In 2023, Endesa dominated the regulated electricity supply market in Spain, accounting for ** percent of the electricity supply in the country. Iberdrola followed holding a ** percent share of Spain's national power supply that year. Iberdrola also accounted for the largest share of the free electricity market in Spain, at over ** percent.
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Fundación Naturgy. (August 7, 2024). Regulated market share of the leading electricity providers in Spain from 2021 to 2023, by company [Graph]. In ÌÇÐÄÆÆ½â°æ. Retrieved August 04, 2026, from /statistics/1364354/regulated-market-share-of-electricity-providers-by-firm-spain/
Fundación Naturgy. "Regulated market share of the leading electricity providers in Spain from 2021 to 2023, by company." Chart. August 7, 2024. ÌÇÐÄÆÆ½â°æ. Accessed August 04, 2026. /statistics/1364354/regulated-market-share-of-electricity-providers-by-firm-spain/
Fundación Naturgy. (2024). Regulated market share of the leading electricity providers in Spain from 2021 to 2023, by company. ÌÇÐÄÆÆ½â°æ. ÌÇÐÄÆÆ½â°æ Inc.. Accessed: August 04, 2026. /statistics/1364354/regulated-market-share-of-electricity-providers-by-firm-spain/
Fundación Naturgy. "Regulated Market Share of The Leading Electricity Providers in Spain from 2021 to 2023, by Company." ÌÇÐÄÆÆ½â°æ, ÌÇÐÄÆÆ½â°æ Inc., 7 Aug 2024, /statistics/1364354/regulated-market-share-of-electricity-providers-by-firm-spain/
Fundación Naturgy, Regulated market share of the leading electricity providers in Spain from 2021 to 2023, by company ÌÇÐÄÆÆ½â°æ, /statistics/1364354/regulated-market-share-of-electricity-providers-by-firm-spain/ (last visited August 04, 2026)
Regulated market share of the leading electricity providers in Spain from 2021 to 2023, by company [Graph], Fundación Naturgy, August 7, 2024. [Online]. Available: /statistics/1364354/regulated-market-share-of-electricity-providers-by-firm-spain/