Exhibit 23.7

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on Form S-3 of our report dated February 19, 2016 relating to the Delmarva Power & Light Company financial statements and financial statement schedule, which appears in Pepco Holdings Inc.’s Annual Report on Form 10-K for the year ended December 31, 2015. We also consent to the reference to us under the heading “Experts” in such Registration Statement.

/s/ PricewaterhouseCoopers LLP

Washington, DC

August 30, 2016