Calpine
| Company type | Private | 
|---|---|
| Industry | Energy | 
| Founded | 1984 | 
| Founder | Peter Cartwright | 
| Headquarters | , | 
| Key people | |
| Revenue | US$10.072 billion (2019) | 
| US$770 million (2019) | |
| Total assets | US$16.062 billion (2018) | 
| Number of employees | 2,256 (2019) | 
| Website | www | 
Calpine is the largest generator of electricity from natural gas and geothermal energy in the United States, with operations in competitive power markets. A Fortune 500 company based in Houston, Texas,