ENGIE

Earnings Release • Dec 29, 2008

Successful Southern North Sea exploration well

GDF SUEZ and its license partner, First Oil Expro Ltd, are pleased to announce a new gas discovery in the Southern Basin sector of the United Kingdom Continental Shelf. The 47/14b-10 "Juliet" well is located to the south of the Amethyst gas field, about 40 km due east of the Humber Estuary. Drilled using the Noble Piet van Eide to a total depth of 9,502 feet, the well has flowed at rates of up to 38 million standard cubic feet per day.

Commenting on the news, René Montaz-Rosset, GDF SUEZ E&P UK Ltd's Managing Director said:

"This discovery, which is in a new area for GDF SUEZ, represents a continuation of our high success rate for exploration drilling in the Southern North Sea. Since 2001 we have operated or participated in 11 wells with a 91% commercial success rate. The forward plan for Juliet is to evaluate the development options during the first half of 2009 with the possibility of first gas in late 2010 or early 2011".

Notes:

GDF SUEZ is operator of the P.614 (Block 47/14b) license with a net equity interest of 51.56%. First Oil has a net equity of 48.44%.

GDF SUEZ E&P UK Ltd, previously GDF Britain Ltd, is a wholly owned oil and gas exploration and production subsidiary of the GDF SUEZ Group, active in the UK.

GDF SUEZ E&P UK Limited Contact:

Tel: +44 (0)20 7067 4400

GDF SUEZ Press contact: Tel France: +33 (0)1 57 04 24 35 Tel Belgium: +32 2 510 76 70 E-Mail: gdfsuezpress@gdfsuez.com

GDF SUEZ Investor Relations contact:

Tel: +33 (0)1 57 04 66 29 E-Mail: ir@gdfsuez.com

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 196,500 people worldwide and achieved revenues of €74,3 billion in 2007. 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.

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 WITH A CAPITAL OF 2,191,532,680 EUROS - RCS PARIS 542 107 651 www.gdfsuez.com