For the purposes of this monitoring, a green electricity tariff is a tariff for electricity that, on account of green electricity labelling or other marketing, is shown to have been produced with a high share or high promotion of efficient or regenerative production technologies. It is offered or traded at a separate tariff. The graphic shows the percentage of the total volume of electricity that was supplied to household customers as green electricity and the percentage of these household customers in relation to all household customers in Germany.