In July 2014, Doosan decided to pursue a merger with FuelCell Power, as the country's residential fuel cell company.

FuelCell Power is a residential and small building fuel cell manufacturer founded in 2001 and was listed on the KONEX market of the Korea Exchange in 2013.

And the company acquired the assets and operating liabilities of Clearedge power to launch Doosan Fuel Cell America.

"[2] In January 2018, Doosan Fuel Cell, Hanhwa Energy, and Korea East-West Power established a special purpose corporation, Daesan Green Energy, and built the world’s first by-product hydrogen power plant, the Daesan Hydrogen Fuel Cell Power Plant, in Seosan, South Chungcheong Province.

In 2024, a plant capable of producing 50 MW SOFCs was completed in the Saemangeum Industrial Complex in Gunsan, North Jeolla Province.