CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Operating Revenues	$ 1,853,856	$ 1,762,811	$ 4,141,818	$ 3,867,946
Operating Expenses:
Purchased Power, Fuel and Transmission	653,915	549,704	1,600,662	1,303,353
Operations and Maintenance	293,858	310,193	626,406	648,500
Depreciation	199,140	189,881	403,406	376,686
Amortization of Regulatory Assets/(Liabilities), Net	36,203	(7,807)	81,397	16,210
Energy Efficiency Programs	101,955	116,398	236,196	262,556
Taxes Other Than Income Taxes	177,431	156,234	359,865	311,455
Total Operating Expenses	1,462,502	1,314,603	3,307,932	2,918,760
Operating Income	391,354	448,208	833,886	949,186
Interest Expense	126,404	107,329	247,533	210,758
Other Income, Net	50,149	29,022	83,938	50,641
Income Before Income Tax Expense	315,099	369,901	670,291	789,069
Income Tax Expense	70,452	137,272	154,219	295,103
Net Income	244,647	232,629	516,072	493,966
Net Income Attributable to Noncontrolling Interests	1,880	1,880	3,759	3,759
Net Income Attributable to Common Shareholders	$ 242,767	$ 230,749	$ 512,313	$ 490,207
Basic and Diluted Earnings Per Common Share (in dollars per share)	$ 0.76	$ 0.72	$ 1.61	$ 1.54
Dividends Declared Per Common Share (in dollars per share)	$ 0.51	$ 0.48	$ 1.01	$ 0.95
Weighted Average Common Shares Outstanding:
Basic (in shares)	317,344,596	317,391,365	317,370,825	317,427,258
Diluted (in shares)	317,885,187	317,947,194	317,939,094	318,035,864
The Connecticut Light and Power Company
Operating Revenues	$ 694,892	$ 666,558	$ 1,479,875	$ 1,398,867
Operating Expenses:
Purchased Power, Fuel and Transmission	234,335	207,211	536,223	452,149
Operations and Maintenance	109,685	108,918	226,977	237,655
Depreciation	69,383	60,797	136,881	120,549
Amortization of Regulatory Assets, Net	15,400	11,422	43,405	24,225
Energy Efficiency Programs	18,606	32,153	41,366	68,744
Taxes Other Than Income Taxes	84,375	70,437	174,676	144,414
Total Operating Expenses	531,784	490,938	1,159,528	1,047,736
Operating Income	163,108	175,620	320,347	351,131
Interest Expense	38,674	35,299	75,498	70,264
Other Income, Net	7,063	4,221	13,623	7,489
Income Before Income Tax Expense	131,497	144,542	258,472	288,356
Income Tax Expense	31,785	53,249	60,192	106,855
Net Income	99,712	91,293	198,280	181,501
NSTAR Electric Company
Operating Revenues	690,737	704,702	1,460,865	1,438,510
Operating Expenses:
Purchased Power, Fuel and Transmission	266,108	231,039	598,687	504,891
Operations and Maintenance	102,163	111,820	220,844	227,692
Depreciation	64,051	68,477	134,593	135,695
Amortization of Regulatory Assets, Net	11,954	2,623	18,318	7,112
Energy Efficiency Programs	65,184	67,955	139,978	145,932
Taxes Other Than Income Taxes	47,627	44,844	95,815	82,664
Total Operating Expenses	557,087	526,758	1,208,235	1,103,986
Operating Income	133,650	177,944	252,630	334,524
Interest Expense	27,359	29,626	53,822	57,905
Other Income, Net	14,269	7,096	26,870	15,445
Income Before Income Tax Expense	120,560	155,414	225,678	292,064
Income Tax Expense	32,639	60,431	60,607	113,700
Net Income	87,921	94,983	165,071	178,364
Public Service Company of New Hampshire
Operating Revenues	235,146	230,383	502,497	483,541
Operating Expenses:
Purchased Power, Fuel and Transmission	83,494	60,442	193,212	122,189
Operations and Maintenance	46,487	66,569	97,867	130,533
Depreciation	22,808	32,447	46,301	63,182
Amortization of Regulatory Assets/(Liabilities), Net	8,926	(18,937)	13,961	(13,492)
Energy Efficiency Programs	4,674	3,287	9,831	7,032
Taxes Other Than Income Taxes	21,879	23,118	38,680	44,001
Total Operating Expenses	188,268	166,926	399,852	353,445
Operating Income	46,878	63,457	102,645	130,096
Interest Expense	14,612	12,970	27,386	25,780
Other Income, Net	3,409	1,891	8,159	4,703
Income Before Income Tax Expense	35,675	52,378	83,418	109,019
Income Tax Expense	9,896	20,787	22,547	43,116
Net Income	$ 25,779	$ 31,591	$ 60,871	$ 65,903