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CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands | Mar. 31, 2024 | Sep. 30, 2023
--- | --- | ---
PROPERTY, PLANT AND EQUIPMENT |  |
Utility plant, at cost | $ 4,012,235 | $ 3,843,037
Construction work in progress | 223,421 | 237,428
Nonutility plant and equipment, at cost | 1,791,100 | 1,767,306
Construction work in progress | 171,396 | 142,768
Total property, plant and equipment | 6,198,152 | 5,990,539
Accumulated depreciation and amortization, utility plant | (753,750) | (714,087)
Accumulated depreciation and amortization, nonutility plant and equipment | (278,854) | (254,397)
Property, plant and equipment, net | 5,165,548 | 5,022,055
CURRENT ASSETS |  |
Cash and cash equivalents | 5,036 | 954
Customer accounts receivable |  |
Billed | 185,069 | 97,540
Unbilled revenues | 74,456 | 19,100
Allowance for doubtful accounts | (9,576) | (11,036)
Regulatory assets | 93,887 | 73,587
Natural gas in storage, at average cost | 80,996 | 199,501
Materials and supplies, at average cost | 30,361 | 27,022
Prepaid expenses | 16,091 | 9,741
Prepaid taxes | 18,299 | 43,046
Derivatives, at fair value | 14,056 | 30,755
Restricted broker margin accounts | 19,310 | 20,796
Other current assets | 25,726 | 21,071
Total current assets | 553,711 | 532,077
NONCURRENT ASSETS |  |
Investments in equity method investees | 101,778 | 104,134
Regulatory assets | 535,104 | 584,830
Operating lease assets | 177,176 | 175,740
Derivatives, at fair value | 910 | 1,564
Software costs | 9,734 | 8,375
Deferred income taxes | 22,848 | 28,383
Postemployment employee benefit assets | 18,618 | 18,684
Other noncurrent assets | 61,950 | 61,654
Total noncurrent assets | 928,118 | 983,364
Total assets | 6,647,377 | 6,537,496
CAPITALIZATION |  |
Common stock, $2.50 par value; authorized 150,000,000 shares; outstanding shares March 31, 2024 — 98,744,915; September 30, 2023 — 97,584,455 | 246,367 | 243,458
Premium on common stock | 604,009 | 558,654
Accumulated other comprehensive income (loss), net of tax | 322 | (9,959)
Treasury stock at cost and other; shares March 31, 2024 — 16,302; September 30, 2023 — 13,041 | 22,936 | 20,748
Retained earnings | 1,305,591 | 1,177,834
Common stock equity | 2,179,225 | 1,990,735
Long-term debt | 2,726,221 | 2,768,017
Total capitalization | 4,905,446 | 4,758,752
CURRENT LIABILITIES |  |
Current maturities of long-term debt | 148,375 | 116,155
Short-term debt | 196,150 | 252,100
Natural gas purchases payable | 64,455 | 51,277
Natural gas purchases payable to related parties | 859 | 859
Deferred revenue | 109,698 | 61,404
Accounts payable and other | 127,159 | 151,790
Dividends payable | 41,290 | 40,981
Accrued taxes | 16,048 | 10,090
Regulatory liabilities | 33,163 | 32,287
New Jersey Clean Energy Program | 6,827 | 15,804
Derivatives, at fair value | 10,725 | 16,145
Operating lease liabilities | 4,780 | 4,772
Restricted broker margin accounts | 4,689 | 8,029
Customers' credit balances and deposits | 24,878 | 44,910
Total current liabilities | 789,096 | 806,603
NONCURRENT LIABILITIES |  |
Deferred income taxes | 330,805 | 285,427
Deferred investment tax credits | 2,295 | 2,434
Deferred revenue | 612 | 659
Derivatives, at fair value | 13,791 | 7,967
Manufactured gas plant remediation | 157,813 | 169,390
Postemployment employee benefit liability | 42,333 | 102,528
Regulatory liabilities | 178,276 | 180,458
Operating lease liabilities | 150,971 | 148,023
Asset retirement obligations | 62,817 | 61,993
Other noncurrent liabilities | 13,122 | 13,262
Total noncurrent liabilities | 952,835 | 972,141
Commitments and contingent liabilities (Note 13) |  |
Total capitalization and liabilities | 6,647,377 | 6,537,496
Related Party |  |
CURRENT LIABILITIES |  |
Natural gas purchases payable to related parties | $ 859 | $ 859

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