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Based in Boulder, CO, ION Clean Energy has received approximately $85 million in highly competitive U.S. Department of Energy (DOE) awards to support bench-scale and large-pilot testing, including the construction of a new pilot at Calpine Corporation’s Los Medanos Energy Center in Pittsburg, California. Most recently, ION has been the technology of choice for DOE-funded commercial Front-End Engineering Design (FEED) studies for CO2 capture systems at Tampa Electric Company’s Polk Power Station and Calpine's Delta Energy Center. ION has also been competitively selected for commercial projects around the world that will drive its growth. ION tested and proved its performance at the National Carbon Capture Center in Alabama and the CO2 Technology Centre Mongstad in Norway, the world’s largest and most advanced CO2 capture test facility. ION’s pilot-scale demonstration plant with its key commercial partner, Calpine, will be operational in 2023, and the company will continue to pursue DOE funding and commercial opportunities.

ION Clean Energy Questions

The ION Clean Energy annual revenue was $9 million in 2026.

Buz Brown is the Founder and Executive Chairman of ION Clean Energy.

42 people are employed at ION Clean Energy.

ION Clean Energy is based in Boulder, Colorado.

The NAICS codes for ION Clean Energy are [54133, 54, 5413, 541].

The SIC codes for ION Clean Energy are [87, 871].

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