FT Energy Source Energy headlines: EDF strives to save project

- EDF offers to buy out Constellation – FT

- Opec ministers to keep production target unchanged – Argus

- North Sea oil companies angry at new EU rules – The Telegraph

- Treasury locked in battle over green investment bank – The Guardian

- Occidental set to replace chief – FT

- Solar spat flares over subsidies for solar-panel installations – WSJ

- Oil drilling and the Senate clinch hold – NY Times Green blog

- Wall Street lobbyists besiege CFTC over derivatives trading – Bloomberg

- EPA raises limit for ethanol blend in petrol – FT

- EPA decision angers… just about everyone – Fuel Fix

- Potash and BHP woo Saskatchewan – FT

- Rockhopper shares tumble on Falklands doubts – The Telegraph