IT giant signs up its first smart meter partner, providing users of its new PowerMeter service with the ability to constantly track their energy use

California and Nevada lead the way with over 6GW of power in development

Agency wants greater power to force businesses to disclose information on the potentially hazardous chemicals they use

New figures show sales of green cars fell sharply following end of scrappage incentive scheme

Large permitting producers to account for their greenhouse gas emissions

Legislation outstrips Waxman-Markey with proposal for 20 per cent emission cuts by 2020

Huge increase in state funding to help cut building energy bills and accelerate development of zero-carbon properties

Just days after Ontario confirms feed-in tariff incentives, leading utility acquires giant 4.4GW Great Lakes wind farm project

Republican primary candidate says she will roll back climate change legislation if elected to replace Arnold Schwarzenegger

Battery manufacturer sees share price soar 50 per cent on first day of trading, giving it a market cap of $1.9bn despite having never posted a profit