---
title: "Domestic Solar PV Group Purchasing Scheme 2026"
ocid: "ocds-h6vhtk-05d885"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05d885"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05d885.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05d885.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "WEST SUSSEX COUNTY COUNCIL"
published: "2026-05-15"
---

# Domestic Solar PV Group Purchasing Scheme 2026

Buyer: WEST SUSSEX COUNTY COUNCIL  
Current stage: Award  
OCID: ocds-h6vhtk-05d885

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## Summary

The "Domestic Solar PV Group Purchasing Scheme 2026" is a procurement initiative led by West Sussex County Council, aiming to secure the supply and installation of photovoltaic (PV) panels and battery storage for residents across Sussex. This procurement falls within the services category, specifically focusing on solar installation and related energy services. Initiated as a tender, the procurement process has now reached the award stage with RetrofitWorks Limited being the supplier. The scheme was designed to facilitate domestic solar energy solutions, thereby supporting local energy sustainability efforts. The contract period spans from 18th May 2026 to 18th May 2031, with potential extensions up to 2033. The entire undertaking is estimated at a gross value of £3,945,756, with the service delivery targeting areas within the UKJ2, UKJ27, and UKJ28 regions of the United Kingdom.

This tender provides substantial business growth opportunities for companies specialising in renewable energy solutions. Small and medium-sized enterprises (SMEs), particularly those with expertise in PV and battery installation, stand to benefit significantly from the scale of this project. The procurement process adopted an open procedure, which allows for a wide range of eligible bidders, fostering competitive pricing and innovation in service delivery. The focus on achieving economies of scale in conjunction with the project's sustainability goals makes it a lucrative avenue for companies aiming to establish or expand their presence in the renewable energy market. Successful bidders can leverage this opportunity to showcase their capability in handling large-scale installations while contributing to the region's green energy ambitions.

## Notice

Collective purchasing scheme for the supply and installation of photovoltaic panels (PV) and battery storage to be operated for Residents of Sussex

