1. COM (97) 599 final energy for the future – renewable sources of energy: white paper.
2. The plan of renewable energies 2005–2010. Spain, August 2005.
3. Law 54/1997, of 27 of November, the electrical sector.
4. Royal Decree 2818/1998. Production of electrical energy by facilities supplied of electrical energy by resources or renewable power plants, remainders and co-generation.
5. Royal Decree 1663/2000, dated September 29th, on the connection of photovoltaic installations to the low voltage network.