The strategy, published yesterday, is set to fall far short of legally binding targets to cut carbon emissions.
Tory ministers claim the new plan will boost the economy while reducing greenhouse gas emissions and keeping household energy bills down.
However, the amount of money allocated by the Tory strategy is not enough to meet its climate commitments, environmental lawyer Jonathon Church warned.
Mr Church, who works for campaigning law firm ClientEarth, pointed out that Britain is still set to miss its targets for 2023-2027 by roughly the entire amount of CO2 emitted by the Philippines in a year.
“The Clean Growth Strategy does not fix this … good intentions are no longer good enough,” he said.
“One of the reasons the government managed to achieve its carbon reductions was because of the credit crunch. It must not use overachievement in earlier years to do less now.”
As part of the strategy, the government is planning to allocate £577 million for new renewable projects — roughly what was spent on 15 miles of roadworks on the A1 and polar research vessel RRS Sir David Attenborough, the boat formerly known as Boaty McBoatface.
It also claimed that it would insulate “more than a million homes.” But Tory and Liberal Democrat changes to Labour-era insulation schemes caused a huge drop in the number of homes improved — from about 2.4 million in 2012 to roughly 600,000 in 2013 with even fewer homes insulated since then.