John Stevenson: Does the Minister agree that making solar power compulsory for all new builds would be beneficial for the homeowner, would remove any need for subsidy and would cost the taxpayer nothing?
Claire Perry: My hon. Friend raises an excellent point. He will know that building regulations now set minimum energy standards, couched in performance terms rather than being prescriptivist about the types of technology that should be used. Builders are increasingly adding renewable energy systems, but I am always interested to see what more we can do to bring forward such a good way of lowering bills and CO2 emissions.