Exhibit 23b

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in the Registration Statements on Form S-8 (No. 333-221347) and Form S-3 (No. 333-227662-01) of Northwest Natural Gas Company of our report dated March 2, 2020 relating to the financial statements and financial statement schedule which appears in this Form 10-K.

/s/ PricewaterhouseCoopers LLP

Portland, Oregon

March 2, 2020