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CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands | Mar. 31, 2018 | Sep. 30, 2017
--- | --- | ---
PROPERTY, PLANT AND EQUIPMENT |  |
Utility plant, at cost | $ 2,295,000 | $ 2,241,324
Construction work in progress | 134,816 | 119,318
Solar and wind equipment, real estate properties and other, at cost | 609,894 | 843,142
Construction work in progress | 52,069 | 7,286
Total property, plant and equipment | 3,091,779 | 3,211,070
Accumulated depreciation and amortization, utility plant | (507,536) | (489,122)
Accumulated depreciation and amortization, solar and wind equipment, real estate properties and other | (108,730) | (112,207)
Property, plant and equipment, net | 2,475,513 | 2,609,741
CURRENT ASSETS |  |
Cash and cash equivalents | 4,928 | 2,226
Customer accounts receivable |  |
Billed | 298,824 | 196,467
Unbilled revenues | 55,405 | 7,202
Allowance for doubtful accounts | (5,515) | (5,181)
Regulatory assets | 15,051 | 50,791
Gas in storage, at average cost | 71,169 | 202,063
Materials and supplies, at average cost | 13,943 | 11,944
Prepaid and accrued taxes | 14,395 | 24,764
Derivatives, at fair value | 26,897 | 30,081
Restricted broker margin accounts | 59,970 | 25,827
Assets held for sale | 224,898 | 0
Other | 34,660 | 33,260
Total current assets | 814,625 | 579,444
NONCURRENT ASSETS |  |
Investments in equity method investees | 183,884 | 172,585
Regulatory assets | 352,152 | 375,919
Derivatives, at fair value | 13,616 | 9,164
Available for sale securities | 28,228 | 65,752
Intangible assets, net | 23,173 | 41,084
Other noncurrent assets | 69,549 | 74,818
Total noncurrent assets | 670,602 | 739,322
Total assets | 3,960,740 | 3,928,507
CAPITALIZATION |  |
Common stock, $2.50 par value; authorized 150,000,000 shares; outstanding March 31, 2017 — 87,656,004; September 30, 2017 — 86,555,507 | 225,173 | 222,258
Premium on common stock | 256,158 | 219,696
Accumulated other comprehensive loss, net of tax | (13,788) | (3,256)
Treasury stock at cost and other; shares March 31, 2017 — 2,355,338; September 30, 2017 — 2,347,380 | (84,401) | (70,039)
Retained earnings | 1,084,232 | 867,984
Common stock equity | 1,467,374 | 1,236,643
Long-term debt | 997,925 | 997,080
Total capitalization | 2,465,299 | 2,233,723
CURRENT LIABILITIES |  |
Current maturities of long-term debt | 165,905 | 165,375
Short-term debt | 150,900 | 266,000
Gas purchases payable | 179,044 | 160,115
Gas purchases payable to related parties | 1,151 | 1,152
Accounts payable and other | 63,867 | 96,878
Dividends payable | 23,886 | 23,586
Accrued taxes | 7,541 | 2,031
Regulatory liabilities | 29,169 | 78
New Jersey clean energy program | 5,690 | 14,202
Derivatives, at fair value | 44,792 | 46,544
Disposal Group, Including Discontinued Operation, Liabilities, Current | 4,262 | 0
Customers' credit balances and deposits | 18,261 | 26,957
Total current liabilities | 694,468 | 802,918
NONCURRENT LIABILITIES |  |
Deferred income taxes | 237,838 | 514,708
Deferred investment tax credits | 4,136 | 4,297
Deferred gain | 9,497 | 27,728
Derivatives, at fair value | 23,603 | 11,330
Manufactured gas plant remediation | 142,474 | 149,000
Postemployment employee benefit liability | 129,546 | 128,888
Regulatory liabilities | 217,510 | 14,507
Asset retirement obligation | 27,902 | 31,420
Other | 8,467 | 9,988
Total noncurrent liabilities | 800,973 | 891,866
Commitments and contingent liabilities (Note 12) |  |
Total capitalization and liabilities | $ 3,960,740 | $ 3,928,507

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