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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Dec. 31, 2022 | Sep. 30, 2022
--- | --- | ---
PROPERTY, PLANT AND EQUIPMENT |  |
Utility plant, at cost | $ 3,627,112 | $ 3,576,691
Construction work in progress | 182,309 | 162,087
Nonutility plant and equipment, at cost | 1,633,823 | 1,577,259
Construction work in progress | 199,330 | 199,679
Total property, plant and equipment | 5,642,574 | 5,515,716
Accumulated depreciation and amortization, utility plant | (676,944) | (659,737)
Accumulated depreciation and amortization, nonutility plant and equipment | (217,098) | (206,053)
Property, plant and equipment, net | 4,748,532 | 4,649,926
CURRENT ASSETS |  |
Cash and cash equivalents | 2,407 | 1,107
Customer accounts receivable |  |
Billed | 370,965 | 222,297
Unbilled revenues | 109,147 | 13,769
Allowance for doubtful accounts | (10,771) | (19,379)
Regulatory assets | 61,355 | 40,086
Natural gas in storage, at average cost | 254,360 | 273,644
Materials and supplies, at average cost | 21,634 | 20,324
Prepaid expenses | 19,028 | 8,572
Prepaid and accrued taxes | 20,568 | 54,501
Derivatives, at fair value | 44,678 | 24,635
Restricted broker margin accounts | 93,173 | 94,261
Other current assets | 25,280 | 22,270
Total current assets | 1,011,824 | 756,087
NONCURRENT ASSETS |  |
Investments in equity method investees | 106,174 | 106,571
Regulatory assets | 495,849 | 500,666
Operating lease assets | 167,129 | 168,520
Derivatives, at fair value | 3,445 | 6,385
Intangible assets, net | 1,818 | 2,348
Software costs | 6,649 | 6,120
Other noncurrent assets | 68,674 | 64,793
Total noncurrent assets | 849,738 | 855,403
Total assets | 6,610,094 | 6,261,416
CAPITALIZATION |  |
Common stock, $2.50 par value; authorized 150,000,000 shares; outstanding shares December 31, 2022 — 96,803,490; September 30, 2022 — 96,249,859 | 241,845 | 241,616
Premium on common stock | 527,846 | 519,697
Accumulated other comprehensive loss, net of tax | (4,522) | (4,826)
Treasury stock at cost and other; shares December 31, 2022 — 148,914; September 30, 2022 — 611,045 | 11,842 | (6,805)
Retained earnings | 1,145,784 | 1,067,528
Common stock equity | 1,922,795 | 1,817,210
Long-term debt | 2,690,886 | 2,485,402
Total capitalization | 4,613,681 | 4,302,612
CURRENT LIABILITIES |  |
Current maturities of long-term debt | 80,115 | 75,069
Short-term debt | 464,450 | 423,950
Natural gas purchases payable | 158,119 | 235,049
Natural gas purchases payable to related parties | 862 | 851
Deferred revenue | 39,553 | 35,547
Accounts payable and other | 110,475 | 156,580
Dividends payable | 37,665 | 37,534
Accrued taxes | 10,498 | 5,130
Regulatory liabilities | 49,382 | 31,090
New Jersey Clean Energy Program | 14,090 | 15,697
Derivatives, at fair value | 48,104 | 49,848
Operating lease liabilities | 4,661 | 4,562
Restricted broker margin accounts | 7,297 | 0
Customers' credit balances and deposits | 40,970 | 33,246
Total current liabilities | 1,066,241 | 1,104,153
NONCURRENT LIABILITIES |  |
Deferred income taxes | 255,073 | 238,928
Deferred investment tax credits | 2,643 | 2,710
Deferred revenue | 49,939 | 753
Derivatives, at fair value | 23,477 | 14,191
Manufactured gas plant remediation | 125,717 | 127,060
Postemployment employee benefit liability | 83,892 | 82,867
Regulatory liabilities | 184,740 | 185,634
Operating lease liabilities | 137,627 | 138,382
Asset retirement obligation | 55,750 | 55,035
Other noncurrent liabilities | 11,314 | 9,091
Total noncurrent liabilities | 930,172 | 854,651
Commitments and contingent liabilities (Note 13) |  |
Total capitalization and liabilities | $ 6,610,094 | $ 6,261,416

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