From a new energy secretary to keeping the news coming when the lights go out, we run down the key lessons of the week
Increase of 52 per cent to $10.3bn in 2011 was based on strong solar performance
Government body orders all domestic airlines and large airports to monitor CO2 output ahead of possible national registry
New government-backed company tasked with accelerating rollout of giant solar projects
The deadlock in Durban raises the prospect of a two tier response to climate change
Emerging economies insist industrialised nations must extend Kyoto Protocol and step up climate aid before talks can begin on parallel treaty
General Electric Financial Services and Greenko sign $115m wind energy deal
Indian wind farm developer reveals plans to add up to 300MW of new renewables capacity each year
Pilot scheme aims to help developing world customers access solar systems without paying high upfront costs