Green energy champion Dale Vince, who founded Stroud-based Ecotricity, has attacked Conservative plans to block new onshore windfarms if they win the 2015 general election.
Energy Minister Michael Fallon said projects that have not been granted planning permission before the election would not receive public funding because the UK will have enough wind power to meet 2020 EU targets.
But Mr Vince believes the Prime Minister is putting the interests of his political party ahead of the interests of his country.
He said: “Before the last election, David Cameron promised to lead the greenest government ever – that promise lies in tatters now as he prepares to fight the next election dancing to the tune set by UKIP.
“It’s a shameful abdication of his responsibility as prime minister, to put his party before the country in this way.
“We need an energy policy that makes sense, environmentally and economically, one that can give us energy independence, lower bills and abate climate change. What we have instead is one that only makes sense politically, an energy policy for the Tory party.”
The Conservative manifesto will also pledge to stop any further green levies paid by bill-payers for onshore wind power – but Mr Vince, whose firm supplies more than 100,000 homes and businesses across Britain with green energy, says that it fails to highlight that this support is currently less than £10 of household energy bills.
They will also change the planning system to allow local councils to block any new windfarms which do not already have planning consent before the election.
The announcements come as a YouGov poll last week showed that wind energy is more popular than fracking, the shale gas extraction method which is preferred by the Conservatives.
Some 62 per cent said they would rather have a wind farm in their area than a fracking site, with just 19 per cent preferring to have fracking nearby.
One in two of Tory voters surveyed also said wind was their preferred choice between the two.