Exhibit 99.1

The expenses to be incurred by Consumers Energy Company relating to the offering of $850,000,000 principal amount of its 5.125% First Mortgage Bonds due 2036, under Consumers Energy Company’s Registration Statement on Form S-3 (Registration No. 333-293382-01) and a related prospectus supplement filed with the Securities and Exchange Commission and dated April 30, 2026 are estimated to be as follows:

Estimated Fees