Leading solar firms report better-than-expected financial performance

Democrat senator unveils new clean energy bill that will focus on the carrot rather than the stick

Councils will be free to sell energy to the grid from next week

Company reports widening losses for the second quarter as global expansion plans accelerate

Rival organisation Chambers for Innovation and Clean Energy aims to promote environmental regulations opposed by US Chamber of Commerce

Canadian geothermal firm angers politicians and pop stars with plan to acquire Icelandic energy supplier

Solar firm buys its way into energy-efficient lighting sector with $58m purchase of Crystal Systems

Memorandum signed with Energy Department to use more renewables

Scottish company hints it could welcome takeover bid from EDP Renováveis

Appeals court rules that Superfund polluter-pays scheme does not violate constitutional rights