Exhibit 23

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement No. 333-202366 on Form S-8 of our report dated June 25, 2015, relating to the financial statements and financial statement schedules of the Dominion Hourly Savings Plan, appearing in this Annual Report on Form 11-K of the Dominion Hourly Savings Plan for the year ended December 31, 2014.

/s/ Deloitte & Touche LLP

Richmond, Virginia

June 25, 2015