Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the Board of Directors of TransCanada Corporation

We consent to the use of our reports, each dated February 14, 2018, with respect to the consolidated financial statements and the effectiveness of internal control over financial reporting included in this annual report on Form 40-F.

We also consent to the incorporation by reference of such reports in TransCanada Corporation's:

- Registration Statements No. 333-5916, No. 333-8470, No. 333-9130, No. 333-151736 and No. 333-184074 on Form S-8;

- Registration Statements No. 33-13564 and No. 333-6132 on Form F-3; and,

- Registration Statements No. 333-151781, No. 333-161929, No. 333-208585, 333-214971 and 333-218711 on Form F-10.

/s/ KPMG LLP

Chartered Professional Accountants

February 15, 2018

Calgary, Canada