DEBT AND CREDIT FACILITIES (Tables)

9 Months Ended

Sep. 30, 2016

(unaudited)	September 30,	December 31,	Weighted Average Interest Rate for the Nine Months Ended
(millions of dollars)	2016	2015	September 30, 2016

TC PipeLines, LP Senior Credit Facility due 2017	220	200	1.70	%
TC PipeLines, LP 2013 Term Loan Facility due 2018	500	500	1.71	%
TC PipeLines, LP 2015 Term Loan Facility due 2018	170	170	1.60	%
TC PipeLines, LP 4.65% Unsecured Senior Notes due 2021	350	350	4.65	%(b)
TC PipeLines, LP 4.375% Unsecured Senior Notes due 2025	350	350	4.375	%(b)
GTN 5.29% Unsecured Senior Notes due 2020	100	100	5.29	%(b)
GTN 5.69% Unsecured Senior Notes due 2035	150	150	5.69	%(b)
GTN Unsecured Term Loan Facility due 2019	65	75	1.40	%
Tuscarora Unsecured Term Loan due 2019	10	—	1.58	%
Tuscarora 3.82% Series D Senior Notes due 2017	16	16	3.82	%(b)

	1,931	1,911
Less: unamortized debt issuance costs and debt discount (a)	8	8
Less: current portion	27	14

	1,896	1,889

^(a)

As a result of the application of ASU No. 2015-03 and similar to the presentation of debt discounts, debt issuance costs of $7 million at December 31, 2015 previously reported as other assets in the balance sheet were reclassified as an offset against debt. Refer to Note 3, Accounting Pronouncements.

^(b)

Fixed interest rate.

Schedule of principal repayments required on debt

(unaudited)
(millions of dollars)

2016		4
2017		243
2018		691
2019		43
2020		100
Thereafter		850

		1,931