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Energy White Paper

My Lords, perhaps the Minister can help me. Surely hydrogen cars—I believe that some cities in the United States have buses that run on hydrogen, consequently emitting no carbon dioxide exhausts—building regulations that would make all new houses contribute either by solar panels or heat exchangers plus or minus to the national grid, and the growing of agricultural crops for fuel are much better things to encourage than windmills, which cannot be relied on when the wind is blowing too strongly or when it is not blowing at all. Can the noble Lord help me on those matters? As always, I am seeking information and enlightenment.