---
title: "Homes for Net Zero Phase 3 (HfNZ P3)"
ocid: "ocds-h6vhtk-068249"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-068249"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-068249.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-068249.json"
source: "Find A Tender Service"
current_stage: "Planning"
buyer: "DEPARTMENT FOR ENERGY SECURITY & NET ZERO"
published: "2026-04-14"
---

# Homes for Net Zero Phase 3 (HfNZ P3)

Buyer: DEPARTMENT FOR ENERGY SECURITY & NET ZERO  
Current stage: Planning  
OCID: ocds-h6vhtk-068249

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## Summary

The Department for Energy Security & Net Zero is initiating a procurement process for the "Homes for Net Zero Phase 3" research programme. This undertaking is within the research services industry and falls under public authority central government procurement. Located in London, the procurement is currently in the planning stage with key engagements scheduled. A Supplier Engagement Call is planned for 29th April 2026, inviting interested participants to register by 28th April. The final submission date for clarifications is set for 8th May 2026, with further notices expected by 20th May 2026.

This tender offers opportunities for businesses specialising in research services, energy-efficiency consultancy, heating engineering, and social research. The programme seeks contractors for trial management, data analysis, consumer engagement, and installation of low-carbon heating measures. With a detailed framework involving multiple lots, small and medium-sized enterprises (SMEs) and voluntary and community sector enterprises (VCSEs) can effectively compete, enhancing their portfolios by collaborating across various work packages and contributing to cutting-edge research on decarbonisation and climate resilience.

## Notice

DESNZ is seeking to procure a contractor/s to deliver Phase 3 of the Homes for Net Zero research programme (HfNZ P3). This is a continuation of our multiyear, largescale research and demonstration trial, building on the existing cohort of approximately 1,250 owner-occupied homes. Among other tasks the appointed contractor(s) will be responsible for trial management and coordination, longitudinal monitoring, data collection and processing, and participant engagement - including physical measurements in homes and social research with occupants. It will include research on practical, scalable pathways to decarbonising owner-occupied homes, particularly complex-to-decarbonise and space constrained properties, with a focus on low carbon heating. This includes evaluating the real-world performance, costs, and user experience of heat pumps (including reversible air-to-air systems), alternative electric heating and domestic hot water solutions. Consumer engagement approaches, and measures to improve resilience to a future climate, such as overheating mitigation, are also key elements of HfNZ P3. The programme will require delivery through competitively procured work packages (lots); * Lot 1: Trial management and co-ordination - including programme management of whole trial, collecting data from monitoring devices and ensuring high data quality, managing trial participants, supporting additional technology trials through an innovation test bed; * Lot 2: Data analysis and research - including technical analysis of in-home monitoring data to answer the research questions, and collaboration with Lots 3 and 4 to ensure methods are designed to address those questions. * Lot 3: Consumer engagement and social research - establishing best practice consumer engagement approaches to transition homes to low carbon heating and using these to support the delivery of measures in Lot 4, carrying out social research to support the research objectives in collaboration with Lot 2. * Lot 4: Design and installation of low carbon heating measures in homes - including, air-source heat pumps, reversible air-air heat pumps, alternative approaches to electric domestic hot water in space constrained homes and the specification and installation of monitoring equipment. Contractors will need to work collaboratively across the work packages as well as with DESNZ and possibly with linked programmes, notably Built Environment Adaptation and Resilience (BEAR) and Heat Pump Ready Programme (info here: https://www.gov.uk/government/publications/heat-pump-ready-programme/information-about-the-heat-pump-ready-programme#latest-opportunity-from-2026). Outputs are likely to include regular, publicly accessible research publications; including two annual reports with research findings, an annual trial delivery summary, and publication of datasets (subject to GDPR). The programme will also deliver thematic research briefs and a final report at project completion, with outputs designed to directly inform DESNZ policy development and analysis on clean heat, energy efficiency, and climate resilience. DESNZ is holding a supplier event on MS Teams on Wednesday 29th April 2026 from 1400 - 1600, consisting of presentations by DESNZ and interactive feedback sessions.

### Planning Information

There will be a Supplier Engagement Call on 29th April 2026 from 1400 – 1600 GMT. 
If you are interested in this potential opportunity, please complete the MS Form with your company details. 
Link for sign-up form: https://forms.office.com/e/KgpgXyDnpr
Following confirmation of company details and contact information, an ‘MS Teams’ invite will be circulated for the market engagement event on the week of the event. We would ask that you have a maximum of 2 attendees from each organisation.
Participants will need to register by 5pm on 28.04.2026. 
Please send any clarification questions or queries to internationalclimateandenergy.procurement@energysecurity.gov.uk
by 5pm GMT on 08.05.2026.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/033899-2026 |
| Notice type | UK2 - Preliminary Market Engagement Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Not Specified |
| Procurement method details | Not specified |
| Tender suitability | SME, VCSE |
| Awardee scale | Not specified |
| All stages | Planning |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 14 Apr 2026 |
| Submission deadline | Not specified |
| Future notice date | 20 May 2026 |
| Award date | Not specified |
| Contract period | 31 Jul 2026 - 31 Mar 2029 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £8,150,000 |
| 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 | DEPARTMENT FOR ENERGY SECURITY & NET ZERO |
| Locality | LONDON |
| Post town | South West London |
| Postcode | SW1A 2HP |
| 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 |

## CPV Codes

### Divisions

- 71 - Architectural, construction, engineering and inspection services
- 73 - Research and development services and related consultancy services
- 79 - Business services: law, marketing, consulting, recruitment, printing and security

### Codes

- 71314300 - Energy-efficiency consultancy services
- 71314310 - Heating engineering services for buildings
- 73100000 - Research and experimental development services
- 73110000 - Research services
- 73300000 - Design and execution of research and development
- 79315000 - Social research services

## Release History

- 14 Apr 2026 at 14:58 - Planning - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/033899-2026

## Documents

- https://www.find-tender.service.gov.uk/Notice/033899-2026
  14th April 2026 - Preliminary market engagement notice on Find a Tender

## Notice URLs

- https://forms.office.com/e/KgpgXyDnpr
- https://www.gov.uk/government/publications/heat-pump-ready-programme/information-about-the-heat-pump-ready-programme#latest-opportunity-from-2026
- 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-068249. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-068249.json.