NEW YORK--(BUSINESS WIRE)--Fitch Ratings has affirmed the long-term Issuer Default Rating (IDR) of Southwest Power Pool (SPP) at 'A' with a Stable Rating Outlook. Additionally, Fitch affirmed SPP's short-term IDR at 'F1'. Approximately $267 million of debt is affected by today's rating action. A full list of rating actions follows at the end of this press release. KEY RATING DRIVERS SPP operates under a Federal Energy Regulatory Commission (FERC)-approved Open Access Transmission Tariff (OATT)


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