In it, they warn the Mr Osborne that uncertainty over the government's commitment to low-carbon power generation is harming the development of green businesses.

BBC: Carbon emissions target urged by business leaders

The Tories have their own populist agenda: the creation of a Big Society Bank to distribute funds from dormant bank accounts and a Green Investment Bank to back low-carbon industry.

ECONOMIST: Two views on new banking rules are better than one

Liberal Democrat MSP Liam McArthur's amendment, which said the UK Government's plans for a Green Investment Bank to fund low-carbon transport and energy schemes would benefit Scotland's efforts to build a low-carbon economy, was passed without opposition with 75 MSPs voting for it and with 46 MSPs abstaining.

BBC: Decision time

The Green Investment Bank, securing investment in low-carbon energy, and tree-planting were among the other government successes, he said.

BBC: Science & Environment

Labour says the failure of the government's economic policy is undermining its agenda and its Green Investment Bank will not have full borrowing powers to fund low-carbon projects until 2016.

BBC: Debate on the government's green agenda

The switch to Sunoco Green E15, the official fuel of NASCAR and a renewable, low-carbon power source, reduced greenhouse gas emissions by 20% compared with unleaded gas.

FORBES: NASCAR Green Is Really Purple

The party is offering a Green New Deal it says would create 50, 000 jobs in a low-carbon economy.

BBC: Smaller parties trying to end domination of big four

Democrats may have a tougher time at the polls in general next year: Green policies like the state's renewable energy mandate, cap and trade and a low-carbon fuel standard will start kicking into high gear in 2014.

WSJ: Allysia Finley: A Farmers' Rebellion Lifts the California GOP