1. COM(97) 599 final Energy for the future—renewable sources of energy: White Paper.
2. Director 2001/77/CE of the European Parliament and the Council of 27 of September of 2001, on the promotion of the electricity produced from sources of renewable energy in the internal market of the electricity.
3. The Plan of renewable energies 2005–2010. Spain, August 2005.
4. Law 54/1997, of 27 of November, the Electrical Sector.
5. Real Decree 2818/1998 Production of electrical energy by facilities supplied of electrical energy by resources or renewable power plants, remainders and co-generation.