DEBT AND CREDIT FACILITIES (Tables)

3 Months Ended

Mar. 31, 2017

DEBT AND CREDIT FACILITIES

Schedule of debt and credit facilities

(unaudited) (millions of dollars)	March 31, 2017	Weighted Average Interest Rate for the Quarter Ended March 31, 2017		December 31, 2016	Weighted Average Interest Rate for the Year Ended December 31, 2016
TC PipeLines, LP
Senior Credit Facility due 2021	110	2.03	%	160	1.72	%
2013 Term Loan Facility due July 2018	500	2.03	%	500	1.73	%
2015 Term Loan Facility due September 2018	170	1.93	%	170	1.63	%
4.65% Unsecured Senior Notes due 2021	350	4.65	%(a)	350	4.65	%(a)
4.375% Unsecured Senior Notes due 2025	350	4.375	%(a)	350	4.375	%(a)
GTN
5.29% Unsecured Senior Notes due 2020	100	5.29	%(a)	100	5.29	%(a)
5.69% Unsecured Senior Notes due 2035	150	5.69	%(a)	150	5.69	%(a)
Unsecured Term Loan Facility due 2019	65	1.73	%	65	1.43	%
Tuscarora
Unsecured Term Loan due 2019	10	1.91	%	10	1.64	%
3.82% Series D Senior Notes due 2017	12	3.82	%(a)	12	3.82	%(a)
	1,817			1,867
Less: unamortized debt issuance costs and debt discount	8			9
Less: current portion	23			23
	1,786			1,835

(a) Fixed interest rate

Schedule of principal repayments required on debt

(unaudited)
(millions of dollars)
2017	23
2018	691
2019	43
2020	100
2021	460
Thereafter	500
	1,817