| Balance Sheets | 2025-09-30 | 2025-06-30 | 2025-03-31 | 2024-09-30 |
|---|---|---|---|---|
| Materials, supplies, and inventories | 842,800 | 703,000 | 576,000 | 789,900 |
| Prepaid taxes | 125,500 | 209,000 | 171,600 | 124,500 |
| Other prepayments | 82,400 | 51,400 | 76,200 | 50,700 |
| Other | 144,000 | 116,300 | 224,900 | 156,100 |
| Current assets | 2,515,300 | 2,599,100 | 2,943,300 | 2,619,200 |
| Property, plant, and equipment, net of accumulated depreciation and amortization of 12,229.4 and 11,611.9, respectively | 37,354,200 | 36,060,800 | 35,447,800 | 32,852,900 |
| Regulatory assets (september30, 2025 and december31, 2024 include 69.6 and 76.5, respectively, related to wepco environmental trust) | 3,217,400 | 3,231,800 | 3,283,300 | 3,346,500 |
| Equity investment in transmission affiliates | 2,268,800 | 2,200,100 | 2,149,000 | 2,080,800 |
| Goodwill | 3,052,800 | 3,052,800 | 3,052,800 | 3,052,800 |
| Pension and opeb assets | 1,016,400 | 1,000,400 | 983,800 | 918,100 |
| Other | 384,000 | 379,300 | 372,100 | 326,200 |
| Long-term assets | 47,293,600 | 45,925,200 | 45,288,800 | 42,577,300 |
| Total assets | 49,808,900 | 48,524,300 | 48,232,100 | 45,196,500 |
| Short-term debt | 1,260,600 | 810,300 | 1,327,100 | 597,000 |
| Current portion of long-term debt (september30, 2025 and december31, 2024 include 9.2 related to wepco environmental trust) | 1,901,400 | 2,250,400 | 2,729,900 | 1,823,700 |
| Accounts payable | 917,000 | 816,500 | 791,500 | 740,700 |
| Accrued interest | - | - | - | 202,400 |
| Other | 971,300 | 820,400 | 1,014,400 | 645,600 |
| Current liabilities | 5,050,300 | 4,697,600 | 5,862,900 | 4,009,400 |
| Long-term debt (september30, 2025 and december31, 2024 include 72.0 and 76.4, respectively, related to wepco environmental trust) | 17,663,300 | 17,110,400 | 16,161,800 | - |
| Long-term debt (september30, 2024 and december31, 2023 include 80.9 and 85.3, respectively, related to wepco environmental trust) | - | - | - | 16,889,200 |
| Finance lease obligations | 364,200 | 361,800 | 293,900 | - |
| Deferred income taxes | 5,814,300 | 5,739,500 | 5,577,200 | 5,322,200 |
| Deferred revenue, net | 318,300 | 323,900 | 329,300 | 339,900 |
| Regulatory liabilities | 3,940,300 | 4,039,000 | 4,043,900 | 3,889,100 |
| Intangible liabilities | 595,000 | 609,700 | 624,500 | 554,600 |
| Environmental remediation liabilities | 438,200 | 438,900 | 442,100 | 430,500 |
| Aros | 623,200 | 616,400 | 601,500 | 547,900 |
| Other | 991,000 | 917,000 | 868,000 | 822,500 |
| Long-term liabilities | 30,747,800 | 30,156,600 | 28,942,200 | 28,795,900 |
| Common stock 0.01 par value 650,000,000 shares authorized 325,294,252 and 317,680,855 shares outstanding, respectively | 3,200 | 3,200 | 3,200 | 3,200 |
| Additional paid in capital | 5,105,800 | 4,743,100 | 4,456,100 | 4,191,400 |
| Retained earnings | 8,467,300 | 8,484,700 | 8,524,400 | 7,895,300 |
| Accumulated other comprehensive loss | -7,900 | -7,900 | -7,900 | -7,900 |
| Common shareholders' equity | 13,568,400 | 13,223,100 | 12,975,800 | 12,082,000 |
| Preferred stock of subsidiary | 30,400 | 30,400 | 30,400 | 30,400 |
| Noncontrolling interests | 412,000 | 416,600 | 420,800 | 278,800 |
| Total liabilities and equity | 49,808,900 | 48,524,300 | 48,232,100 | 45,196,500 |
WEC ENERGY GROUP, INC. (WEC)
WEC ENERGY GROUP, INC. (WEC)