---
title: "Heat-transfer additives associated with decarbonisation technologies"
ocid: "ocds-r6ebe6-0000844897"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-r6ebe6-0000844897"
markdown_url: "https://d3tenders.com/contract/ocds-r6ebe6-0000844897.md"
json_url: "https://d3tenders.com/contract/ocds-r6ebe6-0000844897.json"
source: "Public Contracts Scotland"
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-r6ebe6-0000844897

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-r6ebe6-0000844897)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-r6ebe6-0000844897.json)

## Summary

Fife Council procured EndoTherm, a proprietary heat-transfer additive for closed wet heating systems (CPV 24957000). The product is intended for selected properties across the Council’s non-domestic estate, identified through its estate assessment programme. It supports an energy-efficiency and decarbonisation programme by improving heating-system performance, reducing energy use and carbon emissions, and lowering long-term operating costs. The purchase is for product supply only: it does not include heating installation, maintenance or consultancy. The delivery area is Fife, including Council operational buildings; Fife Council is the buying organisation.

The procurement is complete and the contract was awarded to Endo Enterprises (UK) Ltd through a limited direct award without prior publication of a competition. Fife Council’s stated rationale was that EndoTherm is a proprietary product, with exclusive intellectual property, formulation, manufacturing processes and technical know-how; the Council found no alternative supplier or equivalent solution meeting its requirements. Operational trials supported the expected energy savings. The contract value is £550,000. It was signed on 5 October 2026 and is recorded as active. The procurement comprised one lot for product supply. No award date or contract-period dates are provided in the available details.

For suppliers considering similar future requirements from Fife Council, this award shows demand for a specific heat-transfer additive to improve heating performance across non-domestic buildings. The successful supplier’s position depended on proprietary product rights and the technical ability to supply EndoTherm; the Council’s assessment also relied on evidence of exclusive manufacturing rights and trials demonstrating operational energy reductions. A credible competitor for a returning requirement would need to offer the specified product, or an alternative demonstrably equivalent to the Council’s technical and operational requirements, with evidence supporting energy-efficiency and carbon-reduction outcomes. This was product supply rather than an installation, maintenance or consultancy package, so suppliers focused on those services alone would not match the scope. The award was made directly because the Council considered competition absent for technical reasons and exclusive rights.

## 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 | Public Contracts Scotland |
| Latest notice | https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=OCT566049 |
| Notice type | OJEU - F15 - Voluntary Ex Ante Transparency Notice |
| Procurement type | Standard |
| Procurement category | Goods |
| Procurement method | Limited |
| Procurement method details | Award procedure without prior publication of a call for competition |
| 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 | Complete |
| Awards status | Not specified |
| 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 01:00 - Award - OJEU - F15 - Voluntary Ex Ante Transparency Notice - https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=OCT566049

## Documents

- https://www.publiccontractsscotland.gov.uk/search/show/search_view.aspx?ID=OCT566049
  Heat-transfer additives associated with decarbonisation technologies - 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.

## Notice URLs

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

## 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-r6ebe6-0000844897. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-r6ebe6-0000844897.json.