Extension of green incentives now depends on House vote
Key tax credits and grants for biofuel producers and renewable energy projects included in controversial tax bill
Cash grant for major renewables projects under threat unless senators deliver bipartisan deal
But targets for second generation cellulosic etahnol are lower than expected
Canadian firm says new Edmonton plant will process 100,000 tonnes of waste year, creating enough fuel for 400,000 cars
Senior executive argues 10,000 more flex-fuel pumps are needed across US
Think-tank calculates that 107 million tonnes of US grain used to make biofuels last year could have fed 330 million people
Costs to taxpayer of biofuel subsidies equivalent to $82 a barrel on top of retail prices
Proposed ethanol plant claims to have £1.5bn in supply contracts already in place