Liberal Democrat party president Tim Farron has indicated that he would support the inclusion of a decarbonisation target in the government's flagship Energy Bill.
A number of MPs - including Conservatives and Lib Dems - have signed an early day motion (EDM) urging the coalition to set a target for the decarbonisation of the UK's energy supply. Energy secretary Ed Davey, however, has so far resisted the calls.
"The need to tackle climate change is urgent and this issue is too important to be used as some kind of political football," Mr Farron said in a letter to a constituent. "I believe that a legally binding target will help to secure confidence and investment in low carbon projects, which will serve to strengthen our green economy."
Mr Farron added that if negotiations between ministers were to fail to deliver a decarbonisation target, he would vote for amendments originally tabled by Tory backbencher Tim Yeo.
Last week, Mr Davey announced that planning permission had been granted for the development of new nuclear reactors at Hinkley Point in Somerset.