"As it is likely that there will be a surplus of around €2bn ($2.7bn) on the EEG account at the end of the year, the surcharge without the reform of the EEG (Renewable Energies Act) would not rise further in 2015, but rather fall," says Bruno Burger, who heads the energy data and strategic development group at Fraunhofer ISE.

Consumers currently have to pay €0.0624