DL Energy established ECO ONE ENERGY on March 16, 2021, in order to develop a hydrogen fuel cell power plant in Yeosu National Industrial Complex with total project cost of 100 billion won. The maximum power output is 18.5MW per hour, and ECO ONE ENERGY delivers 150,000MW annually, which can be consumed by 50,000 households. The hydrogen fuel, which is produced from the naphtha cracking process, is supplied by Yeocheon NCC (Naphtha Cracking Center).

The construction was commenced in July 2022, and the commissioning was successfully accomplished on November 10, 2023. The commercial operation date was certified by KPX(korea Power Exchange) as November 11, 2023.

ECO ONE ENERGY fuel cells use by-product hydrogen from the naphtha cracking process and only heat and water is displaced after power generation. From the perspective of ESG management, ECO ONE ENERGY is the optimal eco-friendly solution for power generation since there is no environmental pollutants emitted such as carbon dioxide, sulfur oxide, or nitrogen oxide, etc.