Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the reference to our firm under the caption “Experts” in Amendment No, 1 to the Registration Statement (Form S-1 No. 333-206479) and related Prospectus of Graybar Electric Company, Inc. for the registration of 1,237,000 shares of its common stock and to the incorporation by reference therein of our report dated March 12, 2015, with respect to the consolidated financial statements of Graybar Electric Company, Inc. included in its Annual Report (Form 10-K) for the year ended December 31, 2014, filed with the Securities and Exchange Commission.

/s/ Ernst and Young LLP

St. Louis, Missouri
November 5, 2015