Tim Yeo, Chairman of the House of Commons Energy and Climate Change Committee, said Liberal Democrat Ed Davey's Energy Department had "come out ahead on points" in negotiations, and he described the Treasury's package of support for green power as "realistic".
He told BBC Radio 4's Today: "I personally think that a couple of pounds a week - maybe rising to almost £3 a week - is a reasonable price for Britain to achieve a degree of energy security to reduce its total dependence on fossil fuels and to honour its commitments to cut green house gases."
It is the Government's long awaited light bulb moment. The Energy Bill published today envisages changes that would reach into our lives.
By 2020 we will be paying nearly £100 a year more for energy. But whether bills will come down again afterwards is still in dispute.
The coalition will announce plans on updating the energy infrastructure of pylons and power stations, and cutting our reliance on carbon.