts such Participant may have pursuant to

If no designation of beneficiary has been received by the Company from the Participant prior to his death, or if the beneficiary(ies) designated by the Participant has not survived the Participant or cannot otherwise be located by the Company within a reasonable period of time, distributions shall be made to the person or persons in the first of the following classes of successive preference:

The Participant’s surviving spouse.

The Participant’s surviving children, equally.

The Participant’s surviving parents, equally.

The Participant’s surviving brothers and sisters, equally.

The Participant’s personal representative(s), executor(s) or administrator(s).

Whenever, in the Company’s opinion, a person entitled to receive any payment under the Plan is a minor, is under a legal or other disability or is so incapacitated as to be unable to manage his financial affairs, a distribution may be made to such person or to his legal representative or to a relative or friend of such person for his benefit, or for the benefit of such person in whatever manner the Company considers advisable. Any payment of a benefit in accordance with the provisions of this Section shall be a complete discharge of any liability for the making of such payment under the provisions of the Plan.

Except as specified otherwise in the Plan, the Company shall have full power and discretion to administer, construe and interpret the Plan. Any authorized action or decision under the provisions of the Plan undertaken by the Company arising out of, or in connection with the administration, construction, interpretation or effect of the Plan, or recommendations in accordance therewith, or any rules and regulations adopted by the Company shall be conclusive and binding on all Participants and their beneficiaries and all other persons whosoever.

Right of Setoff: If, at such time as the Participant becomes entitled to distributions hereunder, the Participant has any debt, obligation or other liability representing an amount owing to Ameren, and if such debt, obligation, or other liability is due and owing at the time that distributions are payable hereunder, the amount owed or owing may be offset against the amount otherwise distributable hereunder.

No Trust Created: The arrangements hereunder are unfunded for tax purposes and for the purposes of ERISA, Title I. Nothing contained in the Plan, and no action taken pursuant to its provisions shall create, or be construed to create, a trust, escrow of any kind, or a fiduciary relationship between Ameren and the Participant, his designated beneficiary(ies), other beneficiaries of the Participant or any other person.

Unsecured General Creditor Status: Distributions to the Participant or his designated beneficiary(ies) or any other beneficiary(ies) hereunder shall be made from assets which prior to distribution shall continue, for all purposes, to be a part of the general corporate assets and no person (including Participants) shall have any interest in such assets of Ameren, including without limitation the proceeds of life or other insurance policies, by virtue of the provisions of the Plan. To the extent that any person, including the Participant, acquires a right to receive distributions under the provisions hereof, such right shall be no greater than the right of any unsecured general creditor of Ameren and the obligation to pay constitutes a mere promise of Ameren to make payments in the future.

Recovery of Costs: In the event that the Company purchases an insurance policy or policies insuring the life of a Participant or any other property to allow Ameren to recover the costs of providing deferred compensation in whole or in part, hereunder, neither the Participant, his beneficiary(ies) nor any other person or persons shall have any rights therein whatsoever. Ameren shall be the sole owners and beneficiaries of any such insurance policy and shall possess and may exercise all incidents of ownership therein.

Protective Provisions: A Participant shall cooperate with the Company by providing all information requested including a medical history. In connection therewith, the Company reserves the right to require that the Participant submit to a physical examination if such examination is deemed to be necessary or appropriate. The costs of all such physical examinations will be paid by the Company. If the Participant refuses to cooperate with the Company, the Company shall have no further obligation to the Participant under the provisions of the Plan. If the Participant makes any material misstatement of information or non-disclosure of medical history, then no benefits shall be payable to the Participant or his beneficiary(ies) over and above actual Salary deferrals.

No Contract of Employment: Nothing contained herein shall be construed to be a contract of employment for any term of years, nor a conferring upon the Participant the right to continue to be employed in his present capacity, or in any capacity. It is expressly understood that the Plan relates to the payment of deferred compensation

Spendthrift Provisions: Neither the Participant, his beneficiary(ies), nor any other person or persons shall have any power or right to sell, alienate, attach, garnish, transfer, assign, anticipate, pledge or otherwise encumber any part or all of a Deferral Account maintained or distributable hereunder. No amounts hereunder shall be subject to seizure by any creditor of the Participant or a beneficiary, beneficiary(ies) or any other person or persons by a proceeding at law or in equity, nor shall such amounts be transferable by operation of law in the event of divorce, legal separation, bankruptcy, insolvency or death of the Participant, his beneficiary(ies), or any other person or persons. Any such attempted assignment or transfer shall be null and void.

Withholding Taxes: To the extent required by the law in effect at the time that deferrals are made hereunder, the Company shall withhold from non-deferred compensation the payroll taxes required to be withheld by the federal or any state or local government.

Suspension, Termination and Amendment: The Board of Directors of Ameren Corporation shall have the power to suspend or terminate the Plan in whole or in part at any time, and from time-to-time to extend, modify, amend or revise the Plan in such respects as the Board of Directors by resolution may deem advisable, provided that (1) no such extension, modification, amendment or revision shall deprive a Participant, or any beneficiary(ies) thereof, of any part or all of the Participant’s Deferral Account and (2) no attempt to terminate the Plan shall be effective unless such termination complies with the restrictions and requirements applicable under Code Section 409A and the regulations promulgated thereunder in effect at the time of such termination.

Conflicts: Any conflict in the language or terms or interpretation of the language or terms of the Plan between this Plan document and any other document which purports to describe the rights, benefits, duties or obligations of any Participant, Ameren or any other person or entity shall be resolved in favor of this Plan document.

Validity: In the event any provision of the Plan is held invalid, void, or unenforceable, the same shall not affect, in any respect whatsoever, the validity of any other provision of the Plan.

Captions: The captions of the articles and sections of the Plan are for convenience only and shall not control nor affect the meaning or construction of any of its provisions.

Gender and Plurals: Wherever used in the Plan, words in the masculine gender shall include masculine or feminine gender, and, unless the context otherwise requires, words in the singular shall include the plural, and words in the plural shall include the singular.

Notice: Any election, beneficiary designation, notice, consent or demand required or permitted to be given under the provisions of the Plan shall be in writing and shall be signed by the Participant. If such election, beneficiary designation, notice, consent or demand is mailed by a Participant, it shall be sent by United States Certified Mail, postage prepaid, and addressed to the chief human resources officer, Ameren Services Company, P. O. Box 66149, St. Louis, Missouri 63166-6149. The date of such mailing shall be deemed to be the date of such notice, consent or demand.

Governing Law: The Plan, and the rights of the parties hereunder, shall be governed by and construed in accordance with the laws of the State of Missouri.

Disputes: A Participant who believes that he is being denied a benefit to which he is entitled (hereinafter referred to as “Claimant”), or his representative, may file a written request for such benefit with the Plan Administrator of the Plan setting forth his claim. The request must be addressed to: Ameren Services Company, Employee Benefits Department, P.O. Box 66149, MC 533, St. Louis, Missouri 63166-6149, Attention: Plan Administrator, Deferred Compensation Plan.