FT Energy Source Energy headlines: Macondo companies sue each other

- BP sues Transocean for $40bn – The Telegraph

- Cameron responsible for blowout, says BP – Bloomberg

- Gulf drilling delays fails to stem US oil flow – FT

- Chevron’s vote of confidence in deepwater drilling – FT

- Small companies stay in gulf’s deep waters – WSJ

- Fossil fuel firms use ‘biased’ study in shale lobbying – The Guardian

- Fracking firm battles to woo English villagers – The Guardian

- BHP Billiton lowers oil production outlook – FT

- Iraq to announce fourth oil bidding round on Monday – WSJ

- Deadlock over Iran oil and gas takes toll – FT

- Putin tells BP to make peace with oligarchs – The Times

- Exxon chief on supply, demand and $120 crude – FT

- Unreliable data help roil oil markets – WSJ

- Exxon sees nuclear power holding its own – FT

- RWE in warning about plant stoppages – FT

- Radioactive spills and breakdowns at British nuclear plants – The Guardian

- Japan bans entry into Fukushima evacuation zone – BBC

- Japan: More than a moment – FT

- Former Massey CEO paid $10.4m – WSJ

- Origin trading halted ahead of LNG announcement – Argus

- Green energy: California dreaming – FT Lex

- PV cells turn windows into solar panels – NY Times Green blog