Subsidies

Buyers, manufacturers and battery-charging station operators all set to benefit from scheme

Grid operators required to buy excess electricity at rates on a par with coal-fired plants

Debate over merits of corn-based ethanol heats up as campaigners remain divided on whether Obama should scrap generous subsidies

Report claims slashing malfunctioning energy subsidies worldwide would cut carbon emissions and boost economy

European Commission reportedly set to support anti-dumping complaints against subsidised US biofuel