| Segment Reporting |
The following tables present the Company's segment revenues and other operating income, significant segment operating expenses, and segment income (loss) from operations: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended June 30, 2026 | | (in thousands) | | Upstream/Midstream | | Power | | Total Reportable Segments | | Corporate and Other | | Total | | Revenues and other operating income | | | | | | | | | | | | Natural gas, NGL, and oil sales | | $ | 221,928 | | | $ | — | | | $ | 221,928 | | | $ | — | | | $ | 221,928 | | Power revenues | | — | | | 74,362 | | | 74,362 | | | — | | | 74,362 | | | Derivative gains, net | | 95,284 | | | 47,971 | | | 143,255 | | | — | | | 143,255 | | | Marketing revenues | | 26,162 | | | — | | | 26,162 | | | — | | | 26,162 | | | Section 45Q tax credits | | — | | | — | | | — | | | 3,048 | | | 3,048 | | | | | | | | | | | | | | Other | | 328 | | | — | | | 328 | | | (3,548) | | | (3,220) | | | Total revenues and other operating income | | $ | 343,702 | | | $ | 122,333 | | | $ | 466,035 | | | $ | (500) | | | $ | 465,535 | | | Operating expenses | | | | | | | | | | | | | | | | | | | | | | | Lease operating and workover | | 44,482 | | | — | | | 44,482 | | | — | | | 44,482 | | | Fuel commodity costs | | — | | | 42,832 | | | 42,832 | | | — | | | 42,832 | | | Purchased power | | — | | | 29,502 | | | 29,502 | | | — | | | 29,502 | | | Marketing expense | | 22,516 | | | 685 | | | 23,201 | | | 61 | | | 23,262 | | | Taxes other than income | | 11,583 | | | 4,303 | | | 15,886 | | | 14 | | | 15,900 | | | Gathering and transportation | | 68,095 | | | — | | | 68,095 | | | — | | | 68,095 | | | Depreciation, depletion, amortization, and accretion | | 42,821 | | | 9,552 | | | 52,373 | | | 504 | | | 52,877 | | Power operating and maintenance | | — | | | 17,185 | | | 17,185 | | | — | | | 17,185 | | | General and administrative | | 22,747 | | | 7,625 | | | 30,372 | | | 11,753 | | | 42,125 | | Other operating expenses | | 1,420 | | | 4,891 | | | 6,311 | | | 1,308 | | | 7,619 | | | Total operating expenses | | 213,664 | | | 116,575 | | | 330,239 | | | 13,640 | | | 343,879 | | Income (loss) from operations | | $ | 130,038 | | | $ | 5,758 | | | $ | 135,796 | | | $ | (14,140) | | | $ | 121,656 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Capital expenditures | | $ | 61,750 | | | $ | 5,371 | | | $ | 67,121 | | | $ | 19,717 | | | $ | 86,838 | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Three Months Ended June 30, 2025 | | (in thousands) | | Upstream/Midstream | | Power | | Total Reportable Segments | | Corporate and Other | | Total | | Revenues and other operating income | | | | | | | | | | | | Natural gas, NGL, and oil sales | | $ | 199,729 | | | $ | — | | | $ | 199,729 | | | $ | — | | | $ | 199,729 | | | Power revenues | | — | | | 61,924 | | | 61,924 | | | — | | | 61,924 | | | Derivative gains, net | | 112,208 | | | 74,818 | | | 187,026 | | | — | | | 187,026 | | | Marketing revenues | | 6,968 | | | — | | | 6,968 | | | — | | | 6,968 | | | Section 45Q tax credits | | — | | | — | | | — | | | 2,574 | | | 2,574 | | | | | | | | | | | | | | Other | | 140 | | | — | | | 140 | | | — | | | 140 | | | Total revenues and other operating income | | $ | 319,045 | | | $ | 136,742 | | | $ | 455,787 | | | $ | 2,574 | | | $ | 458,361 | | | Operating expenses | | | | | | | | | | | | | | | | | | | | | | | Lease operating and workover | | 34,176 | | | — | | | 34,176 | | | — | | | 34,176 | | | Fuel commodity costs | | — | | | 39,852 | | | 39,852 | | | — | | | 39,852 | | | Purchased power | | — | | | 29,494 | | | 29,494 | | | — | | | 29,494 | | | Marketing expense | | 4,321 | | | 547 | | | 4,868 | | | — | | | 4,868 | | | Taxes other than income | | 13,404 | | | 4,638 | | | 18,042 | | | — | | | 18,042 | | | Gathering and transportation | | 63,026 | | | — | | | 63,026 | | | — | | | 63,026 | | | Depreciation, depletion, amortization, and accretion | | 37,644 | | | 9,536 | | | 47,180 | | | 400 | | | 47,580 | | Power operating and maintenance | | — | | | 18,252 | | | 18,252 | | | — | | | 18,252 | | General and administrative | | 14,782 | | | 4,267 | | | 19,049 | | | 11,430 | | | 30,479 | | Other operating expenses | | 3,403 | | | 434 | | | 3,837 | | | 7,407 | | | 11,244 | | | Total operating expenses | | 170,756 | | | 107,020 | | | 277,776 | | | 19,237 | | | 297,013 | | | Income (loss) from operations | | $ | 148,289 | | | $ | 29,722 | | | $ | 178,011 | | | $ | (16,663) | | | $ | 161,348 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Capital expenditures | | $ | 56,159 | | | $ | 55 | | | $ | 56,214 | | | $ | 10,276 | | | $ | 66,490 | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Six Months Ended June 30, 2026 | | (in thousands) | | Upstream/Midstream | | Power | | Total Reportable Segments | | Corporate and Other | | Total | | Revenues and other operating income | | | | | | | | | | | | Natural gas, NGL, and oil sales | | $ | 509,603 | | | $ | — | | | $ | 509,603 | | | $ | — | | | $ | 509,603 | | Power revenues | | — | | | 143,352 | | | 143,352 | | | — | | | 143,352 | | | Derivative gains, net | | 52,808 | | | 143,556 | | | 196,364 | | | — | | | 196,364 | | | Marketing revenues | | 45,985 | | | — | | | 45,985 | | | 58 | | | 46,043 | | | Section 45Q tax credits | | — | | | — | | | — | | | 6,108 | | | 6,108 | | | | | | | | | | | | | | Other | | 460 | | | — | | | 460 | | | (3,548) | | | (3,088) | | | Total revenues and other operating income | | $ | 608,856 | | | $ | 286,908 | | | $ | 895,764 | | | $ | 2,618 | | | $ | 898,382 | | | Operating expenses | | | | | | | | | | | | | | | | | | | | | | | Lease operating and workover | | 89,557 | | | — | | | 89,557 | | | — | | | 89,557 | | | Fuel commodity costs | | — | | | 99,953 | | | 99,953 | | | — | | | 99,953 | | | Purchased power | | — | | | 56,857 | | | 56,857 | | | — | | | 56,857 | | | Marketing expense | | 27,656 | | | 1,563 | | | 29,219 | | | 91 | | | 29,310 | | | Taxes other than income | | 27,545 | | | 8,536 | | | 36,081 | | | 21 | | | 36,102 | | | Gathering and transportation | | 135,897 | | | — | | | 135,897 | | | — | | | 135,897 | | | Depreciation, depletion, amortization, and accretion | | 83,512 | | | 21,356 | | | 104,868 | | | 950 | | | 105,818 | | Power operating and maintenance | | — | | | 36,864 | | | 36,864 | | | — | | | 36,864 | | | General and administrative | | 43,585 | | | 13,980 | | | 57,565 | | | 24,671 | | | 82,236 | | Other operating expenses | | 6,251 | | | 9,047 | | | 15,298 | | | 2,808 | | | 18,106 | | | Total operating expenses | | 414,003 | | | 248,156 | | | 662,159 | | | 28,541 | | | 690,700 | | Income (loss) from operations | | $ | 194,853 | | | $ | 38,752 | | | $ | 233,605 | | | $ | (25,923) | | | $ | 207,682 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Capital expenditures | | $ | 140,720 | | | $ | 22,221 | | | $ | 162,941 | | | $ | 30,424 | | | $ | 193,365 | | | | | | | | | | | | | | | | | | | | | | | |
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Six Months Ended June 30, 2025 | | (in thousands) | | Upstream/Midstream | | Power | | Total Reportable Segments | | Corporate and Other | | Total | | Revenues and other operating income | | | | | | | | | | | | Natural gas, NGL, and oil sales | | $ | 415,855 | | | $ | — | | | $ | 415,855 | | | $ | — | | | $ | 415,855 | | | Power revenues | | — | | | 105,788 | | | 105,788 | | | — | | | 105,788 | | | Derivative gains (losses), net | | (39,983) | | | 128,626 | | | 88,643 | | | — | | | 88,643 | | | Marketing revenues | | 19,425 | | | — | | | 19,425 | | | — | | | 19,425 | | | Section 45Q tax credits | | — | | | — | | | — | | | 5,881 | | | 5,881 | | | | | | | | | | | | | | Other | | (1,165) | | | — | | | (1,165) | | | — | | | (1,165) | | | Total revenues and other operating income | | $ | 394,132 | | | $ | 234,414 | | | $ | 628,546 | | | $ | 5,881 | | | $ | 634,427 | | | Operating expenses | | | | | | | | | | | | Lease operating and workover | | 69,231 | | | — | | | 69,231 | | | — | | | 69,231 | | | Fuel commodity costs | | — | | | 86,215 | | | 86,215 | | | — | | | 86,215 | | | Purchased power | | — | | | 48,161 | | | 48,161 | | | — | | | 48,161 | | | Marketing expense | | 7,645 | | | 1,143 | | | 8,788 | | | — | | | 8,788 | | | Taxes other than income | | 23,626 | | | 9,206 | | | 32,832 | | | — | | | 32,832 | | | Gathering and transportation | | 118,819 | | | — | | | 118,819 | | | — | | | 118,819 | | | Depreciation, depletion, amortization, and accretion | | 77,135 | | | 19,163 | | | 96,298 | | | 879 | | | 97,177 | | Power operating and maintenance | | — | | | 38,465 | | | 38,465 | | | — | | | 38,465 | | General and administrative | | 27,978 | | | 10,169 | | | 38,147 | | | 20,631 | | | 58,778 | | Other operating expenses | | 3,689 | | | 824 | | | 4,513 | | | 10,197 | | | 14,710 | | | Total operating expenses | | 328,123 | | | 213,346 | | | 541,469 | | | 31,707 | | | 573,176 | | | Income (loss) from operations | | $ | 66,009 | | | $ | 21,068 | | | $ | 87,077 | | | $ | (25,826) | | | $ | 61,251 | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Capital expenditures | | $ | 110,423 | | | $ | 293 | | | $ | 110,716 | | | $ | 13,386 | | | $ | 124,102 | | | | | | | | | | | | | | | | | | | | | | | |
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