Investor Presentaiton

53 PSCO | Investor Fact Book October 2023 | Xcel Energy PSCO | Consolidated Statements of Capitalization December 31 Amounts in Millions, Except Share and Per Share Data Long-term debt First Mortgage Bonds, Series due: Sept. 15, 2022, 2.25% March 15, 2023, 2.50% May 15, 2025, 2.90% June 15, 2028, 3.70% Jan. 15, 2031, 1.90% June 15, 2031, 1.875% June 1, 2032, 4.10% Sept. 1, 2037, 6.25% Aug. 1, 2038, 6.50% Aug. 15, 2041, 4.75% Sept. 15, 2042, 3.60% March 15, 2043, 3.95% March 15, 2044, 4.30% June 15, 2046, 3.55% June 15, 2047, 3.80% June 15, 2048, 4.10% Sept. 15, 2049, 4.05% March 1, 2050, 3.20% Jan. 15, 2051, 2.70% June 1, 2052, 4.50% Unamortized discount 2022 2021 $- $300 250 250 250 250 350 350 375 375 750 750 300 350 350 300 300 250 250 500 500 250 250 300 300 250 250 400 400 350 350 400 400 550 550 375 375 400 (37) (33) (53) (50) 6,860 6,467 250 300 $6,610 $6,167 Unamortized debt expense Total Less current maturities Total PSCo long-term debt Common Stockholders' Equity Common Stock - 100 shares authorized of $0.01 par value; 100 shares $- $- outstanding at Dec. 31, 2022 and 2021, respectively. Additional paid-in capital 6,992 6,426 Retained earnings 2,260 2,040 Accumulated other comprehensive loss (22) (22) Total common stockholders' equity $9,230 $8,444

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