<SEC-DOCUMENT>0001075607-17-000023-index.html : 20170630
<SEC-HEADER>0001075607-17-000023.hdr.sgml : 20170630
<ACCEPTANCE-DATETIME>20170630141503
ACCESSION NUMBER:		0001075607-17-000023
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		8
CONFORMED PERIOD OF REPORT:	20170630
ITEM INFORMATION:		Results of Operations and Financial Condition
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20170630
DATE AS OF CHANGE:		20170630

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TC PIPELINES LP
		CENTRAL INDEX KEY:			0001075607
		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS TRANSMISSION [4922]
		IRS NUMBER:				522135448
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-35358
		FILM NUMBER:		17941568

	BUSINESS ADDRESS:	
		STREET 1:		700 LOUISIANA STREET, SUITE 700
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77002-2700
		BUSINESS PHONE:		(877) 290-2772

	MAIL ADDRESS:	
		STREET 1:		700 LOUISIANA STREET, SUITE 700
		CITY:			HOUSTON
		STATE:			TX
		ZIP:			77002-2700
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>form8k06302017.htm
<DESCRIPTION>TC PIPELINES, LP FORM 8-K JUNE 30, 2017
<TEXT>
Document 1 - file: form8k06302017.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>2
<FILENAME>exhibit23106302017.htm
<DESCRIPTION>PORTLAND NATURAL GAS TRANSMISSION SYSTEM LLC CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
<TEXT>
Document 2 - file: exhibit23106302017.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.2
<SEQUENCE>3
<FILENAME>exhibit23206302017.htm
<DESCRIPTION>IROQUOIS GAS TRANSMISSION SYSTEM, L.P. CONSENT OF INDEPENDENT PUBLIC ACCOUNTING FIRM
<TEXT>
Document 3 - file: exhibit23206302017.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>4
<FILENAME>exhibit99106302017.htm
<DESCRIPTION>IROQUOIS GAS TRANSMISSION SYSTEM, LP CONSOLIDATED FINANCIAL STATEMENTS DECEMBER 31, 2016 AND 2015
<TEXT>
Document 4 - file: exhibit99106302017.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.2
<SEQUENCE>5
<FILENAME>exhibit99206302017.htm
<DESCRIPTION>PORTLAND NATURAL GAS TRANSMISSION SYSTEM CONSOLIDATED FINANCIAL STATEMENTS DECEMBER 31, 2016
<TEXT>
Document 5 - file: exhibit99206302017.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.3
<SEQUENCE>6
<FILENAME>exhibit99306302017.htm
<DESCRIPTION>IROQUOIS GAS TRANSMISSION SYSTEM, L.P. CONSOLIDATED FINANCIAL STATEMENTS MARCH 31, 2017 AND 2016
<TEXT>
Document 6 - file: exhibit99306302017.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.4
<SEQUENCE>7
<FILENAME>exhibit99406302017.htm
<DESCRIPTION>PORTLAND NATURAL GAS TRANSMISSION SYSTEM CONSOLIDATED FINANCIAL STATEMENTS MARCH 31, 2017 AND 2016
<TEXT>
Document 7 - file: exhibit99406302017.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.5
<SEQUENCE>8
<FILENAME>exhibit99506302017.htm
<DESCRIPTION>TC PIPELINES, LP PRO FORMA FINANCIAL DATA
<TEXT>
Document 8 - file: exhibit99506302017.htm

</DOCUMENT>
</SEC-DOCUMENT>