---
title: "Heat-transfer additives associated with decarbonisation technologies"
ocid: "ocds-h6vhtk-0781b2"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-0781b2"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-0781b2.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-0781b2.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "Fife Council"
published: "2026-10-06"
---

# Heat-transfer additives associated with decarbonisation technologies

Buyer: Fife Council  
Current stage: Award  
OCID: ocds-h6vhtk-0781b2

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## Summary

Fife Council bought EndoTherm, a proprietary heat-transfer chemical additive (CPV 24957000), for use in closed wet heating systems across its non-domestic estate. The product is intended to improve heating performance, lower energy use and carbon emissions, and reduce long-term operating costs. Supply is for selected Council properties identified through its estate assessment programme; the purchase does not cover installation, maintenance or consultancy. Delivery is in Fife, Scotland. The requirement forms part of the Council’s energy-efficiency and decarbonisation programme.

The procurement is complete and the contract was awarded to Endo Enterprises (UK) Ltd. Fife Council used a limited negotiated procedure without publishing a contract notice, citing the supplier’s exclusive rights and the absence of technical competition: it considered the product proprietary and found no equivalent solution meeting its requirements. The evaluation and estate trials supported the claimed energy and emissions reductions. The contract value is £550,000. The contract was signed on 5 October 2026; no contract period or award date is stated.

This award indicates that Fife Council has bought a specialist additive for existing closed wet heating systems as part of its estate-wide energy-efficiency work. The Council’s rationale points to a demanding competitive position: it relied on evidence of exclusive intellectual property, a proprietary formulation and manufacturing know-how, and considered that no alternative supplier or equivalent product met its technical and operational requirements. Its own trials also supported expected reductions in energy use, emissions and operating costs. For a future comparable requirement, a supplier would need a product suitable for closed wet heating systems, convincing evidence of performance in operational buildings, and a credible route to meet the Council’s requirements across selected non-domestic properties. This was a product-supply requirement, not a route to installation, maintenance or consultancy work.

## Notice

Fife Council intends to award a contract for the supply of EndoTherm, a proprietary heat-transfer additive for use within closed wet heating systems across the Council's non-domestic estate. The product is being procured as part of an energy-efficiency programme designed to improve heating system performance, reduce energy consumption, reduce carbon emissions and deliver long-term operational cost savings.

### Lot Information

Lot 1

Fife Council intends to award a contract for the supply of EndoTherm, a proprietary heat-transfer additive for use within closed wet heating systems across the Council's non-domestic estate. The procurement forms part of the Council's energy efficiency and decarbonisation programme and will support the improvement of heating system performance within operational buildings. The contract will provide for the supply of EndoTherm to selected Council properties identified through the Council's estate assessment programme. The Council's evaluation and trial installations have identified the potential for reductions in energy consumption, carbon emissions and operational energy costs through the application of the product. The procurement is for product supply only and does not include heating installation works, maintenance services or consultancy services.

### Procurement Information

Fife Council intends to award a contract for the supply of EndoTherm, a proprietary heat-transfer additive for use within closed wet heating systems across the Council's non-domestic estate. The proposed award is based upon the Council's assessment that EndoTherm is a proprietary product manufactured exclusively by Endo Enterprises (UK) Ltd. Evidence supplied by the manufacturer confirms ownership of the relevant intellectual property rights, proprietary formulation, confidential manufacturing processes and technical know-how associated with the product. The manufacturer has confirmed that no third party is authorised to manufacture the product independently. The Council has reviewed alternative procurement routes, framework agreements and potential alternative solutions and has not identified an alternative supplier capable of providing the specified product or an equivalent solution capable of meeting the Council's technical and operational requirements. The Council has undertaken operational trials within its estate which demonstrated reductions in energy consumption and support the Council's objectives of improving heating system efficiency, reducing operational energy costs and reducing carbon emissions. On the basis of the available evidence, the Council considers that competition is absent for technical reasons and because of the protection of exclusive rights associated with the EndoTherm product. The Council therefore proposes to award the contract directly to Endo Enterprises (UK) Ltd.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/094278-2026 |
| Notice type | Award Notice |
| Procurement type | Standard |
| Procurement category | Goods |
| Procurement method | Limited |
| Procurement method details | Negotiated without publication of a contract notice |
| Tender suitability | Not specified |
| Awardee scale | SME |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 6 Oct 2026 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | Not specified |
| Contract period | Not specified |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | Not specified |
| Contracts value | £550,000 |

## Status

| Field | Value |
| --- | --- |
| Tender status | Complete |
| Lots status | Not specified |
| Awards status | Active |
| Contracts status | Active |

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | Fife Council |
| Locality | GLENROTHES |
| Postcode area | Kirkcaldy |
| Postcode | KY7 5LT |
| Country | Scotland |
| ITL 1 | TLM Scotland |
| ITL 2 | TLM0 Eastern Scotland |
| ITL 3 | TLM01 Clackmannanshire and Fife |
| Local authority | Fife |
| Electoral ward | Glenrothes Central and Thornton |
| Westminster constituency | Glenrothes and Mid Fife |
| Delivery location | TLM72 Clackmannanshire and Fife |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | Endo Enterprises (UK) Ltd |

## CPV Codes

### Divisions

- 24 - Chemical products

### Codes

- 24950000 - Specialised chemical products
- 24957000 - Chemical additives

## Release History

- 6 Oct 2026 at 13:50 - Award - Award Notice - https://www.find-tender.service.gov.uk/Notice/094278-2026

## Notice URLs

- http://www.fife.gov.uk
- https://api.publiccontractsscotland.gov.uk/v1/Notice?id=ocds-r6ebe6-0000844897
- https://www.publiccontractsscotland.gov.uk/Search/Search_Switch.aspx?ID=844897
- https://www.publiccontractsscotland.gov.uk/search/Search_AuthProfile.aspx?ID=AA00187

## 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-0781b2. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-0781b2.json.