抄録
With respect to the state-wide energy use, there might be found a paradox that more electrification apparently causes more energy losses by the power generation loss. This easily leads to a misunderstanding. Energy end-users need energy benefits, but neither city gas/oil nor electricity for the final energy consumption. They can have the two ways to heat an object, fuel combustion generating unavailable energy and heat pump use adding available energy (exergy, actually power) to the environmental energy or waste heat. And mechanical power demand, e.g. driving vehicles can be supplied from the electric power system of the highest efficiency. Such highly efficient use of energy brings more electrification. This paradox lies in the insufficient understanding of energy use science. The author considers the overall optimization for the efficient use of energy.
