Investment

Carriers will have to buy permits for every tonne of CO2 emitted on flights into and out of EU airports

Owner of Scottish Power agrees to buy 50 per cent of its wind turbines from Gamesa up to a limit of 3,800MW

Norwegian company poised to take a 74.3 per cent stake in Dutch energy analysts to boost expertise in energy infrastructure

Oil giant insists it remains committed to alternative energy division and is on track to invest $8bn in green technology by 2015

Scheme will go ahead from January 1 after case brought by US airlines is dismissed

European Court decision will follow preliminary ruling rejecting US complaints over aviation's inclusion in the EU emissions trading scheme

Search giant reveals annual investment in clean energy is approaching $900m

Rotherham-based waste treatment and biofuel firm reveals plans to launch an IPO to support expansion plans

Majority of MEPs vote in favour of plan to restrict supply of EU carbon allowances from 2013

Measures could be taken to reduce oversupply in the market when Denmark takes on six-month EU leadership from January