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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES | 12 Months Ended
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Dec. 31, 2021
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract] |
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES | SCHEDULE II EVERSOURCE ENERGY AND SUBSIDIARIES VALUATION AND QUALIFYING ACCOUNTS AND RESERVES FOR THE YEARS ENDED DECEMBER 31, 2021, 2020 AND 2019 (Thousands of Dollars)
Column A | Column B | Column C | Column D | Column E
|  | Additions |  |
|  | (1) | (2) |  |
Description: | Balance as of Beginning of Year | Charged to Costs and Expenses | Charged to Other Accounts - Describe (a) | Deductions -Describe (b) | Balance as of End of Year
Eversource: |  |  |  |  |
Reserves Deducted from Assets - |  |  |  |  |
Reserves for Uncollectible Accounts: |  |  |  |  |
| 2021 | $ | 358,851 |  | $ | 60,886 |  | $ | 110,572 |  | $ | 112,903 |  | $ | 417,406 |
| 2020 | 224,821 |  | 53,461 |  | 145,005 |  | 64,436 |  | 358,851 |
| 2019 | 212,723 |  | 63,446 |  | 57,223 |  | 108,571 |  | 224,821 |
CL&P: |  |  |  |  |
Reserves Deducted from Assets - |  |  |  |  |
Reserves for Uncollectible Accounts: |  |  |  |  |
| 2021 | $ | 157,447 |  | $ | 13,495 |  | $ | 57,779 |  | $ | 47,402 |  | $ | 181,319 |
| 2020 | 97,348 |  | 12,882 |  | 71,223 |  | 24,006 |  | 157,447 |
| 2019 | 88,034 |  | 15,947 |  | 38,935 |  | 45,568 |  | 97,348 |
NSTAR Electric: |  |  |  |  |
Reserves Deducted from Assets - |  |  |  |  |
Reserves for Uncollectible Accounts: |  |  |  |  |
| 2021 | $ | 91,583 |  | $ | 16,649 |  | $ | 20,064 |  | $ | 31,291 |  | $ | 97,005 |
| 2020 | 75,406 |  | 15,293 |  | 23,424 |  | 22,540 |  | 91,583 |
| 2019 | 74,516 |  | 25,079 |  | 12,556 |  | 36,745 |  | 75,406 |
PSNH: |  |  |  |  |
Reserves Deducted from Assets - |  |  |  |  |
Reserves for Uncollectible Accounts: |  |  |  |  |
| 2021 | $ | 17,157 |  | $ | 13,113 |  | $ | 3,135 |  | $ | 9,074 |  | $ | 24,331 |
| 2020 | 10,497 |  | 5,164 |  | 7,692 |  | 6,196 |  | 17,157 |
| 2019 | 11,065 |  | 6,726 |  | 872 |  | 8,166 |  | 10,497 |
(a) Amounts relate to uncollectible accounts receivables reserved for that are not charged to bad debt expense. CL&P, NSTAR Electric, NSTAR Gas, EGMA and Yankee Gas are allowed to recover in rates, amounts associated with certain uncollectible hardship accounts receivable. CL&P, NSTAR Electric, PSNH, NSTAR Gas and EGMA are also allowed to recover uncollectible energy supply costs through regulatory tracking mechanisms. Amounts in this column in 2020 also include a $24.2 million increase due to the CMA asset acquisition on October 9, 2020 at Eversource, and an increase due to the adoption of the credit loss accounting standard in 2020 of $23.8 million at Eversource, $22.2 million at CL&P, $0.3 million at PSNH, and a decrease of $1.3 million at NSTAR Electric. (b) Amounts written off, net of recoveries.

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- Definition The entire disclosure for valuation and qualifying accounts and reserves. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-09) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24092-122690 + Details
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