>"even though resistive heaters are more efficient than natural gas." You have to be careful about what you measure. Resistive heaters are 100% efficient by de

>"even though resistive heaters are more efficient than natural gas." You have to be careful about what you measure. Resistive heaters are 100% efficient by definition, but you have to look at the whole chain. The energy has to be converted from X (coal, natural gas, isotopes decay) to electricity and transmitted to your home. Only the last step is 100% efficient. You lose a lot of energy in generation and transmission of electricity.