Bloom Energy designs, manufactures, sells, and installs solid-oxide fuel cell systems ("Energy Servers") for on-site power generation. Bloom Energy Servers are fuel-flexible and can use natural gas, biogas, and hydrogen to create 24/7 electricity for stationary applications. In 2021, the company announced plans to leverage its technology and enter the electrolyzer market. Bloom primarily sells its systems in the United States and South Korea.