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Long-Term Debt | 12 Months Ended
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Dec. 31, 2023
Long-Term Debt, Unclassified [Abstract] |
Long-Term Debt | 9. Long-Term Debt A summary of the Registrants' long-term debt is included in the statements of capitalization. At December 31, 2023, the Registrants were in compliance with all of their debt agreements. Maturities of OGE Energy's consolidated long-term debt during the next five years consist of $129.4 million in 2025, $181.0 million in 2027 and $500.0 million in 2028. Maturities of OG&E's long-term debt during the next five years consist of $79.4 million in 2025, $181.0 million in 2027 and $500.0 million in 2028. All other long-term debt of the Registrants matures after 2028. The Registrants have previously incurred costs related to debt refinancing. Unamortized loss on reacquired debt is classified as a Non-Current Regulatory Asset in the balance sheets. Unamortized debt expense and unamortized premium and discount on long-term debt are classified as Long-Term Debt in the balance sheets and are being amortized over the life of the respective debt. In January 2023, OG&E issued $450.0 million of 5.40 percent Senior Notes due January 15, 2033, and in April 2023, OG&E issued $350.0 million of 5.60 percent Senior Notes due April 1, 2053. The proceeds from these issuances were added to OG&E's general funds to be used for general corporate purposes, including to help fund the repayment of its $500.0 million 0.553 percent Senior Notes that matured on May 26, 2023 and the funding of its capital investment program and working capital needs. OGE Energy has a $100.0 million floating rate unsecured three-year credit agreement, of which $50.0 million is considered a revolving loan and $50.0 million is considered a term loan. For the year ended December 31, 2023, the interest rate for the $50.0 million drawn on the term loan under this credit agreement ranged from 5.375 percent to 6.375 percent. For additional information related to this credit agreement, see Note 10. In 2021, OGE Energy issued $500.0 million of 0.703 percent Senior Notes, and OG&E issued $500.0 million of 0.553 percent Senior Notes. The Registrants repaid each of the $500.0 million Senior Notes that matured on May 26, 2023. OG&E Industrial Authority Bonds OG&E has tax-exempt pollution control bonds with optional redemption provisions that allow the holders to request repayment of the bonds on any business day. The following table presents information about these bonds, which can be tendered at the option of the holder during the next 12 months.
Series | Date Due | Amount |
|  |  |  |  | (In millions) |
1.85% |  | — |  | 4.75% | Garfield Industrial Authority, January 1, 2025 | $ | 47.0 |
1.85% |  | — |  | 4.60% | Muskogee Industrial Authority, January 1, 2025 |  | 32.4 |
1.85% |  | — |  | 4.75% | Muskogee Industrial Authority, June 1, 2027 |  | 56.0 |
Total (redeemable during next 12 months) | $ | 135.4 |
All of these bonds are subject to an optional tender at the request of the holders, at 100 percent of the principal amount, together with accrued and unpaid interest to the date of purchase. The bond holders, on any business day, can request repayment of the bond by delivering an irrevocable notice to the tender agent stating the principal amount of the bond, payment instructions for the purchase price and the business day the bond is to be purchased. The repayment option may only be exercised by the holder of a bond for the principal amount. When a tender notice has been received by the trustee, a third-party remarketing agent for the bonds will attempt to remarket any bonds tendered for purchase. This process occurs once per week. Since the original issuance of these series of bonds in 1995 and 1997, the remarketing agent has successfully remarketed all tendered bonds. If the remarketing agent is unable to remarket any such bonds, OG&E is obligated to repurchase such unremarketed bonds. As OG&E has both the intent and ability to refinance the bonds on a long-term basis and such ability is supported by an ability to consummate the refinancing, the bonds are classified as Long-Term Debt in the balance sheets. OG&E believes that it has sufficient liquidity to meet these obligations.

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