Karbon Homes invites tenders for the design, build, finance, operation and maintenance of the decarbonised Byker District Heat Network in Newcastle upon Tyne. The Byker estate is Grade II* listed, covers around 80 hectares and is live and occupied throughout. There are 1,985 connections, being 1,815 Karbon Homes connections and 170 freeholder and non-domestic connections presently supplied by Newcastle City Council, of which 1,978 are residential and 7 are non residential. The network is served by the Walker Road energy centre and twelve substations. A preliminary market engagement notice for this procurement, reference 2026/S 000-060054, was published on 25 June 2026. The description of the scheme in that notice has been superseded and tenderers should refer to the information contained within this tender pack. All documents relating to this tender are available to download from the Panacea e-Sourcing portal. Submission Instructions: Electronically via the e-Sourcing portal. Suppliers must submit one copy of their tender electronically, with any additional documents required or requested. Documents must be compatible with Microsoft Office or Adobe/PDF. Should you require technical support with the e-Sourcing portal please email them directly at: • Email: support@panacea-software.com • Phone: 0207 976 0116 Tenders must be submitted using the above e-Sourcing portal. Tenders submitted via postal, or email methods will not be accepted.