CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Current Assets:
Cash and Cash Equivalents	$ 38,165	$ 30,251
Receivables, Net	925,083	847,301
Unbilled Revenues	201,361	168,490
Fuel, Materials, Supplies and Inventory	223,063	328,721
Regulatory Assets	741,868	887,625
Prepayments and Other Current Assets	138,009	215,284
Assets Held for Sale	219,550	0
Total Current Assets	2,487,099	2,477,672
Property, Plant and Equipment, Net	23,617,463	21,350,510
Deferred Debits and Other Assets:
Regulatory Assets	4,497,447	3,638,688
Goodwill	4,427,266	3,519,401
Marketable Securities	585,419	544,642
Other Long-Term Assets	605,692	522,260
Total Deferred Debits and Other Assets	10,115,824	8,224,991
Total Assets	36,220,386	32,053,173
Current Liabilities:
Notes Payable	1,088,087	1,148,500
Long-Term Debt – Current Portion	549,631	773,883
Accounts Payable	1,085,034	884,521
Regulatory Liabilities	128,071	146,787
Other Current Liabilities	738,222	684,914
Total Current Liabilities	3,589,045	3,638,605
Deferred Credits and Other Liabilities:
Accumulated Deferred Income Taxes	3,297,518	5,607,207
Regulatory Liabilities	3,637,273	702,255
Derivative Liabilities	377,257	413,676
Accrued Pension, SERP and PBOP	1,228,091	1,141,514
Other Long-Term Liabilities	1,073,501	853,260
Total Deferred Credits and Other Liabilities	9,613,640	8,717,912
Capitalization:
Long-Term Debt	11,775,889	8,829,354
Preferred Stock Not Subject to Mandatory Redemption	155,570	155,568
Common Shareholders' Equity:
Common Shares	1,669,392	1,669,392
Capital Surplus, Paid In	6,239,940	6,250,224
Retained Earnings	3,561,084	3,175,171
Accumulated Other Comprehensive Loss	(66,403)	(65,282)
Treasury Stock	(317,771)	(317,771)
Common Shareholders' Equity	11,086,242	10,711,734
Total Capitalization	23,017,701	19,696,656
Commitments and Contingencies (Note 11)
Total Liabilities and Capitalization	36,220,386	32,053,173
The Connecticut Light And Power Company
Current Assets:
Cash and Cash Equivalents	6,028	6,579
Receivables, Net	370,676	359,132
Accounts Receivable from Affiliated Companies	28,181	16,851
Unbilled Revenues	54,154	50,373
Materials, Supplies and Inventory	48,438	52,050
Regulatory Assets	200,281	335,526
Prepayments and Other Current Assets	46,926	52,670
Total Current Assets	754,684	873,181
Property, Plant and Equipment, Net	8,271,030	7,632,392
Deferred Debits and Other Assets:
Regulatory Assets	1,444,935	1,391,564
Other Long-Term Assets	159,597	137,907
Total Deferred Debits and Other Assets	1,604,532	1,529,471
Total Assets	10,630,246	10,035,044
Current Liabilities:
Notes Payable to Eversource Parent	69,500	80,100
Long-Term Debt – Current Portion	300,000	250,000
Accounts Payable	367,605	289,532
Accounts Payable to Affiliated Companies	82,201	88,075
Obligations to Third Party Suppliers	52,860	55,520
Regulatory Liabilities	38,967	47,055
Derivative Liabilities	54,392	77,765
Other Current Liabilities	127,234	120,399
Total Current Liabilities	1,092,759	1,008,446
Deferred Credits and Other Liabilities:
Accumulated Deferred Income Taxes	1,103,367	1,987,661
Regulatory Liabilities	1,112,136	100,138
Derivative Liabilities	376,918	412,750
Accrued Pension, SERP and PBOP	354,469	300,208
Other Long-Term Liabilities	128,135	123,244
Total Deferred Credits and Other Liabilities	3,075,025	2,924,001
Capitalization:
Long-Term Debt	2,759,135	2,516,010
Preferred Stock Not Subject to Mandatory Redemption	116,200	116,200
Common Shareholders' Equity:
Common Shares	60,352	60,352
Capital Surplus, Paid In	2,110,765	2,110,714
Retained Earnings	1,415,741	1,299,374
Accumulated Other Comprehensive Loss	269	(53)
Common Shareholders' Equity	3,587,127	3,470,387
Total Capitalization	6,462,462	6,102,597
Commitments and Contingencies (Note 11)
