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.

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.