ft.com/energyfilter

On Monday night, Eon, Enel and Acciona announced a shock ceasefire (may require ft.com subscription) in the battle to control Endesa, Spain’s biggest energy group. Eon agreed to drop its bid, clearing the way for Enel and Acciona to make an offer. In return, Eon will be allowed to buy a chunk of Endesa’s assets worth around Euros10bn, giving the German group an entry into several new markets. Analysts are saying that this is a good outcome for Eon, and Platts is today looking at who could be Eon’s next target.

The Supreme Court has ruled 5-4 that the Bush administration must consider regulating carbon dioxide emissions, Greenwire reported today. The ruling is a victory for the 11 states that sued the Environmental Protection Agency to force it to regulate greenhouse emissions from new cars and trucks. The case, Massachusetts v. EPA marks the first time the high court has considered the legal questions surrounding the regulation of heat-trapping greenhouse gases, Greenwire states.

Big oil companies are making it difficult for ethanol to be sold at their petrol pumps, writes the Wall Street Journal. The rub is that the ethanol is not their own product. However, despite the support of farmers, the US President and automakers, the alternative fuel has more than unfriendly petrol station franchisers to overcome.