SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Allowance for Uncollectible Accounts

The activity in the allowance for uncollectible accounts by portfolio segment as of March 31st is as follows:

	Eversource						CL&P						NSTAR Electric						PSNH
(Millions of Dollars)	Hardship Accounts		Retail (Non-Hardship), Wholesale, and Other		Total Allowance		Hardship Accounts		Retail (Non-Hardship), Wholesale, and Other		Total Allowance		Hardship Accounts		Retail (Non-Hardship), Wholesale, and Other		Total Allowance		Total Allowance
Three Months Ended 2024
Beginning Balance	$	366.8	$	187.7	$	554.5	$	259.7	$	36.3	$	296.0	$	43.6	$	53.4	$	97.0	$	14.3
Uncollectible Expense	—		16.4		16.4		—		3.5		3.5		—		6.1		6.1		1.2
Uncollectible Costs Deferred (1)	27.5		11.4		38.9		22.7		2.7		25.4		(0.8)		4.4		3.6		1.3
Write-Offs	(15.1)		(28.5)		(43.6)		(10.8)		(7.7)		(18.5)		(1.0)		(9.2)		(10.2)		(3.2)
Recoveries Collected	0.2		3.7		3.9		0.2		1.2		1.4		—		1.2		1.2		0.2
Ending Balance	$	379.4	$	190.7	$	570.1	$	271.8	$	36.0	$	307.8	$	41.8	$	55.9	$	97.7	$	13.8

	Eversource						CL&P						NSTAR Electric						PSNH
(Millions of Dollars)	Hardship Accounts		Retail (Non-Hardship), Wholesale, and Other		Total Allowance		Hardship Accounts		Retail (Non-Hardship), Wholesale, and Other		Total Allowance		Hardship Accounts		Retail (Non-Hardship), Wholesale, and Other		Total Allowance		Total Allowance
Three Months Ended 2023
Beginning Balance	$	284.4	$	201.9	$	486.3	$	188.9	$	36.4	$	225.3	$	43.7	$	51.3	$	95.0	$	29.2
Uncollectible Expense	—		22.8		22.8		—		3.9		3.9		—		4.7		4.7		5.1
Uncollectible Costs Deferred (1)	43.7		14.3		58.0		34.3		2.7		37.0		(1.3)		5.4		4.1		1.2
Write-Offs	(9.7)		(26.3)		(36.0)		(7.3)		(7.0)		(14.3)		(0.4)		(10.3)		(10.7)		(2.2)
Recoveries Collected	0.3		3.7		4.0		0.3		1.2		1.5		—		1.5		1.5		0.2
Ending Balance	$	318.7	$	216.4	$	535.1	$	216.2	$	37.2	$	253.4	$	42.0	$	52.6	$	94.6	$	33.5

(1) These expected credit losses are deferred as regulatory costs on the balance sheets, as these amounts are ultimately recovered in rates. Amounts include uncollectible costs for hardship accounts and other customer receivables, including uncollectible amounts related to uncollectible energy supply costs and COVID-19.

Components of Other Income, Net

The components of Other Income, Net on the statements of income were as follows:

	For the Three Months Ended
	March 31, 2024								March 31, 2023
(Millions of Dollars)	Eversource		CL&P		NSTAR Electric		PSNH		Eversource		CL&P		NSTAR Electric		PSNH
Pension, SERP and PBOP Non-Service    Income Components, Net of Deferred Portion	$	27.8	$	6.5	$	12.3	$	3.6	$	34.8	$	9.5	$	14.7	$	4.2
AFUDC Equity	26.8		6.0		16.2		1.9		15.5		4.1		9.5		0.7
Equity in Earnings of Unconsolidated Affiliates	7.8		—		0.2		—		3.8		—		0.1		—
Investment (Loss)/Income	(0.8)		(0.7)		0.4		(0.2)		(1.7)		(0.6)		(0.5)		(0.1)
Interest Income	30.0		4.7		18.0		1.8		23.1		1.9		16.0		0.9
Other (1)	(0.6)		—		—		—		13.5		—		0.1		—
Total Other Income, Net	$	91.0	$	16.5	$	47.1	$	7.1	$	89.0	$	14.9	$	39.9	$	5.7

(1)    Eversource’s equity method investment in a renewable energy fund was liquidated in March 2023. Liquidation proceeds in excess of the carrying value were recorded in 2023 within Other in the table above. See Note 1E, "Summary of Significant Accounting Policies - Investments in Unconsolidated Affiliates," for further information.

Investments in Unconsolidated Affiliates

Eversource's investments included the following:

				Investment Balance
(Millions of Dollars)	Ownership Interest			As of March 31, 2024		As of December 31, 2023
Offshore Wind Business	50%	-	100%	$	596.4	$	515.5
Natural Gas Pipeline - Algonquin Gas Transmission, LLC	15%			115.9		116.0
Other	various			29.4		29.0
Total Investments in Unconsolidated Affiliates				$	741.7	$	660.5

Other Taxes

These gross receipts taxes are recorded separately with collections in Operating Revenues and with payments in Taxes Other Than Income Taxes on the statements of income as follows:

	For the Three Months Ended
(Millions of Dollars)	March 31, 2024		March 31, 2023
Eversource	$	53.3	$	55.0
CL&P	43.9		43.1

Non-cash Investing Activities

Non-cash investing activities include plant additions included in Accounts Payable as follows:

(Millions of Dollars)	As of March 31, 2024		As of March 31, 2023
Eversource	$	453.6	$	400.8
CL&P	112.8		101.9
NSTAR Electric	132.7		117.4
PSNH	75.2		54.6

Reconciliation of Cash Balances to Cash and Restricted Cash

The following table reconciles cash as reported on the balance sheets to the cash and restricted cash balance as reported on the statements of cash flows:

	As of March 31, 2024								As of December 31, 2023
(Millions of Dollars)	Eversource		CL&P		NSTAR Electric		PSNH		Eversource		CL&P		NSTAR Electric		PSNH
Cash as reported on the Balance Sheets	$	259.2	$	29.0	$	20.2	$	14.1	$	53.9	$	10.2	$	6.7	$	0.2
Restricted cash included in:
Special Deposits	68.7		2.1		16.3		17.0		81.5		2.0		16.1		31.6
Marketable Securities	16.0		—		—		—		13.7		—		—		—
Other Long-Term Assets	16.5		—		—		3.2		17.3		—		—		3.2
Cash and Restricted Cash as reported on the Statements of Cash Flows	$	360.4	$	31.1	$	36.5	$	34.3	$	166.4	$	12.2	$	22.8	$	35.0