Capitalizing on growing demand for onsite power at data centers, HD Construction Equipment has unveiled its new 77-liter DX77 diesel engine, as well as plans to establish a 1-to-3-megawatt-class lineup by 2029.
The DX77 has a maximum output of 3 megawatts, making it the largest model in the company’s engine lineup and capable of meeting the power consumption of approximately 7,000 households.
The high-speed engine rotates at 1,800 rpm, featuring fuel efficient operation and high power output. Its compact footprint is ideal for modular data centers where facilities are expanded in phases based on required power capacity, the company says.
Built with high-strength, wear-resistant materials and a high-efficiency cooling system, the DX77 is able to maintain stable performance during prolonged high-speed operation.
Maintenance has been simplified with an extended filter replacement interval of up to 1,000 hours.
Following the completion of a performance and durability verification phase, mass production is scheduled to begin in 2028. Upon the product’s official launch, HD Construction Equipment says it will offer “the industry's longest service warranty.”
While the diesel version will be available first, the DX77 is being designed to adapt to alternative fuels in the future, like gas and hydrogen.
Powered by[Related: Caterpillar, Cummins, Rehlko Powering the AI Data Center Boom]
Expanded 1-3MW Engine Lineup
HD Construction Equipment is also accelerating the expansion of its 1- to 3-megawatt engine lineup.
The company currently produces the 1-megawatt-class DX22 engine at its Incheon, South Korea plant. At the new Gunsan, South Korea plant—set for completion at the end of this month—HD Construction Equipment plans to sequentially mass-produce generator engines, beginning with the 1.5-megawatt-class DX37 in early 2027 and the 2-megawatt-class DX50 (2MW-class) by 2029 to round out its lineup.
HD Construction Equipment recently signed a contract with ERock, a U.S. power generation infrastructure solutions provider, to supply gas-fired power generation engine long blocks worth approximately $291 million over two years, starting in 2027. The ordered products are high-efficiency gas engine long blocks in the 22-liter class, designed to provide stable power to hyperscale data centers operated by major US tech giants.
