You won't find coal burners at these activists residence or at your own either. The suggestion that there is a hypocrisy in the fact that environmentalists are forced to depend on coal is a weak argument. That is what the "free market" provides us. We have no say over how our power companies generate power because they are after profits. The implementation of a new technology would mean CEO's and executives would need to take a pay cut or get laid off except that doesn't happen in capitalism.