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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Jun. 30, 2021 | Jun. 30, 2020
CASH FLOWS FROM OPERATING ACTIVITIES |  |
Net income | $ 119,023 | $ 130,300
Adjustments to reconcile net income to cash flows from operating activities |  |
Unrealized loss (gain) on derivative instruments | 13,627 | (21,827)
Other than temporary impairment | 92,000 | 0
Depreciation and amortization | 81,977 | 80,025
Amortization of acquired wholesale energy contracts | 4,000 | 4,356
Allowance for equity used during construction | (16,820) | (12,328)
Allowance for doubtful accounts | 15,288 | 1,657
Non cash lease expense | 3,048 | 2,864
Deferred income taxes | 4,816 | 27,014
Manufactured gas plant remediation costs | (23,775) | (6,629)
Equity in earnings, net of distributions received from equity investees and impairments | (3,469) | (4,985)
Cost of removal - asset retirement obligations | (768) | (183)
Contributions to postemployment benefit plans | (2,347) | (5,969)
Taxes related to stock-based compensation | (149) | 644
Changes in: |  |
Components of working capital | (9,805) | (17,397)
Other noncurrent assets | 53,430 | 10,177
Other noncurrent liabilities | 11,720 | (4,936)
Cash flows from operating activities | 341,796 | 182,783
Expenditures for: |  |
Cost of removal | (37,922) | (24,343)
Acquisition of assets, net of cash acquired of $5.1 million | 0 | (523,647)
Distribution from equity investees in excess of equity in earnings | 733 | 1,411
Investments in equity investees | (690) | (1,491)
Cash flows used in investing activities | (429,870) | (890,966)
CASH FLOWS (USED IN) FROM FINANCING ACTIVITIES |  |
Proceeds from long-term debt | 0 | 50,000
Payments of long-term debt | (10,463) | (11,947)
Proceeds from term loan | 0 | 350,000
Payments of term loan | 0 | (212,900)
Proceeds from short-term debt, net | 50,950 | 390,562
Proceeds from sale leaseback transaction - solar | 17,673 | 42,927
Proceeds from sale leaseback transaction | 0 | 4,000
Payments of common stock dividends | (90,377) | (86,709)
Proceeds from issuance of common stock - public equity offering | 0 | 212,900
Cash settlement of equity forward agreement | (2,823) | 0
Proceeds from issuance of common stock - DRP | 11,520 | 14,498
Tax withholding payments related to net settled stock compensation | (1,819) | (3,966)
Cash flows (used in) from financing activities | (25,339) | 749,365
Change in cash, cash equivalents and restricted cash | (113,413) | 41,182
Cash, cash equivalents and restricted cash at beginning of period | 119,423 | 4,063
Cash, cash equivalents and restricted cash at end of period | 6,010 | 45,245
CHANGES IN COMPONENTS OF WORKING CAPITAL |  |
Receivables | (75,730) | (3,019)
Inventories | 42,639 | 42,566
Recovery of natural gas costs | (19,208) | (5,722)
Natural gas purchases payable | 20,073 | (55,594)
Natural gas purchases payable - related parties | 72 | 1
Accounts payable and other | 12,655 | (13,084)
Prepaid expenses | (3,624) | 1,487
Prepaid and accrued taxes | (7,236) | (991)
Restricted broker margin accounts | 25,308 | 11,900
Customers' credit balances and deposits | (3,235) | (7,060)
Other current assets | (1,519) | 12,119
Total | (9,805) | (17,397)
Cash paid for: |  |
Interest (net of amounts capitalized) | 66,322 | 47,642
Income taxes | 5,357 | 1,127
Accrued capital expenditures | 36,988 | 20,814
Utility Plant |  |
Expenditures for: |  |
Payments to acquire PP&E | (289,205) | (213,667)
Solar Equipment |  |
Expenditures for: |  |
Payments to acquire PP&E | (51,545) | (110,968)
Storage and Transportation and other |  |
Expenditures for: |  |
Payments to acquire PP&E | $ (51,241) | $ (18,261)

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