I think this could be significant. In the latest of its pieces on how to build a majority at the next election, Conservative Home, the biggest website for the Tory grassroots, has come out against subsidies for windfarms.
Breaking with the cross-party consensus on climate change would put Cameron on the side of families and manufacturers. Perhaps free from the obsession with change-the-world environmentalism we could also be freed up as a party to focus on a more practical, local environmentalism. Conservatives should, of course, be conservationists but our focus should be on cleaner rivers, planting trees and protecting habitats of outstanding beauty. Yes, we should invest in clean technologies that will help the global environment but we shouldn't be spending money on imported and immature windfarm technologies.