Houston-based Calpine is a major U.S. power company that is safely and responsibly meeting the needs of an economy that demands cleaner, more fuel-efficient and dependable sources of electricity. Calpine stock trades on the New York Stock Exchange under the symbol CPN.Modern and EfficientCalpine's fleet of natural gas-fired plants is among the youngest and cleanest in the country. The average plant age is about 15 years old, and the fleet emits fewer greenhouse gases per megawatt hour generated than any other independent power producer in the United States.Calpine's fleet of combined-cycle and cogeneration plants is the nations's largest. Highly efficient combined-cycle plants use both natural gas and steam to produce electricity. Cogeneration plants also produce steam for industrial use.A Top Operating PriorityCalpine employees embrace a Safety First culture as evidenced by a low total reportable incident rate.A safety committee of key top executives and plant personnel from various operating regions leads the charge to continued safety improvement and awareness.Scale in 3 Major MarketsCalpine's portfolio has significant scale in three major power markets: Texas, California and the Mid-Atlantic more... See more text