The gap between Britain’s current share of renewables and its 2020 target is the biggest in the European Union.

That’s according to Labour leader Jeremy Corbyn who challenged the Prime Minister on the government’s renewable energy record.

Mr Cameron said: “We spent record sums helping developing countries to go green and in the next five years we are going to be spending $9 billion (£6bn) on helping other countries – which will be crucial in building the Paris deal next week.”

However Jeremy Corbyn said the problem with the Prime Minister’s answer was his “recent decisions, such as cutting support for solar panels on home and industrial projects, scrapping the Green Deal, cutting support for wind turbines, putting a new tax on renewable energy [and] increasing subsidy for diesel generators”.

Mr Corybn added: “Is it any wonder that the Chief Scientists of the United Nations Environment Programme has criticised Britain for going backwards on renewable energy?”

Mr Cameron said the trebling of wind power in the last parliament was an “enormous investment”.

The UK will miss a major legally-binding renewable target, Energy Secretary Amber Rudd admitted in a leaked letter.

The government has pledged to back both the fracking and renewable energy industry in the Spending Review.