Exhibit 23.1
Consent of Independent Registered Public Accounting Firm
We consent to the reference to our firm under the caption “Experts” in this Registration Statement (FormS-3) and related Prospectus of Avangrid, Inc. for the registration of common stock, debt securities, warrants, purchase contracts and units and to the incorporation by reference therein of our reports dated March 10, 2017, with respect to the consolidated financial statements and schedule of Avangrid, Inc., and the effectiveness of internal control over financial reporting of Avangrid, Inc., included in its Annual Report (Form10-K) for the year ended December 31, 2016, filed with the Securities and Exchange Commission.
| /s/ Ernst & Young LLP |
| New York, New York |
| November 13, 2017 |
