Rockbrook A.D. Limited (Rockbrook) operates an anaerobic digestion (AD) plant at Ballyroan, Co Laois, Ireland. Rockbrook is inviting tenders for the supply, installation and commissioning of a complete system to produce renewable vehicle fuel from the biogas generated at the existing AD plant. The system shall include biogas upgrading, compression and/or other fuel conditioning equipment, together with fuel storage and dispensing facilities.