ACUITY BRANDS, INC. 2002 SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

EXHIBIT 10(iii)A(63)

ACUITY BRANDS, INC.

2002 SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

(Effective As of January 1, 2003)

(As Amended and Restated Effective As of January 1, 2005, except where otherwise noted)

ACUITY BRANDS, INC.

2002 SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

PREAMBLE

The Acuity Brands, Inc. 2002 Supplemental Executive Retirement Plan (“Plan”) is designed to be a supplemental retirement plan covering a select group of management and highly compensated employees of Acuity Brands, Inc. (the “Company”) and its Subsidiaries. The benefits under the Plan are unfunded and all amounts payable under the Plan shall be paid from the general assets of the Employer which employs the Participant. The effective date of the amended and restated Plan as set forth herein is January 1, 2005 (“Effective Date”), except where otherwise noted.

TABLE OF CONTENTS

i

ii

[SCHEDULE 1]

[APPENDICES]

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ARTICLE I

DEFINITIONS AND CONSTRUCTION

1.1 Definitions : Where the following words and phrases appear in this Plan, they shall have the meanings set forth below, unless the context clearly indicates to the contrary:

(a) Accrued Benefit : With respect to any Participant at any time a monthly benefit payable for 180 months only, commencing on the Participant’s Normal Retirement Date in an amount equal to the product of 1.6% of the Participant’s Average Annual Compensation multiplied by the Participant’s Years of Credited Service up to a maximum of ten (10) years, divided by twelve (12). The maximum number of Years of Credited Service a Participant can accrue under the Plan is ten (10) years, provided that Compensation earned after a Participant has completed ten (10) Years of Credited Service shall be counted for purposes of determining the Participant’s Accrued Benefit if counting such Compensation would increase the Participant’s Accrued Benefit.

Notwithstanding the foregoing, if a Participant who received a distribution or distributions following his Termination Date or Retirement is re-employed and again becomes an active Participant, such Participant’s Accrued Benefit, as computed pursuant to this Section, shall be reduced by the monthly Accrued Benefit amount that is the Actuarial Equivalent of the distribution(s) made to the Participant.

Effective January 1, 2005, the Participant’s Accrued Benefit shall, for certain purposes under the Plan as indicated under the appropriate section, be divided between his Pre-Section 409A Benefit and his Section 409A Benefit. Except as indicated in such specific sections, the Participant’s Accrued Benefit shall be treated as a single benefit.

(b) Act : Public Law No. 93-406, the Employee Retirement Income Security Act of 1974, as amended from time to time.

(c) Actuarial (or Actuarially) Equivalent : A benefit of equivalent value determined using an interest rate equal to 7% per annum and the mortality table prescribed by the Commissioner of Internal Revenue pursuant to Rev. Rul. 95-6 (as hereafter amended or modified).

(d) Administrator : The Company and any person or committee designated by the Company to perform all or a portion of the duties and responsibilities of the Administrator under the Plan.

(e) Authorized Leave of Absence : Any absence authorized by the Company under the Company’s standard personnel practices, provided that the Participant returns within the period specified in the Authorized Leave of Absence.

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(f) Annual Bonus : The amount awarded an Executive under the Company’s annual bonus program, subject to the provisions and limitations contained in Section 1.1(l) of the Plan.

(g) Average Annual Compensation : The applicable annual amount shall be the average of the Participant’s Compensation for the three highest, consecutive calendar years during the ten years immediately preceding the Participant’s date of Retirement, death or other termination of employment. Compensation earned after a Participant has completed ten (10) Years of Credited Service shall be counted for purposes of determining the Participant’s Average Annual Compensation and Accrued Benefit if counting such Compensation would increase the Participant’s Accrued Benefit.

(h) Beneficiary : The person or persons last designated in writing by the Participant on a form provided by the Administrator to receive benefits under Section 3.7 or Article IV of the Plan in the event of the Participant’s death. If no designation of Beneficiary shall be in effect at the time of a Participant’s death or if all designated Beneficiaries shall have predeceased the Participant, then the Beneficiary shall be the Participant’s Surviving Spouse or if there is no such Surviving Spouse, the Participant’s estate or legal representative.

(i) Board : The Board of Directors of Acuity Brands, Inc. or its Executive Committee.

(j) Break in Service : An event which results in the cancellation of a Participant’s previous Credited Service as provided in Section 2.2.

