In recent years, Portugal has put in place several policies to increase the use of renewable energy sources, energy efficiency and security of supply, decrease energy import dependency and improve the economic sustainability of the energy system. In particular, the focus on renewable energy allowed to achieve very positive results in terms of increase in domestic energy production and decrease of external energy dependency. Portugal's national energy resources come almost exclusively from renewable energy, mainly biomass, with 51% of domestic production in 2020 and renewable electricity (36%), which is produced essentially by hydro, wind and photovoltaic. Portugal's lack of fossil fuel resources and its relatively low domestic energy production result in a high energy import dependency. The investment on renewable energies and energy efficiency in the 20-year period between 2001 and 2019 has allowed Portugal to lower its energy dependency from 85.6% to 74.2%. Between 2011 and 2020 the average annual growth rate of total Primary Energy Consumption was -0.7%, which compares with -1.0 % in the previous 10year period (2001-2010). Between 2011 and 2020 the average annual growth rate of total Final Energy Consumption was -0.7%, which compares with -0.6% in the previous 10-year period (2001-2010). There is no prospection and production of oil in Portugal, so all crude oil in the country is imported. Furthermore, the recently adopted Portuguese Climate Law, prohibits any new hydrocarbon prospection or exploration permits in the national territory. Portugal has phasedout electricity production through coal in 2020.