Exhibit 15.1

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the registration statements (Nos. 333-237353, 333-

190180, 333-181583, 333-179472, 333-171971, 333-129271) on Form S-8 of ABB Ltd and registration

statements (Nos. 333-223907-01 and 333-223907) on Form F-3 of ABB Ltd and ABB Finance (USA) Inc. of

our reports dated February 23, 2023, with respect to the consolidated financial statements of ABB Ltd and the

effectiveness of internal control over financial reporting.

/s/ KPMG AG 

Zurich, Switzerland

February 23, 2023