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SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS AND RESERVES
12 Months Ended
Dec. 31, 2022
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, 2022, 2021 AND 2020
(Thousands of Dollars)
Column AColumn BColumn CColumn DColumn E
  Additions  
  (1)(2)  
Description:Balance as of Beginning of YearCharged to Costs and ExpensesCharged to Other
Accounts -
Describe (a)
 Deductions -Describe (b)Balance as of End of Year
Eversource:
     
Reserves Deducted from Assets -     
Reserves for Uncollectible Accounts:     
 2022$417,406 $61,876 $112,533 $105,518 $486,297 
 2021358,851 60,886 110,572 112,903 417,406 
 2020224,821 53,461 145,005 64,436 358,851 
CL&P:     
Reserves Deducted from Assets -     
Reserves for Uncollectible Accounts:     
 2022$181,319 $15,578 $59,485 $31,062 $225,320 
 2021157,447 13,495 57,779 47,402 181,319 
 202097,348 12,882 71,223 24,006 157,447 
NSTAR Electric:     
Reserves Deducted from Assets -     
Reserves for Uncollectible Accounts:     
 2022$97,005 $21,550 $12,412 $36,009 $94,958 
 202191,583 16,649 20,064 31,291 97,005 
 202075,406 15,293 23,424 22,540 91,583 
PSNH:
     
Reserves Deducted from Assets -     
Reserves for Uncollectible Accounts:     
 2022$24,331 $9,211 $2,539 $6,845 $29,236 
 202117,157 13,113 3,135 9,074 24,331 
 202010,497 5,164 7,692 6,196 17,157 

(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.