Exhibit

We hereby consent to the incorporation by reference in the Registration Statement on Form S-8 (Nos. 333-217830, 333-149074, 333-153860, 333-167028 and 333-188863) of Calpine Corporation of our report dated February 16, 2018 relating to the financial statements, financial statement schedule and the effectiveness of internal control over financial reporting, which appears in this Form 10-K.