SCHEDULE OF REGULATED ASSETS AND LIABILITIES |
The tables below present a summary of regulatory assets and liabilities, net of amortization, for the periods indicated: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | March 31, 2024 | | | Remaining Recovery Period | | Current | | Noncurrent | | Total | | | | | (Thousands of dollars) | Winter weather event costs | | (a) | | $ | 17,390 | | | $ | 17,433 | | | $ | 34,823 | | Under-recovered purchased-gas costs | | 1 year | | 29,465 | | | — | | | 29,465 | | Pension and postemployment benefit costs | | See Note 9 | | 1,601 | | | 229,014 | | | 230,615 | | Reacquired debt costs | | 6 years | | 723 | | | 2,531 | | | 3,254 | | MGP remediation costs | | 15 years | | 98 | | | 30,387 | | | 30,485 | | Ad-valorem tax | | 1 year | | 12,085 | | | — | | | 12,085 | | WNA | | 1 year | | 16,207 | | | — | | | 16,207 | | Customer credit deferrals | | 1 year | | 12,833 | | | 1,177 | | | 14,010 | | Other | | 1 to 18 years | | 4,290 | | | 3,309 | | | 7,599 | | Total regulatory assets, net of amortization | | | | 94,692 | | | 283,851 | | | 378,543 | | Income tax rate changes | | (a) | | — | | | (487,475) | | | (487,475) | | Over-recovered purchased-gas costs | | 1 year | | (34,844) | | | — | | | (34,844) | | Total regulatory liabilities | | | | (34,844) | | | (487,475) | | | (522,319) | | Net regulatory assets and liabilities | | | | $ | 59,848 | | | $ | (203,624) | | | $ | (143,776) | | (a) Recovery period varies by jurisdiction. See discussion below for additional information regarding our regulatory assets related to winter weather event costs and regulatory liabilities related to federal income tax rate changes. |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2023 | | | Remaining Recovery Period | | Current | | Noncurrent | | Total | | | | | (Thousands of dollars) | Winter weather event costs | | (a) | | $ | 22,633 | | | $ | 21,495 | | | $ | 44,128 | | Under-recovered purchased-gas costs | | 1 year | | 10,391 | | | — | | | 10,391 | | Pension and postemployment benefit costs | | See Note 9 | | 6,379 | | | 228,092 | | | 234,471 | | Reacquired debt costs | | 6 years | | 723 | | | 2,712 | | | 3,435 | | MGP remediation costs | | 15 years | | 98 | | | 31,893 | | | 31,991 | | Ad-valorem tax | | 1 year | | 14,533 | | | — | | | 14,533 | | WNA | | 1 year | | 11,404 | | | — | | | 11,404 | | Customer credit deferrals | | 1 year | | 6,184 | | | — | | | 6,184 | | Other | | 1 to 18 years | | 2,963 | | | 3,714 | | | 6,677 | | Total regulatory assets, net of amortization | | | | 75,308 | | | 287,906 | | | 363,214 | | | | | | | | | | | Income tax rate changes | | (a) | | — | | | (500,478) | | | (500,478) | | Over-recovered purchased-gas costs | | 1 year | | (66,901) | | | — | | | (66,901) | | Total regulatory liabilities | | | | (66,901) | | | (500,478) | | | (567,379) | | Net regulatory assets and liabilities | | | | $ | 8,407 | | | $ | (212,572) | | | $ | (204,165) | | (a) Recovery period varies by jurisdiction. See discussion below for additional information regarding our regulatory assets related to winter weather event costs and regulatory liabilities related to federal income tax rate changes. |
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