Calpine reviews

4.0

82% would recommend to a friend

(445 total reviews)

Andrew Novotny/Thad Hill

91% approve of CEO

75% positive business outlook

Calpine has an employee rating of 4.0 out of 5 stars, based on 445 company reviews on Glassdoor which indicates that most employees have a good working experience there. The Calpine employee rating is in line with the average (within 1 standard deviation) for employers within the Energy, Mining & Utilities industry (3.7 stars).

Reviews by job title

445 reviews
4.0
Aug 21, 2025

6 weeks in

Recommend
CEO approval
Business Outlook

Pros

I am truly enjoying my new position and collogues. They are open to teach, eager to learn, and willing to adopt new processes.

Cons

The role came with limited to none documentation related to responsibilities. All training was reliant on previous BM who had transferred to another plant. Her willingness to help with the transition has been mixed; on one hand, her knowledge of the role and nuances from 21 years experience is invaluable. On the other hand, she has controlled the flow of knowledge and training and might be holding back in some areas that should be handed over.

4.0
Aug 1, 2025

30 Day Review

Recommend
CEO approval
Business Outlook

Pros

Management and coworkers are helpful, company has good structure, overall a good experience.

Cons

I've noticed that the company sometimes likes to save money on things that matter. Like maintenance that needs to be completed to prevent plant issues or buying quality tools for employees.

Viewing 22 - 24 of 445 Reviews

Glassdoor has 523 Calpine reviews submitted anonymously by Calpine employees. Read employee reviews and ratings on Glassdoor to decide if Calpine is right for you.