Appendix 3Y Mark Johnson

Change of Director’s Interest Notice

Information or documents not available now must be  given to ASX as soon as available.  Information and documents given to ASX become ASX's property and may be made public.

Introduced 30/9/2001.

Name of entity AGL ENERGY LIMITED
ABN 74 115 061 375

We (the entity) give ASX the following information under listing rule 3.19A.2 and as agent for the director for the purposes of section 205G of the Corporations Act.

Name of Director MARK RODERICK GRANGER JOHNSON
Date of last notice 9 APRIL 2010

Part 1 - Change of director’s relevant interests in securities

In the case of a trust, this includes interests in the trust made available by the responsible entity of the trust
Note: In the case of a company, interests which come within paragraph (i) of the definition of “notifiable interest of a director” should be disclosed in this part.

Direct or indirect interest DIRECT
Nature of indirect interest
(including registered holder)
Note: Provide details of the circumstances giving rise to the relevant interest.

Date of change 30 SEPTEMBER 2010
No. of securities held prior to change DIRECT - 59,125
Class ORDINARY SHARES
Number acquired 1,113
Number disposed NIL
Value/Consideration $15.95 per share
 No. of securities held after change
DIRECT - 60,238
Nature of changeExample: on-market trade, off-market trade, exercise of options, issue of securities under dividend reinvestment plan, participation in buy-back. AGL DIVIDEND REINVESTMENT PLAN

Part 2 - Change of director’s interests in contracts
Note: In the case of a company, interests which come within paragraph (ii) of the definition of 'notifiable interest of a director' should be disclosed in this part

Detail of contract
/td>
Nature of interest
Name of registered holder
(if issued securities)
Date of change
which interest related prior to change
Note: Details are only required for a contract in relation
to which the interest has changed

Interest acquired
Interest disposed Value/Consideration
Note: If consideration is non-cash, provide details and an estimated valuation

Interest after change

About AGL

AGL is one of Australia's leading integrated renewable energy companies and is taking action toward creating a sustainable energy future for our investors, communities and customers. Drawing on 175 years of experience, AGL operates retail and merchant energy businesses, power generation assets and an upstream gas portfolio. AGL has one of Australia's largest retail energy and dual fuel customer bases. AGL has a diverse power generation portfolio including base, peaking and intermediate generation plants, spread across traditional thermal generation as well as renewable sources including hydro, wind, landfill gas and biomass. AGL is Australia's largest private owner and operator of renewable energy assets and is looking to further expand this position by exploring a suite of low emission and renewable energy generation development opportunities.