---
title: "HNZP Framework Call off Contract Lot 3.1 - Heat Network Routing and growth model"
ocid: "ocds-b5fd17-43c41005-a4ac-4089-8985-42a906e19e4f"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-43c41005-a4ac-4089-8985-42a906e19e4f"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-43c41005-a4ac-4089-8985-42a906e19e4f.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-43c41005-a4ac-4089-8985-42a906e19e4f.json"
source: "Contracts Finder"
current_stage: "Award"
buyer: "DESNZ"
published: "2025-12-01"
---

# HNZP Framework Call off Contract Lot 3.1 - Heat Network Routing and growth model

Buyer: DESNZ  
Current stage: Award  
OCID: ocds-b5fd17-43c41005-a4ac-4089-8985-42a906e19e4f

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-b5fd17-43c41005-a4ac-4089-8985-42a906e19e4f)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-b5fd17-43c41005-a4ac-4089-8985-42a906e19e4f.json)

## Summary

The Department for Energy Security and Net Zero (DESNZ) has completed the procurement process for the "HNZP Framework Call off Contract Lot 3.1 - Heat Network Routing and Growth Model." This contract, classified under the technical services category, was awarded through a selective procurement method involving a call-off from a framework agreement. The contract, valued at £239,000, commenced on 1st December 2025 and runs until 31st March 2026. DESNZ's headquarters are located at Whitehall Place, London, and the contract is applicable to various regions including the British Overseas Territories, Channel Islands, Europe, Isle of Man, Rest of the World, and the United Kingdom. The award was made to Environmental Resources Management Ltd on 19th November 2025, with the contract officially published on 1st December 2025.

This tender offers significant growth opportunities for businesses specialising in technical services, specifically in the domains of heat network zoning and modelling. The procurement is well-suited for both large enterprises and small to medium-sized enterprises (SMEs) that can engage in selective tendering processes. The opportunity to supply deliverables across a wide geographical range presents an advantageous platform for firms with the capability to operate internationally. Businesses in similar sectors can leverage their expertise to compete effectively in future tenders within this framework agreement.

## Notice

This Contract between the Buyer and the Supplier is for the supply of Deliverables, being Heat Network Zoning Routing and Growth Model.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/fbb942da-b5b8-4561-a435-3ea268c9a447 |
| Notice type | Award Notice |
| Procurement type | Framework |
| Procurement category | Services |
| Procurement method | Selective |
| Procurement method details | Call-off from a framework agreement |
| Tender suitability | SME |
| Awardee scale | Large |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 1 Dec 2025 |
| Submission deadline | 7 Nov 2025 |
| Future notice date | Not specified |
| Award date | 19 Nov 2025 |
| Contract period | 1 Dec 2025 - 31 Mar 2026 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £239,000 |
| Lots value | Not specified |
| Awards value | £239,000 |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | DESNZ |
| Locality | LONDON |
| Post town | South West London |
| Postcode | SW1A 2EG |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI3 Inner London - West |
| ITL 3 | TLI35 Westminster and City of London |
| Local authority | Westminster |
| Electoral ward | St James's |
| Westminster constituency | Cities of London and Westminster |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | ENVIRONMENTAL RESOURCES MANAGEMENT |

## CPV Codes

### Divisions

- 71 - Architectural, construction, engineering and inspection services

### Codes

- 71356000 - Technical services

## Release History

- 1 Dec 2025 at 09:07 - Award - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/fbb942da-b5b8-4561-a435-3ea268c9a447

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/fbb942da-b5b8-4561-a435-3ea268c9a447
  1st December 2025 - Awarded contract notice on Contracts Finder
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/d834775d-54bc-4ebd-9ec8-e5ec89966607
  n/a

## 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-b5fd17-43c41005-a4ac-4089-8985-42a906e19e4f. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-43c41005-a4ac-4089-8985-42a906e19e4f.json.