---
title: "Preliminary Market Engagement for Thermal Improvement Works"
ocid: "ocds-h6vhtk-068038"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-068038"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-068038.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-068038.json"
source: "Find A Tender Service"
current_stage: "Planning"
buyer: "TRIVALLIS"
published: "2026-04-10"
---

# Preliminary Market Engagement for Thermal Improvement Works

Buyer: TRIVALLIS  
Current stage: Planning  
OCID: ocds-h6vhtk-068038

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## Summary

Trivallis, a public authority operating under Welsh devolved regulations, is overseeing a procurement process in the planning stage for Thermal Improvement and Whole-House Retrofit Works. The process, labelled as ‘Preliminary Market Engagement for Thermal Improvement Works’, involves a market engagement event scheduled for 6th May 2026 at The Muni Arts Centre in Pontypridd, South Wales. This event marks the progression of a procurement process aimed at enhancing energy efficiency across residential properties in the region. Key deadlines include 24th April 2026 for confirmation of event attendance, and 22nd May 2026 for submission of the related market questionnaire. The works fall under the 'works' procurement category, with a contract value of £36,000,000 gross, and are primarily focused on thermal insulation and retrofitting measures for improved energy efficiency.

This tender provides substantial opportunities for businesses specialising in energy efficiency, sustainable construction, and retrofitting services, particularly those already holding or pursuing PAS 2030 accreditation. With a focus on fabric improvement measures like wall and roof insulation, as well as low carbon installations such as air source heat pumps and solar PV systems, companies within these sectors stand to benefit from potential contracts. SMEs are encouraged to participate, given the contract's structure and appropriateness for smaller enterprises. The procurement method supports capacity building in the contractor market and anticipates procurement through a framework agreement, allowing businesses to contribute to significant residential energy upgrades across multiple locations in South Wales.

## Notice

Trivallis will be undertaking Preliminary Market Engagement (PME) for forthcoming Thermal Improvement and Whole-House Retrofit Works. The PME event will take place on 6 May 2026, from 1:00pm to 4:00pm, at: The Muni Arts Centre, Gelliwastad Road, Pontypridd, CF37 2DP. Attendance is limited to two representatives per company. Suppliers must already hold PAS 2030 accreditation, or be on track to complete accreditation (or an industry recognised equivalent) by 30 June 2026. To confirm attendance, please email procurement@trivallis.co.uk by 12:00pm on Friday 24 April 2026, including the names and email addresses of all attendees. Please note that entry will not be permitted without advance confirmation. During the session, Trivallis will present information to contractors interested in bidding for future procurement opportunities. A market questionnaire will also be issued to gather feedback to help shape: * The development of our requirements and procurement approach * The design of the procurement procedure, participation conditions and award criteria * Preparation of tender documents and specifications * Identification of capable contractors * Development of contractual terms * Capacity building within the contractor market The deadline for returning the completed questionnaire is 12:00pm on Friday 22 May 2026. The future programme is expected to include a range of whole house retrofit measures, delivered in line with Standard Assessment Procedure (SAP) methodology and PAS 2035 principles. Works may include, but are not limited to, the following: Fabric Improvement Works * Wall insulation (cavity, external and internal) * Loft, roof and roofing thermal improvements * Draught proofing and other SAP eligible fabric upgrades * External dash/render Low Carbon and Energy Efficiency Installations * Air Source Heat Pumps (ASHPs) * Hot water system efficiency improvements (cylinders, pipework, controls) * Solar PV (including removal and reinstatement) and battery storage Ventilation, Lighting and Environmental Improvements * Ventilation upgrades and passive ventilation * Energy efficient lighting * Environmental/performance monitoring sensors Supporting works necessary to enable delivery of retrofit measures, such as: * Rainwater goods replacement * External envelope repairs * Cavity extractions and damp related works (including DPC cleaning) * Building works, access and reinstatement, including canopy renewals & concrete lintels * Roofing renewals * Gas/electric meter boxes * Western Power-related works * Stitching and wall ties The scope may also include PAS 2035 roles and deliverables, such as: * Retrofit Assessment * Retrofit Coordination and compliance services * Design and specification development Trivallis may procure PAS services and installation works separately. All potential works will be delivered to residential properties owned by Trivallis across the South Wales region.

### Planning Information

Deadline for confirming attendance to the PME event is 12pm on 24/04/2026. Deadline for completing the questionnaire is 12pm on 22/05/2026.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/032920-2026 |
| Notice type | UK2 - Preliminary Market Engagement Notice |
| Procurement type | Framework |
| Procurement category | Works |
| Procurement method | Not Specified |
| Procurement method details | Not specified |
| Tender suitability | SME |
| Awardee scale | Not specified |
| All stages | Planning |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 10 Apr 2026 |
| Submission deadline | Not specified |
| Future notice date | 29 May 2026 |
| Award date | Not specified |
| Contract period | 30 Jun 2026 - 30 Jun 2030 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £30,000,000 |
| 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 | TRIVALLIS |
| Locality | PONTYPRIDD |
| Post town | Cardiff |
| Postcode | CF37 2SW |
| Country | Wales |
| ITL 1 | TLL Wales |
| ITL 2 | TLL5 South East Wales |
| ITL 3 | TLL51 Central Valleys and Bridgend |
| Local authority | Rhondda Cynon Taf |
| Electoral ward | Pontypridd Town |
| Westminster constituency | Pontypridd |
| Delivery location | TLL15 Central Valleys, TLL16 Gwent Valleys, TLL17 Bridgend and Neath Port Talbot, TLL21 Monmouthshire and Newport, TLL22 Cardiff and Vale of Glamorgan |

## CPV Codes

### Divisions

- 44 - Construction structures and materials; auxiliary products to construction (except electric apparatus)
- 45 - Construction work

### Codes

- 44112400 - Roof
- 44221200 - Doors
- 45261410 - Roof insulation work
- 45320000 - Insulation work
- 45321000 - Thermal insulation work
- 45421100 - Installation of doors and windows and related components
- 45421130 - Installation of doors and windows

## Release History

- 10 Apr 2026 at 14:33 - Planning - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/032920-2026

## Documents

- https://www.find-tender.service.gov.uk/Notice/032920-2026
  10th April 2026 - Preliminary market engagement notice on Find a Tender

## Notice URLs

- http://www.trivallis.co.uk
- 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-068038. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-068038.json.