--- title: "Cardiff Heat Network Expansion Project" ocid: "ocds-h6vhtk-060723" canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-060723" markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-060723.md" json_url: "https://d3tenders.com/contract/ocds-h6vhtk-060723.json" source: "Find A Tender Service" current_stage: "Planning" buyer: "CARDIFF COUNCIL" published: "2026-01-16" --- # Cardiff Heat Network Expansion Project Buyer: CARDIFF COUNCIL Current stage: Planning OCID: ocds-h6vhtk-060723 [View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-060723) [Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-060723.json) ## Summary Cardiff Council, a public authority under the Welsh devolved regulations, is in the planning stage of a significant procurement process for the expansion of the Cardiff Heat Network. This project, titled "Cardiff Heat Network Expansion Project," falls under the works category and will be conducted as a tender with a framework agreement. The project involves civil engineering works, with contract values ranging from £300,000 to £10 million per package. The procurement is located in Cardiff, United Kingdom, with a framework period expected from December 2026 to November 2030, extendable to November 2034. Market engagement is currently open for capability statements and expressions of interest until 9th February 2026. The Cardiff Heat Network Expansion Project offers substantial opportunities for businesses involved in civil engineering, highway work, pipe installation, and building connections. With contract packages ranging significantly in value, the tender presents lucrative prospects for both small and medium-sized enterprises (SMEs) as well as large contractors. This initiative encourages participation from contractors capable of delivering comprehensive design, management, and installation services, and those able to adapt to the framework's call-off nature will find this a particularly fitting opportunity to enhance their portfolio and expand their operations in the low-carbon district heating sector. ## Notice UKDEA Member Cardiff Heat Network Ltd (CHN) is inviting early market interest for upcoming expansion projects to support the ongoing growth of the city's low-carbon district heating system. Future works will be delivered on a call-off basis under a framework contract with the selected contractor. The works will encompass both small and large network connections to the existing networks, with anticipated annual contract values for individual packages ranging from PS300,000 to PS10 million. The scope is expected to include full design, civils, pipe and substation installation, commissioning and where an existing building, integration into secondary-side systems. The scope of the framework will include but not be limited: 1. Highways and Civil Works: GPR surveys, utility mapping, trial holes, trenching, reinstatement, and coordination within the public highway, TTRO's, phase road closure coordination, etc. 2. Easements and Access: Support with wayleaves and optimal routing. 3. Pipe Installation and Commissioning: Pre-insulated pipework installation, welding, NDT testing, ice pigging, water filling, chemical conditioning, balancing, system commissioning and certification. 4. Building Connections: (where required - internal pipework modifications to connect to existing secondary circuits), installation and commissioning of customer substations, BMS integration and controls. 5. Design, Management & Safety: Multi-disciplinary design, project management, Principal Contractor role under CDM, community engagement and full compliance with health, safety, and environmental standards. CHN is seeking capability statements and expressions of interest from suitable contractors or consortiums ahead of launching a formal procurement process which will take place via a procurement portal selected by CHN. If any member would like to respond to this request, please submit your expression of interest and capability statement via Proactis Any questions regarding this process please submit them via the question tab on Proactis ### Planning Information We are requesting capability statements and expression of interests from suitable contractors or consortiums. ## Key Details | Field | Value | | --- | --- | | Publication source | Find A Tender Service | | Latest notice | https://www.find-tender.service.gov.uk/Notice/003683-2026 | | Notice type | UK2 - Preliminary Market Engagement Notice | | Procurement type | Framework | | Procurement category | Works | | Procurement method | Not Specified | | Procurement method details | Not specified | | Tender suitability | SME | | Awardee scale | Not specified | | All stages | Planning | ## Dates | Field | Value | | --- | --- | | Publication date | 16 Jan 2026 | | Submission deadline | Not specified | | Future notice date | 1 Oct 2026 | | Award date | Not specified | | Contract period | 1 Dec 2026 - 30 Nov 2030 | | Recurrence | Not specified | ## Values | Field | Value | | --- | --- | | Tender value | £10,000,000 | | Lots value | Not specified | | Awards value | Not specified | | Contracts value | Not specified | ## Status | Field | Value | | --- | --- | | Tender status | Planning | | Lots status | Planning | | Awards status | Not specified | | Contracts status | Not specified | ## Buyer | Field | Value | | --- | --- | | Main buyer | CARDIFF COUNCIL | | Locality | CARDIFF | | Post town | Cardiff | | Postcode | CF10 4UW | | Country | Wales | | ITL 1 | TLL Wales | | ITL 2 | TLL5 South East Wales | | ITL 3 | TLL52 Cardiff and Vale of Glamorgan | | Local authority | Cardiff | | Electoral ward | Butetown | | Westminster constituency | Cardiff South and Penarth | | Delivery location | TLL22 Cardiff and Vale of Glamorgan | ## CPV Codes ### Divisions - 45 - Construction work ### Codes - 45200000 - Works for complete or part construction and civil engineering work ## Release History - 16 Jan 2026 at 08:23 - Planning - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/003683-2026 ## Documents - https://www.find-tender.service.gov.uk/Notice/003683-2026 16th January 2026 - Preliminary market engagement notice on Find a Tender ## Notice URLs - http://www.cardiff.gov.uk - https://www.legislation.gov.uk/ukpga/2023/54/contents ## Provenance This Markdown file is an alternate public rendering of the D3 Tenders contract record. The canonical page is https://d3tenders.com/contract/?ocid=ocds-h6vhtk-060723. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-060723.json.