RELATED PARTY TRANSACTIONS (Tables)

9 Months Ended

Sep. 30, 2020

Capital and operating costs charged to our pipeline systems, except for Iroquois, for the three and nine months ended September 30, 2020 and 2019 by TC Energy’s subsidiaries and amounts payable to TC Energy’s subsidiaries at September 30, 2020 and December 31, 2019 are summarized in the following tables:


	Three months ended		Nine months ended
(unaudited)	September 30,		September 30,
(millions of dollars)	2020	2019	2020	2019
Capital and operating costs charged by TC Energy’s subsidiaries to:
Great Lakes (a)	35	12	57	35
Northern Border (a)	9	10	29	29
GTN	33	11	57	32
Bison	—	1	1	2
North Baja	4	1	6	4
Tuscarora	3	1	5	3
PNGTS (a)	1	2	4	5
Impact on the Partnership’s income (b):
Great Lakes	4	4	13	14
Northern Border	4	4	12	13
GTN	7	9	22	25
Bison	—	—	1	1
North Baja	1	1	3	3
Tuscarora	—	1	2	3
PNGTS	—	1	2	3


(unaudited)
(millions of dollars)	September 30, 2020	December 31, 2019
Net amounts payable to TC Energy’s subsidiaries are as follows:
Great Lakes (a)	4	5
Northern Border (a)	3	4
GTN (c)	30	5
Bison	—	—
North Baja	—	1
Tuscarora	—	—
PNGTS (a)	1	1

(a)Represents 100 percent of the costs.

(b)Represents the Partnership's proportionate share-based ownership percentage of these pipelines.

(c)Includes obligations related to commercial system purchase described below. The purchase price was paid in October 2020.