CONDENSED CONSOLIDATED STATEMENT OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Operating Activities:
Net Income	$ 271,426	$ 261,338
Adjustments to Reconcile Net Income to Net Cash Flows Provided by Operating Activities:
Depreciation	204,266	186,805
Deferred Income Taxes	88,481	141,398
Pension, SERP and PBOP (Income)/Expense, Net	(1,965)	5,828
Pension and PBOP Contributions	(171,244)	(45,700)
Regulatory Overrecoveries, Net	70,457	56,734
Amortization of Regulatory Assets, Net	45,194	24,017
Other	(54,969)	(36,176)
Changes in Current Assets and Liabilities:
Receivables and Unbilled Revenues, Net	(156,888)	(50,251)
Fuel, Materials, Supplies and Inventory	(26,956)	(33,058)
Taxes Receivable/Accrued, Net	(5,061)	32,313
Accounts Payable	(61,571)	(57,701)
Other Current Assets and Liabilities, Net	(23,456)	(40,198)
Net Cash Flows Provided by Operating Activities	177,714	445,349
Investing Activities:
Investments in Property, Plant and Equipment	(607,334)	(523,560)
Proceeds from Sales of Marketable Securities	145,438	154,772
Purchases of Marketable Securities	(143,264)	(149,688)
Proceeds from the Sale of Property, Plant and Equipment	130,641	0
Other Investing Activities	(5,200)	(16,105)
Net Cash Flows Used in Investing Activities	(479,719)	(534,581)
Financing Activities:
Cash Dividends on Common Shares	(160,027)	(150,521)
Cash Dividends on Preferred Stock	(1,880)	(1,880)
Decrease in Notes Payable	(240,005)	(173,000)
Issuance of Long-Term Debt	1,150,000	600,000
Retirements of Long-Term Debt	(150,218)	(150,000)
Other Financing Activities	(19,140)	(15,832)
Net Cash Flows Provided by Financing Activities	578,730	108,767
Net Increase in Cash, Cash Equivalents and Restricted Cash	276,725	19,535
Cash, Cash Equivalents and Restricted Cash - Beginning of Period	85,890	106,750
Cash, Cash Equivalents and Restricted Cash - End of Period	362,615	126,285
The Connecticut Light And Power Company
Operating Activities:
Net Income	98,568	90,208
Adjustments to Reconcile Net Income to Net Cash Flows Provided by Operating Activities:
Depreciation	67,498	59,751
Deferred Income Taxes	29,109	47,864
Pension, SERP and PBOP (Income)/Expense, Net	(82,276)	(625)
Regulatory Overrecoveries, Net	(8,878)	(18,734)
Amortization of Regulatory Assets, Net	28,006	12,803
Other	(11,870)	(1,710)
Changes in Current Assets and Liabilities:
Receivables and Unbilled Revenues, Net	(46,330)	(1,280)
Taxes Receivable/Accrued, Net	42,460	32,920
Accounts Payable	(28,408)	(16,957)
Other Current Assets and Liabilities, Net	(23,160)	(30,823)
Net Cash Flows Provided by Operating Activities	64,719	173,417
Investing Activities:
Investments in Property, Plant and Equipment	(202,126)	(181,601)
Other Investing Activities	56	32
Net Cash Flows Used in Investing Activities	(202,070)	(181,569)
Financing Activities:
Cash Dividends on Common Shares	(60,000)	(49,600)
Capital Contributions from Eversource Parent	9,000	0
Cash Dividends on Preferred Stock	(1,390)	(1,390)
Increase/(Decrease) in Notes Payable to Eversource Parent	(69,500)	(76,700)
Issuance of Long-Term Debt	500,000	300,000
Retirements of Long-Term Debt	0	(150,000)
Other Financing Activities	(6,539)	(3,631)
Net Cash Flows Provided by Financing Activities	371,571	18,679
Net Increase in Cash, Cash Equivalents and Restricted Cash	234,220	10,527
Cash, Cash Equivalents and Restricted Cash - Beginning of Period	9,619	8,403
Cash, Cash Equivalents and Restricted Cash - End of Period	243,839	18,930
NSTAR Electric Company
Operating Activities:
Net Income	77,149	83,381
Adjustments to Reconcile Net Income to Net Cash Flows Provided by Operating Activities:
Depreciation	70,542	67,218
Deferred Income Taxes	22,542	45,375
Pension, SERP and PBOP Benefits, Net	(9,295)	(10,548)
Regulatory Overrecoveries, Net	17,618	3,921
Amortization of Regulatory Assets, Net	6,364	4,489
Other	(2,204)	(3,877)
Changes in Current Assets and Liabilities:
Receivables and Unbilled Revenues, Net	(52,949)	(9,275)
Fuel, Materials, Supplies and Inventory	(37,427)	(33,342)
Taxes Receivable/Accrued, Net	(22,698)	37,566
Accounts Payable	43,170	(29,015)
Other Current Assets and Liabilities, Net	23,703	1,251
Net Cash Flows Provided by Operating Activities	136,515	157,144
Investing Activities:
Investments in Property, Plant and Equipment	(192,036)	(164,849)
Other Investing Activities	(654)	(3,608)
Net Cash Flows Used in Investing Activities	(192,690)	(168,457)
Financing Activities:
Cash Dividends on Common Shares	(161,000)	(56,000)
Capital Contributions from Eversource Parent	92,500	0
Cash Dividends on Preferred Stock	(490)	(490)
Decrease in Notes Payable	133,000	68,400
Other Financing Activities	(78)	(38)
Net Cash Flows Provided by Financing Activities	63,932	11,872
Net Increase in Cash, Cash Equivalents and Restricted Cash	7,757	559
Cash, Cash Equivalents and Restricted Cash - Beginning of Period	14,708	15,506
Cash, Cash Equivalents and Restricted Cash - End of Period	22,465	16,065
Public Service Company Of New Hampshire
Operating Activities:
Net Income	35,093	34,312
Adjustments to Reconcile Net Income to Net Cash Flows Provided by Operating Activities:
Depreciation	23,493	30,735
Deferred Income Taxes	43,021	11,290
Regulatory Overrecoveries, Net	129	3,507
Amortization of Regulatory Assets, Net	5,035	5,445
Other	(15,212)	(4,405)
Changes in Current Assets and Liabilities:
Receivables and Unbilled Revenues, Net	(80)	1,149
Fuel, Materials, Supplies and Inventory	4,854	(3,371)
Taxes Receivable/Accrued, Net	(5,867)	1,778
Accounts Payable	(18,760)	5,475
Other Current Assets and Liabilities, Net	24,543	27,332
Net Cash Flows Provided by Operating Activities	96,249	113,247
Investing Activities:
Investments in Property, Plant and Equipment	(72,287)	(75,327)
Proceeds from the Sale of Property, Plant and Equipment	130,641	0
Other Investing Activities	97	(145)
Net Cash Flows Used in Investing Activities	58,451	(75,472)
Financing Activities:
Cash Dividends on Common Shares	(150,000)	(18,500)
Increase/(Decrease) in Notes Payable to Eversource Parent	8,400	(16,000)
Other Financing Activities	(38)	(112)
Net Cash Flows Provided by Financing Activities	(141,638)	(34,612)
Net Increase in Cash, Cash Equivalents and Restricted Cash	13,062	3,163
Cash, Cash Equivalents and Restricted Cash - Beginning of Period	2,191	5,953
Cash, Cash Equivalents and Restricted Cash - End of Period	$ 15,253	$ 9,116