Pg&E Corp — 8-K exhibit

Exhibit 5.1

FILE NO. 026915.81

February 19, 2026

PG&E Corporation

300 Lakeside Drive

Oakland, California 94612

Registration Statement on Form S-3

To the Addressee:

We have served as counsel to PG&E Corporation, a California corporation (the “Company”), in connection with the issuance and sale by the Company of $1,000,000,000 aggregate principal amount of the Company’s 6.850% Fixed-to-Fixed Reset Rate Junior Subordinated Notes due 2056 (the “Junior Subordinated Notes”) covered by the Company’s Registration Statement (the “Registration Statement”) on Form S-3 (File No. 333-277286), including the prospectus constituting a part thereof, dated February 22, 2024, and the final prospectus supplement, dated February 17, 2026 (collectively, the “Prospectus”), filed by the Company with the Securities and Exchange Commission (the “SEC”) under the Securities Act of 1933, as amended (the “Securities Act”).

The Junior Subordinated Notes were issued under the Company’s Subordinated Note Indenture, dated as of September 11, 2024 (the “Original Indenture”), as previously amended and supplemented and as further amended and supplemented by the Second Supplemental Indenture, dated as of February 19, 2026 (the “Second Supplemental Indenture”, together with the Original Indenture, the “Indenture”) between the Company and The Bank of New York Mellon Trust Company, N.A., as trustee (the “Trustee”). The forms, terms and other provisions of the Junior Subordinated Notes are established under the Second Supplemental Indenture. The Junior Subordinated Notes were sold by the Company pursuant to the Underwriting Agreement, dated February 17, 2026 (the “Underwriting Agreement”), among the Company, Barclays Capital Inc., BofA Securities, Inc., J.P. Morgan Securities LLC and Mizuho Securities USA LLC, as representatives of the several underwriters named therein.

In rendering the opinion expressed below, we have examined and relied upon copies of the Registration Statement and the exhibits filed therewith and the Indenture. We have also examined originals, or copies of originals certified to our satisfaction, of such agreements, documents, certificates and statements of government officials and other instruments, and have examined such questions of law and have satisfied ourselves as to such matters of fact, as we have considered relevant and necessary as a basis for this opinion letter. We have assumed: (i) the genuineness of all signatures; (ii) the legal capacity of natural persons; (iii) the authenticity of all documents submitted to us as originals and (iv) the conformity to original documents of all documents submitted to us as certified or photostatic copies and the authenticity of the originals of such latter documents. We have also assumed that the Indenture will be the valid and legally binding obligation of the Trustee.

ATLANTA AUSTIN BANGKOK BOSTON BRUSSELS CHARLOTTE DALLAS DUBAI HOUSTON

LONDON LOS ANGELES MIAMI NEW YORK RICHMOND SAN FRANCISCO TOKYO TYSONS WASHINGTON, DC

www.Hunton.com

PG&E Corporation

February 19, 2026

Page 2

Based on the foregoing, and subject to the qualifications and limitations set forth herein, we are of the opinion that the Junior Subordinated Notes, when duly authenticated by the Trustee and issued and delivered by the Company against payment therefor in accordance with the terms of the Underwriting Agreement and the Indenture, will constitute the valid and binding obligations of the Company (subject to bankruptcy, insolvency, liquidation, receivership, reorganization, moratorium, fraudulent conveyance, transfer or other laws of general applicability relating to or affecting the enforcement of mortgagees’ and other creditors’ rights and by the effect of general principles of equity, regardless of whether considered in a proceeding at law or in equity).

We do not express any opinion herein concerning any law other than the laws of the State of New York and the General Corporation Law of the State of California.

We hereby consent to the filing of this opinion letter as an exhibit to the Registration Statement and to all references to us included in or made a part of the Registration Statement. In giving the foregoing consent, we do not hereby admit that we come within the category of persons whose consent is required under Section 7 of the Securities Act or the rules and regulations of the SEC thereunder. This opinion letter is limited to the matters stated in this opinion letter, and no opinion may be implied or inferred beyond the matters expressly stated in this opinion letter. This opinion letter is given as of the date hereof, and we assume no obligation to advise you after the date hereof of facts or circumstances that come to our attention or changes in the law, including judicial or administrative interpretations thereof, that occur which could affect the opinions contained herein.