(k) Company : Company shall mean Acuity Brands, Inc. (or its successor or successors). Affiliated or related employers are permitted to adopt the Plan with the consent of the Company and shall be known as “Adopting Employers.” To the extent required by certain provisions (e.g., determining Average Annual Compensation and Credited Service), references to the Company shall include the Adopting Employer of the Participant. Adopting Employers are listed on Schedule 1.

(l) Compensation : Subject to adjustment as provided in the next sentence, “Compensation” shall be the Participant’s salary and wages for each calendar year during which he is employed as an Executive Officer of the Company, and any Annual Bonuses awarded during such year. In either case, Compensation and Annual Bonuses shall include any amounts which shall be voluntarily deferred by the Participant under any salary or bonus deferral or reduction program (whether qualified or non-qualified) which may be instituted by the Company, but shall not include any earnings or Company match on these deferred amounts, or payments from such programs or payments from any similar salary deferral or bonus deferral programs, or any income from stock options, restricted stock or similar grants. A Participant’s Compensation and Annual Bonuses for calendar years prior to the Effective Date during which he was employed as an Executive Officer shall be credited under this Plan.

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(m) Credited Service : A Participant shall accrue one (1) Year of Credited Service for each Plan Year during which he is actively employed as an Executive Officer of the Company for the full Plan Year. During the Participant’s initial and final Plan Year as an Executive Officer, the Participant will be credited with a decimal equivalent expressed to two places of a fraction having a numerator equal to the number of full months the Participant worked as an Executive Officer during such Plan Year and a denominator of twelve (12). A Participant’s Credited Service as an Executive Officer prior to the Effective Date shall be credited under this Plan. The maximum number of Years of Credited Service a Participant can accrue under the Plan is ten (10).

(n) Disability Retirement Date : The Date of Retirement due to Disability as specified in Section 3.4.

(o) Early Retirement Date : The first day of the month following the Participant’s attainment of age 55 and completion of three (3)Years of Credited Service.

(p) Effective Date : The effective date of the amended and restated plan is January 1, 2005, except where otherwise noted. The Plan was initially effective as of January 1, 2003.

(q) Executive Officer : Any person who, on or after the Effective Date, is classified by the Company as an executive officer of the Company and who is receiving remuneration for personal services rendered to the Company (or would be receiving such remuneration except for an Authorized Leave of Absence), and any other officer of the Company (or an Adopting Employer) designated by the Board as eligible to participate in the Plan and who is listed on an Appendix attached hereto.

(r) Fiduciaries : The Company and the Administrator, but only with respect to the specific responsibilities of each for Plan administration, all as described in Article VI.

(s) Late Retirement Date : The date of Retirement subsequent to a Participant’s Normal Retirement Date as specified in Section 3.2.

(t) Normal Retirement Date : The first day of the month following the Participant’s attainment of age 60.

(u) NSI : National Service Industries, Inc., a Delaware corporation, and the corporation from which the Company was spun-off on November 30, 2001.

(v) Participant : An Executive Officer participating in the Plan in accordance with the provisions of Section 2.1.

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(w) Plan : The Acuity Brands, Inc. 2002 Supplemental Executive Retirement Plan, the Plan set forth herein, as amended from time to time.

(x) Plan Year : A twelve (12) month period beginning on January 1 and ending on December 31.

(y) Prior Plan : The Acuity Brands, Inc. Supplemental Retirement Plan for Executives in which certain participants in this Plan previously participated.

(z) Retirement : Termination of employment for reason other than death after a Participant has fulfilled all requirements for Normal Retirement, Late Retirement, Early Retirement, or Disability Retirement. Retirement shall be considered as commencing on the day immediately following a Participant’s last day of employment (or Authorized Leave of Absence, if later).

(aa) Surviving Spouse . The individual to whom a Participant is legally married on the date of death.

(bb) Termination Date : The date of termination of an Executive’s employment with the Company for reasons other than death or Retirement.

(cc) Total and Permanent Disability : A physical or mental incapacity which impairs the Participant’s ability to substantially perform his usual duties and services for the Company for a period of six (6) months. The determination of Total and Permanent Disability shall be made by the Administrator in its discretion based upon the information provided to it and, with respect to a Participant’s Section 409A Benefit, shall be made in a manner consistent with the requirements of Section 409A.

