DEBT AND CREDIT FACILITIES (Tables)

6 Months Ended

Jun. 30, 2020


(unaudited) (millions of dollars)	June 30, 2020	Weighted Average Interest Rate for the Six Months Ended June 30, 2020		December 31, 2019	Weighted Average Interest Rate for the Year Ended December 31, 2019
TC PipeLines, LP
Senior Credit Facility due 2021	—	—		—	—
2013 Term Loan Facility due 2022	450	2.34%		450	3.52%
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)
3.90% Unsecured Senior Notes due 2027	500	3.90%	^(a)	500	3.90%	^(a)

GTN
3.12% Series A Senior Notes due 2030	175	3.12%	^(a)	—	—
5.29% Unsecured Senior Notes due 2020	—	—	^(a)	100	5.29%	^(a)
5.69% Unsecured Senior Notes due 2035	150	5.69%	^(a)	150	5.69%	^(a)


PNGTS
Revolving Credit Facility due 2023	71	2.36%		39	3.47%

Tuscarora
Unsecured Term Loan due 2021	23	2.22%		23	3.39%

North Baja
Unsecured Term Loan due 2021	50	2.17%		50	3.34%
	2,119			2,012
Less: unamortized debt issuance costs and debt discount	7			9
Less: current portion ^(b)	350			123
	1,762			1,880

^(a) Fixed interest rate

^(b) At June 30, 2020, this amount included TC PipeLines, LP's $350 million 4.65% Unsecured Senior Notes due in June 2021. At December 31, 2019, this amount included GTN's $100 million 5.29% Unsecured Senior Notes due in June 2020 and Tuscarora's $23 million Unsecured Term Loan that was due in August 2020.

Schedule of principal repayments required on debt

The principal repayments required of the Partnership on its debt are as follows:


(unaudited)
(millions of dollars)			Principal Payments
2020			—
2021			423
2022			450
2023			71
2024			—
Thereafter			1,175
			2,119