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REGULATION (Tables) | 6 Months Ended
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Mar. 31, 2020
Regulated Operations [Abstract] |
Schedule of Regulator Liabilities | Regulatory assets and liabilities included on the Unaudited Condensed Consolidated Balance Sheets are comprised of the following:
(Thousands) | March 31, 2020 | September 30, 2019
Regulatory assets-current |  |
New Jersey Clean Energy Program | $ | 5,868 |  | $ | 15,468 |
Under-recovered gas costs | 9,246 |  | 9,506 |
Conservation Incentive Program | 23,481 |  | 3,371 |
Derivatives at fair value, net | 16,231 |  | 4,526 |
Other | 2,040 |  | — |
Total current regulatory assets | $ | 56,866 |  | $ | 32,871 |
Regulatory assets-noncurrent |  |
Environmental remediation costs |  |
Expended, net of recoveries | $ | 35,856 |  | $ | 38,351 |
Liability for future expenditures | 128,868 |  | 131,080 |
Deferred income taxes | 21,049 |  | 19,631 |
Derivatives at fair value, net | — |  | 486 |
SAVEGREEN | 12,101 |  | 10,201 |
Postemployment and other benefit costs | 165,577 |  | 212,461 |
Deferred storm damage costs | 7,601 |  | 8,687 |
Cost of removal | 62,488 |  | 65,660 |
Other noncurrent regulatory assets | 16,499 |  | 10,080 |
Total noncurrent regulatory assets | $ | 450,039 |  | $ | 496,637 |
Regulatory liabilities-noncurrent |  |
Tax Act impact (1) | $ | 197,928 |  | $ | 200,417 |
New Jersey Clean Energy Program | 1,318 |  | 197 |
Other noncurrent regulatory liabilities | 491 |  | 1,821 |
Total noncurrent regulatory liabilities | $ | 199,737 |  | $ | 202,435 |
(1) Reflects the re-measurement and subsequent amortization of NJNG's net deferred tax liabilities as a result of the change in federal tax rates enacted in the Tax Act.
Schedule of Regulatory Assets | Regulatory assets and liabilities included on the Unaudited Condensed Consolidated Balance Sheets are comprised of the following:
(Thousands) | March 31, 2020 | September 30, 2019
Regulatory assets-current |  |
New Jersey Clean Energy Program | $ | 5,868 |  | $ | 15,468 |
Under-recovered gas costs | 9,246 |  | 9,506 |
Conservation Incentive Program | 23,481 |  | 3,371 |
Derivatives at fair value, net | 16,231 |  | 4,526 |
Other | 2,040 |  | — |
Total current regulatory assets | $ | 56,866 |  | $ | 32,871 |
Regulatory assets-noncurrent |  |
Environmental remediation costs |  |
Expended, net of recoveries | $ | 35,856 |  | $ | 38,351 |
Liability for future expenditures | 128,868 |  | 131,080 |
Deferred income taxes | 21,049 |  | 19,631 |
Derivatives at fair value, net | — |  | 486 |
SAVEGREEN | 12,101 |  | 10,201 |
Postemployment and other benefit costs | 165,577 |  | 212,461 |
Deferred storm damage costs | 7,601 |  | 8,687 |
Cost of removal | 62,488 |  | 65,660 |
Other noncurrent regulatory assets | 16,499 |  | 10,080 |
Total noncurrent regulatory assets | $ | 450,039 |  | $ | 496,637 |
Regulatory liabilities-noncurrent |  |
Tax Act impact (1) | $ | 197,928 |  | $ | 200,417 |
New Jersey Clean Energy Program | 1,318 |  | 197 |
Other noncurrent regulatory liabilities | 491 |  | 1,821 |
Total noncurrent regulatory liabilities | $ | 199,737 |  | $ | 202,435 |
(1) Reflects the re-measurement and subsequent amortization of NJNG's net deferred tax liabilities as a result of the change in federal tax rates enacted in the Tax Act.

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