BHI designs, manufactures and installs power generation equipment for power plants and steel processes, with its core product being the heat recovery steam generator (HRSG), a main component of gas combined-cycle plants.
An HRSG uses high-temperature exhaust gas from a gas turbine to produce steam for secondary generation, and the company holds the underlying technology for it. It began the business under a license from Amec in 2005 and acquired the original technology itself in 2020.
Beyond HRSG, the portfolio spans coal and steel-process boilers, nuclear balance-of-plant (B.O.P) equipment, and other components and EPC work.
Samsung Securities, in an October 2025 report, put the cumulative revenue mix for the first three quarters of 2025 at 57% HRSG, 27% other equipment and EPC, 15% boilers and about 1% B.O.P.
According to IBK Investment Securities, Q1 2026 divisional revenue was KRW 190.7bn for HRSG (up 93.3% year on year), KRW 63.2bn for boilers (up 214.2%) and KRW 10.3bn for nuclear B.O.P (up 144.2%), with the boiler jump driven by revenue recognition on a KRW 517.7bn coal boiler contract signed with a Philippine utility in April 2025.
Its customers span global EPC contractors, power developers and gas turbine makers. The company says its collaboration record with major turbine makers including GE Vernova, Mitsubishi Heavy Industries and Siemens Energy allows it to serve all gas turbine types.
In the McCoy Report's 2025 HRSG market analysis it ranked first globally in both the technology and fabrication categories, and the company said this was its fourth time at number one, alongside 2014, 2021 and 2024.
In nuclear B.O.P it is supplying Korea's Shin-Hanul units 3 and 4 while leveraging past references abroad, and domestically it competes with players such as Doosan Enerbility and SNT Energy.