What is the heating conversion efficiency of induction heating furnace and resistance furnace?

When heating by induction heating furnaces and resistance furnaces that use electricity as heating energy, the conversion efficiency of coal-to-electricity is 0.40 based on thermal power generation using coal as fuel. The electric efficiency of the electric system of the induction heating furnace is 0.65, and the electric efficiency of the electric system of the resistance heating furnace is 0.60 (including the electric efficiency of the resistance furnace).