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DERIVATIVE INSTRUMENTS | 6 Months Ended
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Jun. 30, 2026
Derivative Instruments and Hedging Activities Disclosure [Abstract] |
DERIVATIVE INSTRUMENTS | DERIVATIVE INSTRUMENTS We use derivatives as part of our risk management program to manage the risks associated with the price volatility of interest rates, purchased power, generation, and natural gas costs for the benefit of our customers and shareholders. Our approach is non-speculative and designed to mitigate risk. Regulated hedging programs are approved by our state regulators. We record derivative instruments on our balance sheets as an asset or liability measured at fair value unless they qualify for the normal purchases and sales exception and are so designated. We continually assess our contracts designated as normal and will discontinue the treatment of these contracts as normal if the required criteria are no longer met. Changes in the derivative's fair value are recognized currently in earnings unless specific hedge accounting criteria are met or we receive regulatory treatment for the derivative. For most energy-related physical and financial contracts in our regulated operations that qualify as derivatives, our regulators allow the effects of fair value accounting to be offset to regulatory assets and liabilities. On our balance sheets, we classify derivative assets and liabilities as current or long-term based on the maturities of the underlying contracts. Derivative assets and liabilities are included in the other current and other long-term line items on our balance sheets. The following table shows our derivative assets and derivative liabilities. None of the derivatives shown below were designated as hedging instruments.
|  | June 30, 2026 |  | December 31, 2025
(in millions) |  | Derivative Assets |  | Derivative Liabilities |  | Derivative Assets |  | Derivative Liabilities
Current |  |  |  |  |  |  |  |
Natural gas contracts |  | $ | 20.8 |  |  | $ | 38.8 |  |  | $ | 19.7 |  |  | $ | 30.0 |
FTRs |  | 24.3 |  |  | — |  |  | 6.5 |  |  | 0.8 |
Total current |  | 45.1 |  |  | 38.8 |  |  | 26.2 |  |  | 30.8 |
Long-term |  |  |  |  |  |  |  |
Natural gas contracts |  | — |  |  | 3.1 |  |  | 0.1 |  |  | 1.7 |
Total |  | $ | 45.1 |  |  | $ | 41.9 |  |  | $ | 26.3 |  |  | $ | 32.5 |
Realized gains and losses on derivatives used in our regulated utility operations are recorded in cost of sales upon settlement; however, they may be subsequently deferred for future rate recovery or refund as the gains and losses are included in our utilities’ fuel and natural gas cost recovery mechanisms. Prior to June 30, 2026, realized gains and losses on FTRs and TCRs used in our non-utility operations were recorded in operating revenues on the income statements. As of June 30, 2026, the FTRs and TCRs used in our non-utility operations were all settled. Our realized gains and losses and the estimated notional volumes related to these settlements were as follows:
|  | Three Months Ended June 30, 2026 |  | Three Months Ended June 30, 2025
(in millions) |  | Volumes |  | Gains (Losses) |  | Volumes |  | Gains
Natural gas contracts |  | 48.6 Dth |  | $ | (16.8) |  |  | 47.3 Dth |  | $ | 6.5 |
FTRs and TCRs |  |  |  |  |  |  |  |
Regulated utility operations |  | 6.1 MWh |  | 4.3 |  |  | 6.7 MWh |  | 3.0 |
Non-utility operations |  | — MWh |  | — |  |  | 0.3 MWh |  | 0.3 |
Total |  |  |  | $ | (12.5) |  |  |  |  | $ | 9.8 |
|  | Six Months Ended June 30, 2026 |  | Six Months Ended June 30, 2025
(in millions) |  | Volumes |  | Gains |  | Volumes |  | Gains
Natural gas contracts |  | 111.6 Dth |  | $ | 12.8 |  |  | 108.8 Dth |  | $ | 4.6 |
FTRs and TCRs |  |  |  |  |  |  |  |
Regulated utility operations |  | 11.9 MWh |  | 6.0 |  |  | 13.8 MWh |  | 4.7 |
Non-utility operations |  | 0.1 MWh |  | 0.1 |  |  | 0.6 MWh |  | 0.1 |
Total |  |  |  | $ | 18.9 |  |  |  |  | $ | 9.4 |
On our balance sheets, the amounts recognized for the right to reclaim cash collateral or the obligation to return cash collateral are not offset against the fair value amounts recognized for derivative instruments executed with the same counterparty under the same master netting arrangement. At June 30, 2026 and December 31, 2025, we had posted cash collateral of $82.6 million and $41.4 million, respectively. These amounts were recorded on our balance sheets in other current assets. At June 30, 2026, we had also received cash collateral of $2.0 million. This amount was recorded on our balance sheet in other current liabilities. The following table shows derivative assets and derivative liabilities if derivative instruments by counterparty were presented net on our balance sheets:
|  | June 30, 2026 |  | December 31, 2025 |
(in millions) |  | Derivative Assets |  | Derivative Liabilities |  | Derivative Assets |  | Derivative Liabilities |
Gross amount recognized on the balance sheet |  | $ | 45.1 |  |  | $ | 41.9 |  |  | $ | 26.3 |  |  | $ | 32.5 |  |
Gross amount not offset on the balance sheet |  | (3.7) |  |  | (37.3) |  | (1) | (2.0) |  |  | (23.8) |  | (2)
Net amount |  | $ | 41.4 |  |  | $ | 4.6 |  |  | $ | 24.3 |  |  | $ | 8.7 |  |
(1)Includes cash collateral posted of $33.6 million. (2)Includes cash collateral posted of $21.8 million. Cash Flow Hedges We previously entered into forward interest rate swap agreements to mitigate the interest rate exposure associated with the issuance of long-term debt related to the acquisition of Integrys. These swap agreements were settled in 2015, and we continue to amortize amounts out of accumulated other comprehensive loss into interest expense over the periods in which the interest costs are recognized in earnings. The derivative gains related to these swap agreements reclassified from accumulated other comprehensive loss to interest expense during the three and six months ended June 30, 2026 and 2025 were not significant. At June 30, 2026, the amount expected to be reclassified from accumulated other comprehensive loss to interest expense over the next twelve months was also not significant.

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