The tax on the value of the production of electric energy is a tax of a direct nature and real nature levied on the performance of activities of production and incorporation into the electrical system of electrical energy, measured in bars of (article 1 of Ley 15/2012). The tax base is the amount of production and incorporation into the electricity system of electrical energy minus auxiliary consumption and losses up to the point of connection to the network.

The tax on the value of the production of electric energy is a concerted tax that is governed by the same substantive and formal rules established at any time by the Spanish Government. However, the levy corresponds to that of the Foral Council when the production of electricity is located in the Basque Country (article 23 of Ley 7/2014, 21 April). of the Foral Council when the production of electricity is located in Basque territory (article 23 of Ley 7/2014, 21 April).