This measure has brought in a tax reform with a view to internalizing the environmental costs stemmed from electric power production and the storage of the nuclear fuel spent or the radioactive waste, and therefore, becoming a stimulus to improve Spain’s levels of energy efficiency. This law regulated three new taxes: on the value of electric energy production; on the production of the spent nuclear fuel and the resulting radioactive waste from nuclear energy generation; on the storage of the spent nuclear fuel and radioactive waste in centralized plants. In addition, this Law created a levy for the use of continental waters in electric power production, modified the tax rates for natural gas and coal, and withdrawed the envisaged exemptions for energy products used in producing electric energy and electric power co-generation and useful heat. IEA/IRENA Global Renewable Energy Policies and Measures Database © OECD/IEA and IRENA, [November 2020]