Primary energy
Primary energy is the amount of energy put into a supply system, as opposed to the “useful energy” that the supply system outputs to consumers.
Primary energy is the amount of energy put into a supply system, as opposed to the “useful energy” that the supply system outputs to consumers.
Energy intensity refers to how much energy is needed to produce an output. For countries, this is calculated according to the GDP. In Germany, energy-intensive industries are those who consume 10GW a year – they are exempt from the renewable energy surcharge.