Calpine Corporation (NYSE:CPN)
About Calpine Corporation (NYSE:CPN) Calpine Corporation (Calpine) is a wholesale power company in the United States. Calpine owns and operates natural gas-fired and geothermal power plants in North America and has a presence in power markets in the United States, including California and Texas, and in the Pennsylvania-New JerseyMaryland Interconnection (PJM), Independent System Operator (ISO) New England (NE) and New York ISO(NYISO)markets.