HD Construction Equipment (267270.KS) is accelerating development of a 3-megawatt diesel engine for power generation to meet surging electricity demand from data centers.
The company said on the 15th that it recently held a start-up ceremony for the DX77 generator engine at its Gunsan campus. The DX77 is a diesel engine with a displacement of 77 liters and maximum output of 3 megawatts, the largest model in HD Construction Equipment's engine lineup. Its peak output can cover the average electricity consumption of about 7,000 households. Having completed the start-up ceremony, the DX77 will now undergo full performance and durability testing, with mass production scheduled to begin in 2028.
The DX77 is a high-speed engine running at 1,800 revolutions per minute, delivering best-in-class fuel efficiency and output in its category. Its high output relative to size reduces the installation footprint and suits modular data centers, which expand facilities in stages according to required generation capacity. The engine also uses high-strength, wear-resistant materials and a high-efficiency cooling system to maintain stable performance during extended high-speed operation. Maintenance has been made easier as well, with filter replacement intervals extended to 1,000 hours. The company plans to offer the industry's longest service warranty when the product launches, aiming to secure customer confidence.
Alongside the DX77, HD Construction Equipment is broadening its range of power generation engines. It currently produces the 1-megawatt DX22 engine at its Incheon plant, and at a new engine plant in Gunsan set for completion at the end of this month, it plans to roll out generation engines in sequence, starting with the DX37, rated at 1.5 megawatts, in early 2027. The company will also begin mass production of the 2-megawatt DX50 engine by 2029, completing a lineup spanning 1 to 3 megawatts.
HD Construction Equipment also plans to expand its gas engine lineup, targeting the North American market, where demand for on-site power generation is growing amid the spread of artificial intelligence data centers and delays in grid connections. The DX77 was designed with the potential to be extended to engines running on a range of fuels, including gas and hydrogen.
"The DX77 is an important product that raises the competitiveness of our generator engine business by another level," said Moon Jae-young, president of HD Construction Equipment. "Through thorough performance and durability testing, we will improve the product's completeness and secure a new growth engine in the global power generation market."