ENGIE

Regulatory Filings • Sep 10, 2009

GDF SUEZ doubles its Astoria power plant capacity in New York City

GDF SUEZ has signed an agreement to expand the production capacity of its power plant in the Queens Borough of New York City. Astoria Energy II, the new natural gas-fired power plant, will have a generating capacity of 575 megawatts. GDF SUEZ has a 30% interest in the project, which investment is estimated at more than \$1 billion. The closing of the project financing was achieved this summer. Construction of the new facility is expected to be completed mid-2011. Astoria I & II will have a total generating capacity of 1,150 MW.

Astoria Energy II will strengthen GDF SUEZ's participation in the New York power market, which the Group entered when it purchased a 30.45% interest in the 575 MW Astoria Energy I power plant in May 2008. New York is one of four critical North American markets for GDF SUEZ, along with the New England, Texas, and Mid-Atlantic States markets. Upon completion of Astoria Energy II, GDF SUEZ will own an interest in a total of 1,267 MW in New York market. The Group also has ownership interests in Rochester, Syracuse, and Nassau County power stations.

"From both our North American and our global approach to market expansion, developing an enhanced and strategic presence in New York City is a primary objective," explained Gérard Mestrallet, Chairman and Chief Executive Officer of GDF SUEZ during a visit today to the facility. "When we acquired our initial stake in Astoria Energy last year, the expansion of the project on the adjoining site was, of course, an attractive selling point in the deal. It is a much-anticipated achievement for us to be moving ahead on this expansion."

The Astoria Energy II facility has a 20-year contract with the New York Power Authority for the whole new power plant's generating capacity. The facility will provide power to several municipal customers, including the City of New York, the Metropolitan Transportation Authority, the Port Authority of New York and New Jersey, the New York City Housing Authority, and the New York State Office of General Services.

GDF SUEZ has sustainable positions in power generation, natural gas and retail electricity in the United States, with strongholds in Northeast and Texas. One of the top LNG importer in the US, GDF SUEZ is serving 20% of New England's natural gas demand. Second US electricity retailer, GDF SUEZ has a power generation capacity of nearly 7,000 MW and is the third largest biomass player in the country.

One of the leading energy providers in the world, GDF SUEZ is active across the entire energy value chain, in electricity and natural gas, upstream to downstream. It develops its businesses (energy, energy services and environment) around a responsible-growth model to take up the great challenges: responding to energy needs, ensuring the security of supply, fighting against climate change and maximizing the use of resources. GDF SUEZ relies on diversified supply sources as well as flexible and high-performance power generation in order to provide innovative energy solutions to individuals, cities and businesses. The Group employs 200,000 people worldwide and achieved revenues of €83.1 billion in 2008. GDF SUEZ is listed on the Brussels, Luxembourg and Paris stock exchanges and is represented in the main international indices: CAC 40, BEL 20, DJ Stoxx 50, DJ Euro Stoxx 50, Euronext 100, FTSE Eurotop 100, MSCI Europe and ASPI Eurozone.

Press contact:

Tel France: +33 (0)1 57 04 24 35 Tel Belgium: +32 2 510 76 70 E-Mail: gdfsuezpress@gdfsuez.com Investor Relations contact: Tel: +33 (0)1 57 04 66 29 E-Mail: ir@gdfsuez.com

GDF SUEZ CORPORATE HEADQUARTERS 22, rue du Docteur Lancereaux - 75392 Paris Cedex 08 - France Tel. +33 (0)1 57 04 00 00 GDF SUEZ - SA AU CAPITAL 2,259,627,708 EUROS - RCS PARIS 542 107 651 www.gdfsuez.com