---
title: "Contract Award Notice - Home Energy Model - Lot 3"
ocid: "ocds-b5fd17-4486a667-436c-4a1c-af0c-e4e29350db53"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-b5fd17-4486a667-436c-4a1c-af0c-e4e29350db53"
markdown_url: "https://d3tenders.com/contract/ocds-b5fd17-4486a667-436c-4a1c-af0c-e4e29350db53.md"
json_url: "https://d3tenders.com/contract/ocds-b5fd17-4486a667-436c-4a1c-af0c-e4e29350db53.json"
source: "Contracts Finder"
current_stage: "Award"
buyer: "DESNZ"
published: "2025-05-12"
---

# Contract Award Notice - Home Energy Model - Lot 3

Buyer: DESNZ  
Current stage: Award  
OCID: ocds-b5fd17-4486a667-436c-4a1c-af0c-e4e29350db53

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-b5fd17-4486a667-436c-4a1c-af0c-e4e29350db53)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-b5fd17-4486a667-436c-4a1c-af0c-e4e29350db53.json)

## Summary

The procurement process, titled "Contract Award Notice - Home Energy Model - Lot 3," was conducted by the Department for Energy Security and Net Zero (DESNZ). This project falls under the IT services industry category, specifically focusing on consulting, software development, Internet, and support, as well as research and development consultancy services. The geographical scope covers the United Kingdom, British Oversea Territories, Channel Islands, the Isle of Man, the rest of Europe, and globally. Initiated as an open procedure procurement above the threshold, the contract was awarded on 14th April 2025, following the completion of the tender stage on 17th March 2025. The contract will run from 14th April 2025 to 13th April 2027, with a contract value of £1,207,537.50 GBP.

This tender provides a significant opportunity for SMEs, as the winning supplier, City Science Corporation, falls within this category. The project, being part of the Home Energy Model program, requires expertise in IT services related to energy management systems, making it an attractive prospect for businesses specialising in software development, energy efficiency consulting, and related R&D services. Companies with capabilities in these fields, especially those looking to expand their footprint in the energy and IT sectors across diverse geographical regions, would be well-suited to compete in similar future procurements. The successful bidder's engagement in this tender demonstrates potential for strengthening business relationships with governmental bodies such as DESNZ and gaining a foothold in the growing market of smart energy solutions.

## Notice

Contract Award Notice for: HEM for existing homes Lot 3 of the procurement program Home Energy Model (HEM), Standard Assessment Procedure (SAP) and Reduced Data Standard Assessment Procedure (RdSAP) - Maintenance and Methodologies,

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Contracts Finder |
| Latest notice | https://www.contractsfinder.service.gov.uk/Notice/5bfec4b4-f6f7-4323-a41b-80dc20207ad5 |
| Notice type | Award Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Open |
| Procurement method details | Open procedure (above threshold) |
| Tender suitability | SME |
| Awardee scale | SME |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 12 May 2025 |
| Submission deadline | 17 Mar 2025 |
| Future notice date | Not specified |
| Award date | 13 Apr 2025 |
| Contract period | 13 Apr 2025 - 13 Apr 2027 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £1,207,537 |
| Lots value | Not specified |
| Awards value | £1,207,537 |
| 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 2JP |
| 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 | CITY SCIENCE |

## CPV Codes

### Divisions

- 72 - IT services: consulting, software development, Internet and support
- 73 - Research and development services and related consultancy services

### Codes

- 72000000 - IT services: consulting, software development, Internet and support
- 73000000 - Research and development services and related consultancy services

## Release History

- 12 May 2025 at 09:55 - Award - Award Notice - https://www.contractsfinder.service.gov.uk/Notice/5bfec4b4-f6f7-4323-a41b-80dc20207ad5

## Documents

- https://www.contractsfinder.service.gov.uk/Notice/5bfec4b4-f6f7-4323-a41b-80dc20207ad5
  12th May 2025 - Awarded contract notice on Contracts Finder
- https://www.contractsfinder.service.gov.uk/Notice/Attachment/d3ccf65d-946c-4212-a999-204b8bd6eb70
  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-b5fd17-4486a667-436c-4a1c-af0c-e4e29350db53. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-b5fd17-4486a667-436c-4a1c-af0c-e4e29350db53.json.