GDF Suez S.A. is a French multinational electric utility company, headquartered in Paris.
In July 2008 the energy division of Suez merged with French state energy company Gaz de France, creating GDF Suez. In one fell swoop the merger created 'the world's fourth largest energy utility by market capitalization, behind Russia's Gazprom, France's EDF and Germany's E.ON. The combined revenues of Suez and Gaz de France were about $117 billion, with earnings of almost $8.85 billion'. Suez Environment, the water and waste division is 35% part owned by GDF Suez, as such there is quite an overlap on the board of Suez Environment from that of GDF Suez.
GDF Suez is a partner in the UK nuclear energy consortium NuGen, which is developing plans to build a new nuclear power station in West Cumbria near Sellafield.
In November 2010 GDF Suez met with Chris Huhne, Secretary of State for Energy and Climate Change, to discuss electricity market reform, along with Independent Generators' Group, International Power, DONG UK, Eggborough Power Ltd, Draw Power Ltd, Intergen, and ConocoPhillips.
In May 2011 GDF Suez met with Justine Greening Economic Secretary to the Treasury and James Sassoon, Commercial Secretary to the Treasury, to discuss energy issues. A month later in June 2011, the company met with Charles Hendry, Minister of State in the Department of Energy and Climate Change for a discussion on energy policy. 
- Chris Eales, Alan Kovski, 'New French energy giant GDF Suez officially launched following merger of GDF and Suez', Global Power Report (July 24 2008)
- Give ref and note which people overlap?
- GDF Suez , Who's Lobbying, undated, acc 21 June 2012