Electricity that is not consumed by the producer, as long as the installation is connected to the RESP, may be sold to the CUR or a free market trader, and its value is calculated taking into account the indexation of the electricity price in the market. (OMIE) with a 10% penalty on that amount. In the last year, the average value of electricity sold to the grid was 0.041 € / kWh, according to Ordinance no. 15/2015, of 23 January.
Billing is done in accordance with Regulation no. 266/2020, of 20 March.