USA

A programme that aims to source 50 per cent of fuel from renewable sources by 2020 is set to transform how the world's military operates

City power company to replace electricity supply with renewables, energy efficiency, and natural gas

Bank to provide 'a significant amount' of debt capital for USA's first offshore wind farm, as campaigners call on government to grant loan guarantee

Revamped carmaker set to unveil new all-electric sports car early next month with further models starting production in 2014

Bloomberg New Energy Finance report finds 'larger than expected' wind and bioenergy contribution in US and Brazil

President urges Congress to back plan for $200m a year green car funding, but fears mount of Keystone approval and delays to EPA rules

Battle in Congress looms, as president prepares to unveil ambitious new clean energy masterplan

Department of Interior approves three of the largest renewable energy projects in US history

Clean Edge analysis finds biofuels, wind and solar power grew total revenues by one per cent last year

Car buyers and dealerships to be offered discounts on the upfront cost of installing solar panels