Endesa S.A. - Net Asset Value 2023

National Storage Mechanism | Additional information

Standard & Poor's review of Endesa's Long-Term Issuer Credit Rating

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Borja Acha Besga

Secretary of the Board of Directors

Madrid, 5 December 2023

In accordance with the provisions of Article 226 of the Spanish Securities Market Act, Endesa, S.A. hereby issues notice of the following Inside Information:

On 5 December 2023, the credit rating agency Standard & Poor's published a press release reviewing Endesa S.A.'s Long-Term Issuer Credit Rating from " BBB+" " to "BBB" with a "stable outlook". Endesa’s short-term credit rating remains at "A-2"

Secretary to the Board of Directors

Endesa, S.A. Registered offices: Calle Ribera del Loira, 60, Madrid. Registered in the Mercantile Registry of Madrid, page M-6405, volume 323, folio 1, Spanish Tax ID (C.I.F.) A28023430.

“This English-language version has been translated from the original issued in Spanish and is provided for informational purposes only. In the event of discrepancy, the Spanish-language version prevails.”