Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the registration statements (No. 333-279148) on Form S-3 and (No. 333-239878) on Form S-8 of our reports dated February 7, 2025, with respect to the consolidated financial statements of Green Plains Inc. and the effectiveness of internal control over financial reporting.

/s/ KPMG LLP

Omaha, Nebraska

February 7, 2025