The electricity use in Portugal (gross production + imports – exports – losses) was 51.2 TWh in 2008. Portugal imported 9 TWh electricity in 2008. Population was 10.6 million. In 2014 electricity was generated by 30% hydroelectricity, 27% natural gas, 22% wind, 20% coal and 1% solar.
Portugal produced 11% of electricity with wind power in 2008 and had the average year capacity of 14% of wind power in the end 2010. Wind power capacity was 3,357 MW in end 2009 and 3,702 MW in end 2010.
Solar electricity production with the photovoltaic arrays is pollution-free. It is easily integrated into the urban environment, close to consumption needs. It does not emit greenhouse gases, it does not dip into finite fossil fuel resources. In Lisbon the energy payback time in the roof top solar photovoltaic (PV) technology is less than 2 years and less than in Sydney, Munich, Athens or Barcelona, but some more than in Madrid, Los Angeles or Ankara.