The European court of justice sees in the German law on renewable energies is no violation of EU law. The accusation of the EU Commission, if it were state aid, it was not detectable. to promote
electricity from renewable sources, Germany had established seven years ago by law that producers of solar or wind electricity is guaranteed a higher price than the market price. In addition, the Renewable energy sources act (EEG) granted to particularly energy-intensive companies such as the steel or chemical industry discounts. So you should remain competitive on the international market.
This, in turn, called on the EU Commission, which accused Germany to break with the EEG, contrary to the fundamental principles of fair competition. In a decision from 2014, the EU Commission came to the conclusion that the so-called green electricity-levy as state aid, but allowed. Also the discounts for bulk consumer goods from the point of view of the authorities in Brussels are aid who were against EU law. A small part of it is called, therefore, many companies to paid in consequence of the levy.