### Planning Information

In May 2025, West Sussex County Council (WSCC) launched a procurement exercise to identify an experienced partner capable of delivering a council-supported solar PV and battery storage scheme for residents and small businesses in Sussex, including East Sussex and Brighton & Hove.
Under the terms of this procurement, WSCC required the delivery partner to manage a network of pre-vetted installers with the experience and capacity to deliver a large volume of installations on time, to a high standard, and at a competitive price for Sussex residents. Their responsibilities also included delivering and managing all aspects of the customer journey from targeted marketing and lead generation to customer service, installation, and aftercare; reporting to WSCC as required.
By realising economies of scale made possible by the volume of customer referrals, the delivery partner was also asked to achieve the installations at a price that is demonstrably lower than prevailing industry average install costs. WSCC would derive a modest commission from the delivery partner for each installation completed in order to cover its costs and ensure the scheme is cost neutral to the councils involved, while also contributing toward the county council’s action on fuel poverty.
2. Current status
Following evaluation of the tenders submitted earlier this year, WSCC decided to terminate the procurement as it was not possible to identify the most advantageous tender and recommend contract award. 
WSCC has reviewed its procurement approach and identified changes it wishes to make to the instructions given to bidders and the evaluation methodology applied. These improvements are intended to improve the fairness and effectiveness of the process and officers’ ability to evaluate bids with diverse delivery models on a like for like basis.
Once the review is complete and changes implemented, WSCC intends to go back out to the market at the earliest opportunity. 
Market engagement
WSCC is currently finalising its revised procurement approach. It is seeking views on the proposed changes, which will ensure bidders provide sufficient evidence that they can deliver a long-term, sustainable scheme to a high quality and at a competitive price for residents.
Specifically, WSCC will be requesting a greater level of detail in relation to scheme marketing and financial transparency as follows: 
• Marketing - Provide a detailed, costed, and targeted marketing plan that is realistically capable of generating a significant number of new customer registrations (minimum 7,000) per scheme round? Bidders will be asked to specify a) detailed overview of marketing approach b) data sets used to identify target properties c) specific marketing channels used to reach customers d) company resources (staff, budget, channels etc.) available to manage and deliver marketing activity e) precise information about roles and responsibilities in delivering the marketing plan (including any anticipated role played by the local authority) f) clear evidence of where you have previously delivered this approach successfully and at an equivalent scale. 
• Financial transparency - Based on your company’s operating model and using group purchasing to drive quality and competitive pricing, provide detailed cost information for a defined sample of solar PV and battery installations. Bidders will be provided with set assumptions on which to base their calculations. In responding to this element of the quality evaluation, bidders will provide a breakdown of all items that would influence the cost per kWp to the customer when installing at scale including a) technical hardware b) scaffolding c) management overhead d) commission from installer to delivery partner e) management fee to WSCC e) profit margin. Bidders that consider themselves to be delivery partners (i.e. customer-facing intermediary companies working with accredited installers) will be asked to complete this element of the bid with an installer to ensure information is accurate and up to date.
QUESTIONS
Respondents are asked to consider these proposed amendments and respond to the following questions:
• In responding to this opportunity, is your company able to provide the breadth and level of detail required by WSCC?
• In relation to marketing and financial transparency, please specify what information your company would be able to provide?
• If you are unable to provide a particular piece of information, please specify why not.
• Would the requirement to provide this additional level of detail deter you from bidding for this contract?
Please be aware that the detailed cost information provided by bidders forms part of the quality evaluation only as it directly affects the delivery partner’s ability to provide a long-term, sustainable scheme for Sussex residents.
Please provide your response via email to David.edwards@westsussex.gov.uk by 5pm on 14th November 2025.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/044861-2026 |
| Notice type | UK6 - Contract Award Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Open |
| Procurement method details | Open procedure |
| Tender suitability | SME |
| Awardee scale | SME |
| All stages | Planning, Tender, Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 15 May 2026 |
| Submission deadline | 9 Mar 2026 |
| Future notice date | 5 Jan 2026 |
| Award date | 10 May 2026 |
| Contract period | 17 May 2026 - 18 May 2031 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | £5,800,000 |
| Lots value | £5,800,000 |
| Awards value | £3,288,130 |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | WEST SUSSEX COUNTY COUNCIL |
| Locality | CHICHESTER |
| Post town | Portsmouth |
| Postcode | PO19 1RG |
| Country | England |
| ITL 1 | TLJ South East (England) |
| ITL 2 | TLJ2 Surrey, East and West Sussex |
| ITL 3 | TLJ27 West Sussex (South West) |
| Local authority | Chichester |
| Electoral ward | Chichester Central |
| Westminster constituency | Chichester |
| Delivery location | TLJ2 Surrey, East and West Sussex, TLJ27 West Sussex (South West), TLJ28 West Sussex (North East) |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 1 |
| Supplier names | RETROFITWORKS |

## CPV Codes

### Divisions

- 09 - Petroleum products, fuel, electricity and other sources of energy
- 71 - Architectural, construction, engineering and inspection services

### Codes

- 09331000 - Solar panels
- 09332000 - Solar installation
- 71314000 - Energy and related services

## Release History

- 15 May 2026 at 11:07 - Award - UK6 - Contract Award Notice - https://www.find-tender.service.gov.uk/Notice/044861-2026
- 12 Feb 2026 at 13:23 - Tender - UK4 - Tender Notice - https://www.find-tender.service.gov.uk/Notice/012898-2026
- 31 Oct 2025 at 20:55 - Planning - UK2 - Preliminary Market Engagement Notice - https://www.find-tender.service.gov.uk/Notice/070276-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/044861-2026
  15th May 2026 - Contract award notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/012898-2026
  12th February 2026 - Tender notice on Find a Tender
- https://www.find-tender.service.gov.uk/Notice/070276-2025
  31st October 2025 - Preliminary market engagement notice on Find a Tender
- https://atamis-7669.my.salesforce-sites.com/?SearchType=Projects
  Please access the tender pack via recently published tender on the Atamis portal.

## Notice URLs

- https://www.legislation.gov.uk/ukpga/2023/54/contents
- https://www.westsussex.gov.uk

## 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-05d885. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05d885.json.