---
title: "Prototype Retrofit Project"
ocid: "ocds-h6vhtk-05face"
canonical_url: "https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05face"
markdown_url: "https://d3tenders.com/contract/ocds-h6vhtk-05face.md"
json_url: "https://d3tenders.com/contract/ocds-h6vhtk-05face.json"
source: "Find A Tender Service"
current_stage: "Award"
buyer: "LONDON BOROUGH OF CAMDEN"
published: "2025-12-19"
---

# Prototype Retrofit Project

Buyer: LONDON BOROUGH OF CAMDEN  
Current stage: Award  
OCID: ocds-h6vhtk-05face

[View canonical contract page](https://d3tenders.com/contract/?ocid=ocds-h6vhtk-05face)  
[Download OCDS JSON](https://d3tenders.com/contract/ocds-h6vhtk-05face.json)

## Summary

The London Borough of Camden has completed the procurement process for the "Prototype Retrofit Project," intended to develop a rooftop solar PV generation and battery energy storage systems solution across its properties. The procurement, classified under services and industry categories such as Electricity, Solar Energy, and Construction Work, involved a direct award method justified by the uniqueness of the prototype development. Legal & General Assurance Society Limited and Sero Life Limited have been selected as suppliers. Located in London, the contract, valued at £110,000,000, starts on April 2, 2026, and runs until April 3, 2056, with an energy services agreement being a central feature. Initial legal and financial structures were developed to provide residents with discounted energy bills, marking the project's noteworthy economic sustainability goals.

This tender presents significant business growth potential, especially for firms involved in energy services, construction, and innovation in energy solutions. Companies specialising in solar energy installation, battery storage systems, and financing mechanisms stand to benefit, particularly those focused on public sector collaborations. SMEs with expertise in renewable projects can leverage this prototype's promise of being part of a government-backed sustainability initiative. The substantial contract value and the long-term nature of this project create a stable revenue stream, with the possibility of wider applications in future decarbonisation efforts by London Borough of Camden and other entities alike.

## Notice

The London Borough of Camden (LBC) is proposing to develop a prototype solution to install rooftop solar PV generation and battery energy storage systems (BESS) to generate, store and optimise power usage at properties. The solution will develop a billing platform to provide residents with discounted energy bills and paying back the investor. The billing platform, payback mechanism and associated legal and financing structures are bespoke to the prototype. It is envisaged that the project will comprise an Energy Services Agreement (ESA) with a Special Purpose Vehicle (ESCo) and a number of supporting and ancillary contractual arrangements for the development of the prototype solution (including initial appointments for development services prior to entering into the ESA and other main project documents).

### Procurement Information

The relevant justifications are paragraph 2 (Prototypes and development) and paragraph 5 (single suppliers) of Schedule 5 of the Procurement Act 2023. Paragraph 2 of Schedule 5 (Prototypes and development): The project is being developed by LBC as a prototype to test the suitability of a retrofit solution to provide more affordable and more sustainable homes for its residents. It is being developed with L&G, supported by a specialist energy services platform provided by Sero. The prototype seeks to test the suitability and viability of an off-balance sheet, project finance structure (ESCo) that will provide the funding, installation, maintenance and operation of Energy-as-a-Service assets (Solar PV and BESS) onto residential properties owned by LBC for 30 year period. The project is unprecedented in both its offering and scale and duration. Approximately 3,000 homes are within scope, representing approximately 9% of LBC's housing stock. This is a prototype which is part of a wider programme of piloting different routes to decarbonisation. It involves the development of novel goods and services at the request of LBC as a trial for an even larger investment at some point in the future, which it is envisaged can be made subject to a competitive procurement. Paragraph 5 of Schedule 5 (single suppliers): the project is being developed by LBC together with a partnership between L&G and Sero who have developed know-how and other intellectual property rights relevant to the prototype solution LBC wishes to develop. LBC is not aware of any reasonable alternatives that would allow for a competitive procurement of the proposed prototype.

## Key Details

| Field | Value |
| --- | --- |
| Publication source | Find A Tender Service |
| Latest notice | https://www.find-tender.service.gov.uk/Notice/085088-2025 |
| Notice type | UK5 - Transparency Notice |
| Procurement type | Standard |
| Procurement category | Services |
| Procurement method | Direct |
| Procurement method details | Direct award |
| Tender suitability | Not specified |
| Awardee scale | Large, SME |
| All stages | Award |

## Dates

| Field | Value |
| --- | --- |
| Publication date | 19 Dec 2025 |
| Submission deadline | Not specified |
| Future notice date | Not specified |
| Award date | 19 Dec 2025 |
| Contract period | 1 Apr 2026 - 3 Apr 2056 |
| Recurrence | Not specified |

## Values

| Field | Value |
| --- | --- |
| Tender value | Not specified |
| Lots value | Not specified |
| Awards value | £110,000,000 |
| Contracts value | Not specified |

## Status

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

## Buyer

| Field | Value |
| --- | --- |
| Main buyer | LONDON BOROUGH OF CAMDEN |
| Locality | LONDON |
| Post town | North London |
| Postcode | N1C 4AG |
| Country | England |
| ITL 1 | TLI London |
| ITL 2 | TLI3 Inner London - West |
| ITL 3 | TLI36 Camden |
| Local authority | Camden |
| Electoral ward | King's Cross |
| Westminster constituency | Holborn and St Pancras |
| Delivery location | Not specified |

## Supplier

| Field | Value |
| --- | --- |
| Number of suppliers | 2 |
| Supplier names | LEGAL AND GENERAL ASSURANCE SOCIETY; SERO LIFE |

## CPV Codes

### Divisions

- 09 - Petroleum products, fuel, electricity and other sources of energy
- 45 - Construction work
- 66 - Financial and insurance services
- 71 - Architectural, construction, engineering and inspection services

### Codes

- 09300000 - Electricity, heating, solar and nuclear energy
- 45000000 - Construction work
- 66000000 - Financial and insurance services
- 71314000 - Energy and related services

## Release History

- 19 Dec 2025 at 16:20 - Award - UK5 - Transparency Notice - https://www.find-tender.service.gov.uk/Notice/085088-2025

## Documents

- https://www.find-tender.service.gov.uk/Notice/085088-2025
  19th December 2025 - Transparency notice on Find a Tender

## Notice URLs

- http://www.camden.gov.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-05face. The underlying structured data is available as OCDS JSON at https://d3tenders.com/contract/ocds-h6vhtk-05face.json.