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SHORT-TERM AND LONG-TERM DEBT
 3 Months Ended
Mar. 31, 2025
Debt Disclosure [Abstract]  
SHORT-TERM AND LONG-TERM DEBT SHORT-TERM AND LONG-TERM DEBT
The following tables present the Company’s short-term and long-term debt as of March 31, 2025, and December 31, 2024:
March 31, 2025PrincipalUnamortized Debt Issuance CostsTotal
Millions  
Short-Term Debt$94.2 —$94.2 
Long-Term Debt1,841.9 $(9.1)1,832.8 
Total Debt$1,936.1 $(9.1)$1,927.0 
December 31, 2024
Millions  
Short-Term Debt $94.7 —$94.7 
Long-Term Debt1,713.3 $(8.6)1,704.7 
Total Debt$1,808.0 $(8.6)$1,799.4 

We had $20.2 outstanding standby letters of credit and no outstanding draws under our lines of credit as of March 31, 2025 ($16.2 million in standby letters of credit and $20.0 million outstanding draws on our lines of credit as of December 31, 2024). We also have standby letters of credit outstanding under other letter of credit facilities. (See Note 6. Commitments, Guarantees and Contingencies.)

On March 25, 2025, ALLETE issued and sold $150 million of senior unsecured notes (“Notes”) to certain institutional buyers in the private placement market. The Notes were sold in reliance on an exemption from registration under Section 4(a)(2) of the Securities Act of 1933, as amended, to institutional accredited investors. Of the Notes issued and sold, $120 million of the Notes bear interest at a rate of 5.38 percent and mature on March 25, 2030, and $30 million of the Notes bear interest at a rate of 5.82 percent and mature on March 25, 2035. Interest on the Notes will be payable semi-annually on April 1 and October 1 of each year, commencing on October 1, 2025. The Company has the option to prepay all or a portion of the Notes at its discretion, subject to a make-whole provision. The Notes are subject to additional terms and conditions which are customary for these types of transactions. Proceeds from the sale of the Notes were used for refinancing of debt and general corporate purposes.

Financial Covenants. Our long-term debt arrangements contain customary covenants. In addition, our lines of credit and letters of credit supporting certain long-term debt arrangements contain financial covenants. Our compliance with financial covenants is not dependent on debt ratings. The most restrictive financial covenant requires ALLETE to maintain a ratio of indebtedness to total capitalization (as the amounts are calculated in accordance with the respective long-term debt arrangements) of less than or equal to 0.65 to 1.00, measured quarterly. As of March 31, 2025, our ratio was approximately 0.38 to 1.00. Failure to meet this covenant would give rise to an event of default if not cured after notice from the lender, in which event ALLETE may need to pursue alternative sources of funding. Some of ALLETE’s debt arrangements contain “cross-default” provisions that would result in an event of default if there is a failure under other financing arrangements to meet payment terms or to observe other covenants that would result in an acceleration of payments due. ALLETE has no significant restrictions on its ability to pay dividends from retained earnings or net income; however, under the Merger Agreement, the Company has agreed not to declare or pay dividends except for quarterly cash dividends payable by us in respect of shares of our common stock on a schedule consistent with our past practices in an amount not to exceed 5 percent per share more than the dividend payable during the prior 12-month period, subject to certain other exceptions. (See Note 11. Agreement and Plan of Merger.). As of March 31, 2025, ALLETE was in compliance with its financial covenants.