Market share of main power providers in regulated market in Spain 2022, by firm
In 2022, Endesa dominated the regulated electricity supply market in Spain, accounting for nearly 45 percent of the electricity supply in the country. Iberdrola followed holding a 30 percent share of Spain's national power supply that year. By comparison, Iberdrola accounted for the largest share of the free electricity market in Spain, at over 30 percent.