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CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES |  |  |
Net income | $ 274,922 | $ 117,890 | $ 163,007
Adjustments to reconcile net income to cash flows from operating activities |  |  |
Unrealized (gain) loss on derivative instruments | (59,906) | 54,203 | (9,644)
Impairment of equity method investment | 0 | 92,000 | 0
Depreciation and amortization | 129,249 | 111,387 | 107,368
Amortization of acquired wholesale energy contracts | 2,561 | 4,604 | 4,924
Allowance for equity used during construction | (11,243) | (20,303) | (17,053)
Allowance for doubtful accounts | 2,401 | 18,986 | 2,238
Non-cash lease expense | 4,850 | 3,920 | 3,851
Deferred income taxes | 81,659 | 23,796 | 34,346
Equivalent value of ITCs recognized on equipment financing | (7,542) | (6,482) | (6,482)
Manufactured gas plant remediation costs | (17,538) | (17,532) | (7,651)
Equity in earnings, net of distributions received from equity investees | 0 | (3,046) | (5,848)
Cost of removal - asset retirement obligations | (1,289) | (1,129) | (245)
Contributions to postemployment benefit plans | (6,785) | (7,669) | (9,032)
Taxes related to stock-based compensation | (144) | (159) | 647
Changes in: |  |  |
Components of working capital | (77,687) | 10,254 | (8,096)
Other noncurrent assets | (38,424) | 13,715 | (44,129)
Other noncurrent liabilities | 48,396 | (3,481) | 5,280
Cash flows from operating activities | 323,480 | 390,954 | 213,481
Expenditures for: |  |  |
Cost of removal | (39,293) | (50,316) | (22,059)
Acquisition of assets, net of cash acquired of $5.1 million | 0 | 0 | (523,647)
Distribution from equity investees in excess of equity in earnings | 2,336 | 3,183 | 1,907
Investments in equity investees, net of return of capital | 5,479 |  |
Investments in equity investees, net of return of capital |  | (690) | (2,117)
Cash flows used in investing activities | (590,613) | (622,117) | (994,025)
CASH FLOWS FROM FINANCING ACTIVITIES |  |  |
Proceeds from long-term debt | 360,000 | 0 | 660,000
Payments of long-term debt | (68,343) | (18,007) | (20,286)
Proceeds from term loan | 150,000 | 0 | 350,000
Payments of term loan | 0 | 0 | (350,000)
(Payments of) proceeds from short-term debt, net | (103,350) | 251,950 | 99,900
Proceeds from sale leaseback transactions - solar | 24,071 | 17,673 | 42,927
Proceeds from sale leaseback transactions - natural gas meters | 17,300 | 0 | 4,000
Payments of common stock dividends | (127,704) | (116,960) | (117,804)
Proceeds from equity offering | 0 | 0 | 212,900
Cash settlement of equity forward agreement | 0 | (2,823) | 0
Proceeds from issuance of common stock - DRP | 14,745 | 15,105 | 18,080
Purchases of treasury stock | 0 | (27,217) | 0
Tax withholding payments related to net settled stock compensation | (4,177) | (1,938) | (3,813)
Cash flows from financing activities | 262,542 | 117,783 | 895,904
Change in cash, cash equivalents and restricted cash | (4,591) | (113,380) | 115,360
Cash, cash equivalents and restricted cash at beginning of period | 6,043 | 119,423 | 4,063
Cash, cash equivalents and restricted cash at end of period | 1,452 | 6,043 | 119,423
CHANGES IN COMPONENTS OF WORKING CAPITAL |  |  |
Receivables | (16,658) | (81,366) | 5,065
Inventories | (80,801) | (25,257) | (3,254)
Recovery of natural gas costs | 1,037 | (13,124) | 17,479
Natural gas purchases payable | 66,352 | 72,752 | (41,326)
Natural gas purchases payable - related parties | (10) | 70 | 1
Deferred revenue | 33,802 | (1,763) | 1,922
Accounts payable and other | (34,259) | 31,826 | 18,468
Prepaid expenses | (406) | (1,527) | 2,548
Prepaid and accrued taxes | (1,516) | (3,449) | (2,376)
Restricted broker margin accounts | (51,165) | 28,013 | (6,097)
Customers’ credit balances and deposits | 660 | 6,652 | (1,182)
Other current assets (liabilities) | 5,277 | (2,573) | 656
Total | (77,687) | 10,254 | (8,096)
Cash paid for: |  |  |
Interest (net of amounts capitalized) | 84,375 | 78,650 | 66,146
Income taxes | 4,252 | 6,381 | 7,594
Accrued capital expenditures | 34,674 | 64,626 | 19,434
Utility plant |  |  |
Expenditures for: |  |  |
Payments to acquire PP&E | (259,081) | (376,312) | (290,040)
Solar equipment |  |  |
Expenditures for: |  |  |
Payments to acquire PP&E | (146,676) | (87,852) | (133,841)
Storage and Transportation and other |  |  |
Expenditures for: |  |  |
Payments to acquire PP&E | $ (153,378) | $ (110,130) | $ (24,228)

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- Definition The cash outflow to repay long-term debt that is not secured by collateral. Excludes repayments of tax exempt unsecured debt. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585 + Details
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