FT Energy Source Energy headlines: Opec sits tight

- Opec leaves production levels unchanged – FT

- Opec members seek $100-a-barrel oil – Bloomberg

- Global oil production still going sideways – Early Warning

- Essar plans $2bn Nigeria investment – FT

- Sirius raises £15.7m to fund Nigerian oil field – The Telegraph

- Lukoil to drill offshore Ghana – Argus

- Occidental overhauls pay structure – FT

- Green energy opportunities return after dismal year – Reuters

- Electric cars pose riddle for EPA – New York Times

- Rajendra Pachauri to stay as IPCC pledges reforms – The Guardian