Why do metering devices have to be installed?

Consumption-based billing makes a considerable contribution to sustainable consumption of energy and water and accordingly to conserving the climate. Investigations indicate that the existence of metering devices on their own makes possible savings of between 20% and 30%. We only use our resources economically if consumption is measured. Blanket distribution, on the other hand, promotes waste. Consumption-based billing is mandatory in accordance with § 4 of the heat cost directive.