Tender: Energetik Meridian Water Heat Network Extensions (Northern & Western) – Design & Build District Heating Pipes

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Energetik is seeking a contractor to design and build northern and western extensions to the Meridian Water Heat Network (MWHN). The western extension runs from Church Street near Edmonton Green to Winchmore School and Edmonton County (Bury Campus) and the northern extension runs from Ponders End High Street near Ponders End Park to Capital College and Waverley School. The contract covers installation of approximately 2.9 km of DN200 Series 3 pipe and 0.5 km of DN150 Series 3 pipe with a minimum 800 mm cover to the crown, with the majority of pipe already purchased by the Employer from Logstor and stored in Denmark; the Contractor will call off delivery, purchase joints and associated materials from Logstor, and install predominantly in roads or cycle paths. Pre-construction work must start on or before 22 September 2026 (including GPR, design and trial holes), construction is expected to commence on or before 5 January 2027 subject to a successful planning application and agreement of S50 licences with Enfield Highways, sectional completion of at least £1.5m spend is required by 31 March 2027, and Practical Completion is required by 31 March 2028 (contract duration expected 18 months with no option to extend); liquidated damages are £20,000 per day for missed dates. The works also include extending the existing Logstor leak detection system, cleaning, hydraulic testing with treated water to the MWHN standard and commissioning to provide heat to the extended network, and close liaison with Enfield Highways is required given limited likelihood of full road closures and constraints on multiple gangs.