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v3.26.1

Summary of Significant Accounting Principles (Tables) | 6 Months Ended
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Jun. 30, 2026
Cash, Cash Equivalents, And Restricted Cash [Abstract] |
Supplemental Cash Flow Information |
|  | MGE Energy |  | MGE(b)
|  | June 30, |  | June 30, |  | June 30, |  | June 30,
(In Thousands) |  | 2026 |  | 2025 |  | 2026 |  | 2025
Income tax paid (receipts), net(a): |  |  |  |  |  |  |  |  |  |  |  |
US Federal |  | $ | (7,232) |  | $ | 3,681 |  | $ | (7,872) |  | $ | 3,351
US State and Local: |  |  |  |  |  |  |  |  |  |  |  |
Wisconsin |  |  | 3,800 |  |  | 5,000 |  |  | 3,620 |  |  | 4,980
Other |  |  | 91 |  |  | 66 |  |  | — |  |  | —
Significant noncash investing activities: |  |  |  |  |  |  |  |  |  |  |  |
Accrued capital expenditures |  |  | 26,099 |  |  | 9,120 |  |  | 26,099 |  |  | 9,120
(a) For the six months ended June 30, 2026, federal tax receipts include $9.5 million of proceeds from the transfer of federal tax credits under Internal Revenue Code Section 6418. (b) MGE Energy files a consolidated federal income tax return with its subsidiaries. While taxes are filed on a consolidated basis, MGE calculates its respective share of tax liability and makes intercompany tax payments to or from its parent company.
Cash, Cash Equivalents, and Restricted Cash | The following table presents the components of total cash, cash equivalents, and restricted cash on the consolidated balance sheets.
|  | MGE Energy |  | MGE
|  | June 30, |  | December 31, |  | June 30, |  | December 31,
(In thousands) |  | 2026 |  | 2025 |  | 2026 |  | 2025
Cash and cash equivalents |  | $ | 16,621 |  | $ | 5,666 |  | $ | 10,737 |  | $ | 2,248
Restricted cash |  |  | 1,014 |  |  | 952 |  |  | 1,014 |  |  | 952
Receivable - margin account |  |  | 2,048 |  |  | 2,118 |  |  | 2,048 |  |  | 2,118
Cash, cash equivalents, and restricted cash |  | $ | 19,683 |  | $ | 8,736 |  | $ | 13,799 |  | $ | 5,318

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- Definition Tabular disclosure of the components of cash and cash equivalents, including restricted amounts. + References No definition available. + Details
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