Report warns installation and permitting expenses are likely to remain high despite cost of technology falling

Google-backed 392MW Ivanpah solar plant in California started to produce power this week

NRDC report finds 40 per cent of food produced in the US is never eaten, wasting $165bn of mostly edible food a year

New regulations based on US Clean Air Act welcomed by green groups but strongly criticised by coal industry

Judges clear way for Low Carbon Fuel Standard to impose a 10 per cent cut in transport fuel emissions by 2020

Electric car charging company will look to auction assets next month

Report finds 13 Western State produced almost a third of their energy from renewable sources compared to an eighth nationally

Company teams up with DEA to generate electricity from expired prescription drugs removed from circulation to reduce addiction rates

National Solar Power announces seven potential sites for giant 400MW solar PV project

Search giant cans high profile online smart meter service after admitting "inability to scale"