<SEC-DOCUMENT>0000099070-15-000003-index.html : 20150501
<SEC-HEADER>0000099070-15-000003.hdr.sgml : 20150501
<ACCEPTANCE-DATETIME>20150501170354
ACCESSION NUMBER:		0000099070-15-000003
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		8
CONFORMED PERIOD OF REPORT:	20150331
FILED AS OF DATE:		20150501
DATE AS OF CHANGE:		20150501

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TRANSCANADA PIPELINES LTD
		CENTRAL INDEX KEY:			0000099070
		STANDARD INDUSTRIAL CLASSIFICATION:	NATURAL GAS TRANSMISSION [4922]
		IRS NUMBER:				522179728
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		6-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-08887
		FILM NUMBER:		15825321

	BUSINESS ADDRESS:	
		STREET 1:		450 -1ST STREET SW
		STREET 2:		P O BOX 1000 STATION M
		CITY:			CALGARY ALBERTA
		STATE:			A0
		ZIP:			T2P 5H1
		BUSINESS PHONE:		4039206411

	MAIL ADDRESS:	
		STREET 1:		450 I STREET SW
		CITY:			CALGARY ALBERTA
		STATE:			A0
		ZIP:			T2P 5H1
</SEC-HEADER>
<DOCUMENT>
<TYPE>6-K
<SEQUENCE>1
<FILENAME>tcpl-03312015x6xk.htm
<DESCRIPTION>FORM 6-K
<TEXT>
Document 1 - file: tcpl-03312015x6xk.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-13.1
<SEQUENCE>2
<FILENAME>tcpl-03312015xmda.htm
<DESCRIPTION>MANAGEMENT'S DISCUSSION AND ANALYSIS
<TEXT>
Document 2 - file: tcpl-03312015xmda.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-13.2
<SEQUENCE>3
<FILENAME>tcpl-03312015xfinstmts.htm
<DESCRIPTION>FIRST QUARTER FINANCIAL STATEMENTS
<TEXT>
Document 3 - file: tcpl-03312015xfinstmts.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.1
<SEQUENCE>4
<FILENAME>tcpl-03312015xexx311.htm
<DESCRIPTION>CEO CERTIFICATE PURSUANT TO SECTION 302
<TEXT>
Document 4 - file: tcpl-03312015xexx311.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-31.2
<SEQUENCE>5
<FILENAME>tcpl-03312015xexx312.htm
<DESCRIPTION>CFO CERTIFICATE PURSUANT TO SECTION 302
<TEXT>
Document 5 - file: tcpl-03312015xexx312.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-32.1
<SEQUENCE>6
<FILENAME>tcpl-03312015xex321.htm
<DESCRIPTION>CEO CERTIFICATE PURSUANT TO SECTION 906
<TEXT>
Document 6 - file: tcpl-03312015xex321.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-32.2
<SEQUENCE>7
<FILENAME>tcpl-03312015xexx322.htm
<DESCRIPTION>CFO CERTIFICATE PURSUANT TO SECTION 906
<TEXT>
Document 7 - file: tcpl-03312015xexx322.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>8
<FILENAME>tcpl-03312015xexx991.htm
<DESCRIPTION>EARNINGS COVERAGE RATIOS
<TEXT>
Document 8 - file: tcpl-03312015xexx991.htm

</DOCUMENT>
</SEC-DOCUMENT>