Law 2773/99 establishes buyback systems for electricity generated from renewables in the interconnected and non-interconnected networks. In the interconnected network the Public Power Corporation (PPC) pays the generator a price which is composed of an energy and a capacity charge. The energy charge is 90% of the energy part of the medium-voltage domestic end-use tariff and the capacity charge is 50% of the capacity part of same tariff. In the non-interconnected islands PPC pays only for energy, not capacity. The price paid by PPC is 70% of the low-voltage end-use tariff, except for co-generators using renewable energy who receive 90% compensation. In 2001, the average buyback tariff was ?0.0616 per kWh in the interconnected system and ?0.0731 on the islands.