City of Austin says "we'll buy all the power you can generate" to 100MW wood-fired plant in deal that will see almost a fifth of the city's energy come from renewables

Sarah Palin criticised by environmentalists over support for oil drilling and opposition to Polar Bear being included on Endangered Species List

As pressure for transparent carbon reporting grows, US energy giant agrees to disclose analysis of climate risks arising from new coal-fired power plant

New underground compressed air technology could be used to store energy from wind farms, enabling a steadier power supply

PowerGenix claims its cheaper alternatives to lithium ion cells are safe to "puncture with nails, run over, or put in a fire"

Supply deal with Nitol Solar expected to ease continuing concerns over polysilicon shortages

Company frustrated over slow progress of US Environmental Protection Agency's energy efficient PC and notebook labelling scheme

Chicago Climate Exchange begins trading futures in first US cap-and-trade scheme

Networked smart meters aim to cut energy use and help homes and businesses sell renewable energy back to the grid

Green groups push for pika to be included on endangered species list as falling snow levels have an impact on its native environment