energy sources. They are included for information about the sector. The total energy from bio fuels were 1,010 k toe in 2014. Renewable electricity accounted for 0.5% of the total fuel use in the transport sector (using 2020 EU target criteria). A rough calculation would imply that if the bio fuels are finally confirmed as renewable sources then the total renewable energy use in the transport sector would come to approximately 4.7% of the total in 2014. Sources Wind power In 2014 Spain was the world's fourth biggest producer of wind power. In that year, the year-end installed capacity was 23 GW and the annual production was 51,439 GWh, a share of total electricity consumption of 21.1%. Installed capacity grew from around 0.8GW in 1998 to approximately 23 GW by 2012. As can be seen from the graph, virtually no new wind power has been installed from 2012 to 2017. Hydroelectric Power Installed capacity of hydroelectric power has grown by small incremental amounts annually since 2006 from 18,1815 MW in 2006 to 19,468 MW in 2014. Between 2014 and 2015 there was a significant growth in pumped storage generation of 850 MW. Total capacity reached 20,336 MW in 2015. Annual electricity generation from hydroelectric sources varies considerably from year to year. A rough calculation shows that the contribution to total net generation varied approximately between 9-17 percent annually. This variation helps explain the fluctuating annual figures for total renewable energy in Spain. Production in 2012 was a little over half that of 2010 at just 24,100 gW/h. Solar power In 2005 Spain became the first country in Europe to require the installation of photovoltaic electricity generation in new buildings, and the second in the world (after Israel) to require the installation of solar hot water systems. With the construction of the PS10, located near Seville, Spain became the first country to ever have a commercial solar energy power tower. In recent years there has been much controversy over a tax on PV power generation as the cost of PV solar installations has reached grid parity in Spain according to several sources. Solar power first began to be installed significantly in 2006 with 136 MW installed capacity before rising rapidly to 6,949 MW by 2013. Little change in installed capacity occurred between 2013 and 2017. Renewable Thermal In 2014 biomass and biogas contributed to around 2% of electricity generation in Spain