CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Current Assets:
Cash and Cash Equivalents	$ 125,761	$ 30,251
Receivables, Net	919,959	847,301
Unbilled Revenues	146,634	168,490
Fuel, Materials, Supplies and Inventory	305,035	328,721
Regulatory Assets	746,142	887,625
Prepayments and Other Current Assets	159,939	215,284
Total Current Assets	2,403,470	2,477,672
Property, Plant and Equipment, Net	22,537,304	21,350,510
Deferred Debits and Other Assets:
Regulatory Assets	3,505,901	3,638,688
Goodwill	3,519,401	3,519,401
Marketable Securities	570,255	544,642
Other Long-Term Assets	627,289	522,260
Total Deferred Debits and Other Assets	8,222,846	8,224,991
Total Assets	33,163,620	32,053,173
Current Liabilities:
Notes Payable	18,238	1,148,500
Long-Term Debt – Current Portion	957,697	773,883
Accounts Payable	794,195	884,521
Obligations to Third Party Suppliers	149,789	122,806
Regulatory Liabilities	170,215	146,787
Other Current Liabilities	530,297	562,108
Total Current Liabilities	2,620,431	3,638,605
Deferred Credits and Other Liabilities:
Accumulated Deferred Income Taxes	6,001,589	5,607,207
Regulatory Liabilities	700,207	702,255
Derivative Liabilities	391,910	413,676
Accrued Pension and SERP	946,629	1,141,514
Other Long-Term Liabilities	881,056	853,260
Total Deferred Credits and Other Liabilities	8,921,391	8,717,912
Capitalization:
Long-Term Debt	10,468,193	8,829,354
Noncontrolling Interest – Preferred Stock of Subsidiaries	155,568	155,568
Common Shareholders' Equity:
Common Shares	1,669,392	1,669,392
Capital Surplus, Paid In	6,235,846	6,250,224
Retained Earnings	3,474,185	3,175,171
Accumulated Other Comprehensive Loss	(63,615)	(65,282)
Treasury Stock	(317,771)	(317,771)
Common Stockholder's Equity	10,998,037	10,711,734
Total Capitalization	21,621,798	19,696,656
Total Liabilities and Capitalization	33,163,620	32,053,173
The Connecticut Light And Power Company
Current Assets:
Cash and Cash Equivalents	9,364	6,579
Receivables, Net	404,065	359,132
Accounts Receivable from Affiliated Companies	29,287	16,851
Unbilled Revenues	48,625	50,373
Materials, Supplies and Inventory	44,516	52,050
Regulatory Assets	274,982	335,526
Prepaid Property Taxes	55,375	19,678
Prepayments and Other Current Assets	13,832	32,992
Total Current Assets	880,046	873,181
Property, Plant and Equipment, Net	8,107,957	7,632,392
Deferred Debits and Other Assets:
Regulatory Assets	1,312,191	1,391,564
Other Long-Term Assets	145,246	137,907
Total Deferred Debits and Other Assets	1,457,437	1,529,471
Total Assets	10,445,440	10,035,044
Current Liabilities:
Notes Payable to Eversource Parent	0	80,100
Long-Term Debt – Current Portion	300,000	250,000
Accounts Payable	292,234	289,532
Accounts Payable to Affiliated Companies	80,899	88,075
Obligations to Third Party Suppliers	52,865	55,520
Accrued Taxes	64,332	16,090
Regulatory Liabilities	69,296	47,055
Derivative Liabilities	59,895	77,765
Other Current Liabilities	99,467	104,309
Total Current Liabilities	1,018,988	1,008,446
Deferred Credits and Other Liabilities:
Accumulated Deferred Income Taxes	2,089,480	1,987,661
Regulatory Liabilities	98,777	100,138
Derivative Liabilities	391,758	412,750
Accrued Pension and SERP	297,492	300,208
Other Long-Term Liabilities	134,870	123,244
Total Deferred Credits and Other Liabilities	3,012,377	2,924,001
Capitalization:
Long-Term Debt	2,758,851	2,516,010
Noncontrolling Interest – Preferred Stock of Subsidiaries	116,200	116,200
Common Shareholders' Equity:
Common Shares	60,352	60,352
Capital Surplus, Paid In	2,110,752	2,110,714
Retained Earnings	1,367,650	1,299,374
Accumulated Other Comprehensive Loss	270	(53)
Common Stockholder's Equity	3,539,024	3,470,387
Total Capitalization	6,414,075	6,102,597
Total Liabilities and Capitalization	10,445,440	10,035,044
NSTAR Electric Company
Current Assets:
Cash and Cash Equivalents	89,915	3,494
Receivables, Net	322,193	257,557
Accounts Receivable from Affiliated Companies	13,632	8,581
Unbilled Revenues	39,160	31,632
Taxes Receivable	0	39,738
Fuel, Materials, Supplies and Inventory	53,203	62,288
Regulatory Assets	230,620	289,400
Prepayments and Other Current Assets	16,550	14,906
Total Current Assets	765,273	707,596
Property, Plant and Equipment, Net	6,268,689	6,051,835
Deferred Debits and Other Assets:
Regulatory Assets	1,049,324	1,057,746
Prepaid PBOP	115,367	95,073
Other Long-Term Assets	79,653	60,572
Total Deferred Debits and Other Assets	1,244,344	1,213,391
Total Assets	8,278,306	7,972,822