(dd) Vested Terminee : A Participant whose Termination Date occurs after the completion of at least three (3) Years of Credited Service, but prior to achieving eligibility for Retirement.

(ee) Pre-Section 409A Benefit : The vested accrued benefit of the Participant determined as of December 31, 2004 in accordance with rules established by the Administrator consistent with the requirements of Section 409A.

(ff) Section 409A : Section 409A of the Internal Revenue Code of 1986, as amended, and the regulations and rulings thereunder.

(gg) Section 409A Benefit : The Participant’s total Accrued Benefit under the Plan minus the Participant’s Pre-Section 409A Benefit.

1.2 Construction : The masculine gender, where appearing in the Plan, shall be deemed to include the feminine gender, and the singular may include the plural, unless the context

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clearly indicates to the contrary. The words “hereof,” “herein,” “hereunder” and other similar compounds of the word “here” shall mean and refer to the entire Plan, not to any particular provision or Section.

ARTICLE II

PARTICIPATION, CREDITED SERVICE,

AND BREAK IN SERVICE

2.1 Eligibility for Participation :

(a) In General - An Executive Officer shall become a Participant in this Plan on the later of the Effective Date or the date he became an Executive Officer, subject to the conditions and limitations provided for herein, provided that James Balloun shall not be eligible to participate in this Plan. Unless otherwise approved by the Board or unless the Executive Officer has waived all benefits under such plan, an Executive Officer who is a participant in the Acuity Brands, Inc. Supplemental Retirement Plan for Executives shall not be eligible to become a Participant in this Plan.

A former Participant who is rehired may again become a Participant upon again fulfilling the above requirements.

(b) Special Eligibility - Any Executive Officer designated on an Appendix attached hereto shall be eligible to participate in Plan on the date specified in the Appendix and in accordance with the conditions and limitations provided in such Appendix.

2.2 Break in Service : A Participant shall incur a Break in Service as the result of the occurrence of a Termination Date or Retirement. Upon incurring a Break in Service, a Participant’s rights and benefits under the Plan shall be determined in accordance with his Credited Service and Average Annual Compensation, and other applicable Plan provisions at the time of the Break in Service. If a Participant who has incurred a Break in Service is later rehired by the Company and becomes eligible to participate in the Plan, his prior Years of Credited Service shall only be counted for purposes of determining his Accrued Benefit subsequent to rehire, if (i) at the time of his Break in Service he had at least three (3) Years of Credited Service or was at least age 60, or (ii) the period of his Break in Service is less than his prior Years of Credited Service. If the Participant received payments from the Plan during his Break in Service period, his Accrued Benefit shall be adjusted in the manner provided in Section 1.1(a).

2.3 Participants Bound : Each Executive Officer becoming a Participant hereunder shall be conclusively presumed for all purposes to have consented to this Plan and any amendments, modifications or revisions hereto, and to all the terms and conditions thereof, and shall be bound thereby with the same force and effect as if he had entered into a contract to such effect and any amendments, modifications or revisions hereto.

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2.4 Transfers : The following rules shall apply when an Executive Officer transfers to or from an Executive Officer position in the Company:

(a) When Employee Becomes Executive Officer : An employee of the Company who becomes an Executive Officer of the Company, will become a Participant under this Plan in accordance with Section 2.1. The Executive Officer’s Compensation for periods prior to the date he becomes a Participant in the Plan shall count for purposes of this Plan, but his service with the Company or any affiliated employer shall not be credited as Years of Credited Service unless otherwise provided in an Appendix applicable to such Participant.

(b) Accrued Benefit Upon Transfer To A Non-Eligible Status : If a Participant is transferred to a non-eligible status of employment within the Company, his Accrued Benefit under this Plan will be determined as though his transfer were a termination of employment, and the date of such termination of employment will be deemed to be the date of his transfer. A Participant shall not be eligible to receive benefits from this Plan until the Participant terminates employment with the Company and all affiliated employers. A former Participant’s Compensation and service after the date of transfer shall not be counted for any purposes under this Plan unless otherwise provided in an Appendix applicable to such former Participant.

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ARTICLE III

RETIREMENT AND TERMINATION DATES

3.1 Normal Retirement Benefit : A Participant may retire on his Normal Retirement Date, on which date he shall be fully vested, and his Accrued Benefit shall commence as of his Normal Retirement Date. The Participant’s monthly benefit shall be his Accrued Benefit and shall