The rating agencies indicate that the company's strengths include its predictability and recurring cash flows generated by transactions, as well as its financial strength.

On 15 October 2021, Fitch Ratings affirmed the rating of Red Eléctrica Corporación and its subsidiary Red Eléctrica Financiaciones, SAU at 'A-' with a stable outlook, assigning an 'F1' rating in the short term.

On 26th April 2022, the rating agency Standard & Poor’s Global Ratings has issued a new report maintaining the company’s rating level and its outlook. Red Eléctrica Corporación, S.A. and its subsidiary Red Eléctrica de España, S.A.U. maintain their long term ratings of ‘A-’ and short term ratings of ‘A-2’ with a stable outlook.