Total Liabilities and Capitalization	10,630,246	10,035,044
NSTAR Electric Company
Current Assets:
Cash and Cash Equivalents	1,763	3,494
Receivables, Net	341,341	312,497
Accounts Receivable from Affiliated Companies	40,723	17,771
Unbilled Revenues	49,865	46,961
Materials, Supplies and Inventory	95,517	70,907
Regulatory Assets	333,882	353,522
Prepayments and Other Current Assets	24,499	56,066
Total Current Assets	887,590	861,218
Property, Plant and Equipment, Net	8,246,494	7,730,096
Deferred Debits and Other Assets:
Regulatory Assets	1,190,575	1,185,037
Prepaid PBOP	126,948	91,607
Other Long-Term Assets	84,766	89,635
Total Deferred Debits and Other Assets	1,402,289	1,366,279
Total Assets	10,536,373	9,957,593
Current Liabilities:
Notes Payable	234,000	126,500
Notes Payable to Eversource Parent	0	51,000
Long-Term Debt – Current Portion	0	400,000
Accounts Payable	340,115	288,634
Accounts Payable to Affiliated Companies	91,260	105,775
Obligations to Third Party Suppliers	88,721	66,371
Renewable Portfolio Standards Compliance Obligations	111,524	95,954
Regulatory Liabilities	79,562	78,541
Other Current Liabilities	79,916	84,933
Total Current Liabilities	1,025,098	1,297,708
Deferred Credits and Other Liabilities:
Accumulated Deferred Income Taxes	1,275,814	2,327,085
Regulatory Liabilities	1,514,451	409,050
Accrued Pension, SERP and PBOP	89,995	128,751
Other Long-Term Liabilities	198,176	164,503
Total Deferred Credits and Other Liabilities	3,078,436	3,029,389
Capitalization:
Long-Term Debt	2,943,759	2,244,653
Preferred Stock Not Subject to Mandatory Redemption	43,000	43,000
Common Shareholders' Equity:
Common Shares	0	0
Capital Surplus, Paid In	1,502,942	1,500,642
Retained Earnings	1,944,961	1,844,195
Accumulated Other Comprehensive Loss	(1,823)	(1,994)
Common Shareholders' Equity	3,446,080	3,342,843
Total Capitalization	6,432,839	5,630,496
Commitments and Contingencies (Note 11)
Total Liabilities and Capitalization	10,536,373	9,957,593
Public Service Company Of New Hampshire
Current Assets:
Cash and Cash Equivalents	900	4,646
Receivables, Net	92,774	84,450
Accounts Receivable from Affiliated Companies	5,297	4,185
Unbilled Revenues	49,448	41,004
Fuel, Materials, Supplies and Inventory	40,285	162,354
Regulatory Assets	130,134	117,240
Prepayments and Other Current Assets	28,931	28,908
Assets Held for Sale	219,550	0
Total Current Assets	567,319	442,787
Property, Plant and Equipment, Net	2,642,274	3,039,313
Deferred Debits and Other Assets:
Regulatory Assets	810,677	245,525
Other Long-Term Assets	42,391	37,720
Total Deferred Debits and Other Assets	853,068	283,245
Total Assets	4,062,661	3,765,345
Current Liabilities:
Notes Payable to Eversource Parent	262,900	160,900
Long-Term Debt – Current Portion	110,000	70,000
Accounts Payable	128,685	85,716
Accounts Payable to Affiliated Companies	24,676	29,154
Dividends Payable to Eversource Parent	150,000	0
Regulatory Liabilities	6,251	12,659
Other Current Liabilities	67,924	43,253
Total Current Liabilities	750,436	401,682
Deferred Credits and Other Liabilities:
Accumulated Deferred Income Taxes	443,468	785,385
Regulatory Liabilities	444,397	44,779
Accrued Pension, SERP and PBOP	124,639	94,652
Other Long-Term Liabilities	56,689	49,442
Total Deferred Credits and Other Liabilities	1,069,193	974,258
Capitalization:
Long-Term Debt	892,438	1,002,048
Common Shareholders' Equity:
Common Shares	0	0
Capital Surplus, Paid In	843,134	843,134
Retained Earnings	511,382	549,286
Accumulated Other Comprehensive Loss	(3,922)	(5,063)
Common Shareholders' Equity	1,350,594	1,387,357
Total Capitalization	2,243,032	2,389,405
Commitments and Contingencies (Note 11)
Total Liabilities and Capitalization	$ 4,062,661	$ 3,765,345