After months of speculation, the secretive fuel cell company that spun out of Nasa's Mars exploration programme will tomorrow unveil its Bloom Box system
Major shareholder withdraws support for deal, as both firms downplay impact of failed merger
Flow battery developer secures $3.5m in fresh funding to help make grid-scale energy storage a reality
Electro Power System's zero-emission backup power fuel cell promises to produce its own hydrogen, allowing off-grid facilities to operate using renewable energy alone
Founding member of Western Climate Initiative quits carbon trading scheme over economic fears
Resolution calls on EPA to reverse endangerment finding on the grounds climate scientists have been involved in an "organised and ongoing effort" to promote "discredited" global warming
BrightSource Energy proposes scaling back planned solar facility following campaign from conservationists concerned about potential impact on endangered desert tortoise
Draft bill proposes reinstatement of $1-a-gallon tax break
Study claims previous estimates of desertification have failed to account for the growing impact from changing land use
Small capacity providers could make use of feed-in tariffs