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Castlelost FlexGen

Castlelost FlexGen facility comprises of a 275MW reserve gas-fired generator, and Gas Insulated Swtichgear to support and back up the electrical grid.

Castlelost FlexGen under construction

Casltleost FlexGen was developed to support the Irish grid with 275 MW of flexible generation capacity during periods of peak demand. This project is designed to operate intermittently and provide generating capacity during periods of high demand or when renewable energy cannot meet demand.


Construction Phase

  • Project Sponsors: Lumcloon Energy and VPI
  • Project Capacity: 275MW
  • Equipment Supply: Siemens Energy Ltd.
  • Design and Build Contractor: Suir Engineering Ltd.
  • Owners Engineer: Mott MacDonald
  • Construction Commencement: 2023
  • Construction Completion: 2025

  • Project Sponsors: Lumcloon Energy and VPI
  • O&M Contractor: VPI
  • OEM Service Agreement: Siemens Energy
  • Trading: Vitol

Site Location

The Castlelost FlexGen facility is located on a 52-acre greenfield site 2km southwest of Rochfortbridge, Co. Westmeath.