Current Liabilities:
Notes Payable	0	126,500
Long-Term Debt – Current Portion	43,814	400,000
Accounts Payable	198,251	232,599
Accounts Payable to Affiliated Companies	81,953	91,532
Obligations to Third Party Suppliers	86,346	55,863
Accrued Taxes	32,021	3,922
Renewable Portfolio Standards Compliance Obligations	69,527	75,571
Regulatory Liabilities	65,520	63,653
Other Current Liabilities	58,628	67,200
Total Current Liabilities	636,060	1,116,840
Deferred Credits and Other Liabilities:
Accumulated Deferred Income Taxes	1,910,328	1,836,292
Regulatory Liabilities	392,851	391,823
Accrued Pension and SERP	39,830	111,827
Other Long-Term Liabilities	135,613	123,194
Total Deferred Credits and Other Liabilities	2,478,622	2,463,136
Capitalization:
Long-Term Debt	2,382,392	1,678,116
Noncontrolling Interest – Preferred Stock of Subsidiaries	43,000	43,000
Common Shareholders' Equity:
Common Shares	0	0
Capital Surplus, Paid In	1,047,678	1,045,378
Retained Earnings	1,690,198	1,625,984
Accumulated Other Comprehensive Loss	356	368
Common Stockholder's Equity	2,738,232	2,671,730
Total Capitalization	5,163,624	4,392,846
Total Liabilities and Capitalization	8,278,306	7,972,822
Public Service Company Of New Hampshire
Current Assets:
Cash and Cash Equivalents	597	4,646
Receivables, Net	93,299	84,450
Accounts Receivable from Affiliated Companies	24,331	4,185
Unbilled Revenues	37,133	41,004
Fuel, Materials, Supplies and Inventory	158,091	162,354
Regulatory Assets	112,465	117,240
Prepayments and Other Current Assets	3,797	28,908
Total Current Assets	429,713	442,787
Property, Plant and Equipment, Net	3,167,905	3,039,313
Deferred Debits and Other Assets:
Regulatory Assets	244,561	245,525
Other Long-Term Assets	51,740	37,720
Total Deferred Debits and Other Assets	296,301	283,245
Total Assets	3,893,919	3,765,345
Current Liabilities:
Notes Payable to Eversource Parent	202,300	160,900
Long-Term Debt – Current Portion	110,000	70,000
Accounts Payable	92,201	85,716
Accounts Payable to Affiliated Companies	42,788	29,154
Regulatory Liabilities	7,923	12,659
Other Current Liabilities	61,210	43,253
Total Current Liabilities	516,422	401,682
Deferred Credits and Other Liabilities:
Accumulated Deferred Income Taxes	827,412	785,385
Regulatory Liabilities	40,822	44,779
Accrued Pension and SERP	98,553	94,652
Other Long-Term Liabilities	54,131	49,442
Total Deferred Credits and Other Liabilities	1,020,918	974,258
Capitalization:
Long-Term Debt	892,581	1,002,048
Common Shareholders' Equity:
Common Shares	0	0
Capital Surplus, Paid In	843,134	843,134
Retained Earnings	625,012	549,286
Accumulated Other Comprehensive Loss	(4,148)	(5,063)
Common Stockholder's Equity	1,463,998	1,387,357
Total Capitalization	2,356,579	2,389,405
Total Liabilities and Capitalization	3,893,919	3,765,345
Western Massachusetts Electric Company
Current Assets:
Cash and Cash Equivalents	0	0
Receivables, Net	58,034	54,940
Accounts Receivable from Affiliated Companies	23,440	14,425
Unbilled Revenues	15,000	15,329
Fuel, Materials, Supplies and Inventory	6,221	8,618
Regulatory Assets	60,606	64,123
Prepayments and Other Current Assets	1,297	2,595
Total Current Assets	164,598	160,030
Property, Plant and Equipment, Net	1,769,566	1,678,262
Deferred Debits and Other Assets:
Regulatory Assets	121,796	127,291
Other Long-Term Assets	38,934	29,062
Total Deferred Debits and Other Assets	160,730	156,353
Total Assets	2,094,894	1,994,645
Current Liabilities:
Notes Payable to Eversource Parent	96,900	51,000
Accounts Payable	58,518	56,036
Accounts Payable to Affiliated Companies	22,181	19,478
Obligations to Third Party Suppliers	9,736	10,508
Renewable Portfolio Standards Compliance Obligations	16,144	20,383
Regulatory Liabilities	10,236	14,888
Other Current Liabilities	13,020	14,984
Total Current Liabilities	226,735	187,277
Deferred Credits and Other Liabilities:
Accumulated Deferred Income Taxes	519,998	490,793
Regulatory Liabilities	22,726	17,227
Accrued Pension and SERP	18,038	20,390
Other Long-Term Liabilities	45,831	41,308
Total Deferred Credits and Other Liabilities	606,593	569,718
Capitalization:
Long-Term Debt	566,172	566,536
Common Shareholders' Equity:
Common Shares	10,866	10,866
Capital Surplus, Paid In	444,398	444,398
Retained Earnings	242,157	218,212
Accumulated Other Comprehensive Loss	(2,027)	(2,362)
Common Stockholder's Equity	695,394	671,114
Total Capitalization	1,261,566	1,237,650
Total Liabilities and Capitalization	$ 2,094,894	$ 1,994,645