# John Cockerill supplies world's largest HRSG for Flémalle power plant

John Cockerill has supplied the world's largest heat recovery steam generator (HRSG) for the new 875 MW combined cycle power plant at Flémalle, Belgium. The HRSG is installed downstream of a Siemens Energy SGT5-9000HL gas turbine and achieves over 63% plant efficiency.

- Type: Contract
- Announced: 2025-08-27
- Where: Flémalle, Belgium
- Status: completed
- Capacity: 875 MW (power plant)
- Products: heat recovery steam generator, gas turbine, steam turbine
- Sectors: [Power Generation Equipment](https://endata.com/sectors/power-generation-equipment.md)

## Companies

- [John Cockerill](https://endata.com/companies/43356.md)
- [Siemens Energy](https://endata.com/companies/6803.md) (supplier)

## Sources

- [gasturbineworld.com](https://gasturbineworld.com/worlds-largest-hrsg/), 2025-08-27: "The heat recovery steam generator is the biggest ever supplied by John Cockerill and the world's largest HRSG, and will produce a third of the power plant energy."

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.