Calpine Reviews

4.2

86% would recommend to a friend

(442 total reviews)

Andrew Novotny/Thad Hill

91% approve of CEO

78% positive business outlook

Calpine has an employee rating of 4.2 out of 5 stars, based on 442 company reviews on Glassdoor which indicates that most employees have an excellent 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

442 reviews
5.0
19 Feb 2026

Rotational

Anonymous employee
Recommend
CEO approval
Business outlook

Pros

Good comp, exposure to high responsbility early on

Cons

Longer hours are expected on trade floor.

5.0
4 Feb 2026

Great Company

Anonymous employee
Recommend
CEO approval
Business outlook

Pros

Everyone treats each other like family and they take safety very serious. There are a lot of opportunities around the nation that satisfy many fields of work.

Cons

It can be difficult to get your foot in the door with this company, but it is very rewarding if you can land an opportunity.

Viewing 1 - 3 of 442 Reviews

Glassdoor has 520 Calpine reviews submitted anonymously by Calpine employees. Read employee reviews and ratings on Glassdoor to decide if Calpine is right for you.