Public Funding for Energiesprong UK Limited

"Transform-ER" (Transform. Engage. Retrofit) brings together an experienced and diverse consortium to tackle multiple barriers to retrofitting homes. The vast majority of the UK's existing housing stock will still be present by 2050 and therefore must comply with Net Zero 2050 legislative objectives. The current retrofit market in the UK has insufficient depth of capacity and breadth of capability to satisfy the need of retrofitting over 1 million homes per year, to achieve this. Hence a transformational approach is required, which will leverage the best aggregated learning from multiple, key stakeholder representatives (the consortia), a plethora of prior projects, and an enhanced level of coordination and structure. In tandem, Transform-ER will embrace the migration towards offsite construction, the adoption of Modern Methods and take the best learning from other manufacturing-led sectors to apply to the retrofit market. The project will realise systemic change to enable rapid deployment of high quality retrofit solutions, targeting delivery of 1m homes per year by 2030\. Transform-ER adopts the Product Platform Rulebook's 'Demand, Develop, Deploy' structure to envisage our future retrofit system. Efforts across each of these work packages will come together, creating the following benefits: * Better data on portfolios and projects, reducing risk and enabling visibility of pipelines * Clear interoperability rules for new products, enabling kits of parts to be brought together * Routes to market for existing and new verified solutions, with a streamlined and simplified accreditation route * A product database and procurement platform, which uses data to create a competitive market place for offsite products alongside traditional * A new approach to contracting for delivery, based on the Heathrow Terminal 5 model, which incentivises collaboration to achieve completion on time and to budget, through innovative profit structure. * A culture change programme which enables organisations to adopt a more collaborative approach. * A finance and insurance supported vehicle for delivery of retrofit. All of the new approaches will be underpinned by an end-to-end data platform, enabled by a set of guidelines to enhance the structure, control and consistency of retrofit delivery, in association with a fair and equitable market vehicle - a Community Interest Company. A Retrofit Rulebook will be developed which will write up the activities in the project as case studies, and set out clear guidance for other industry actors, and those wishing to join the retrofit revolution.

**The retrofit challenge** There are 29 million homes in the UK, all of which require some form of retrofitting to help achieve our net zero goals by 2050\. This means we need to tackle 2 homes a minute between now and then. An under-developed supply chain and spiralling sector costs are further complicating this mammoth task. But what if we could pair digital tools with existing learning and information to tackle these challenges and make retrofit at the scale and speed we need a reality? **Energiesprong StockMatch** Drawing on its experience of rolling out whole house retrofit in the UK, Energiesprong UK (ESUK) is developing a data-driven retrofit pipeline generation tool known as 'StockMatch.' This will identify properties of common housing archetypes at national level and match them with archetype-level retrofit designs. It's designed to help reduce costs, nurture the supply chain and unlock a functioning, self-financing whole house retrofit market by: \*Delivering significantly shortened design time \*Incorporating real-life performance data to help reduce risk, improve the business case and secure finance. \*Focusing on scalable, offsite manufactured and smart energy solutions to expand the market. \*Aggregating demand from Housing Providers that own these archetypes to provide a pipeline for suppliers and enabling investment in manufactured solutions. The result? A zero-carbon roadmap for Housing Providers, with a business case and direct links to installers. Where whole house retrofit is not immediately possible, individual measures can be procured instead. Grant eligibility is also assessed. The primary clients are social housing providers, retrofit contractors and component manufacturers. **Making iterative learning the industry standard** StockMatch draws on Energiesprong UK's learning from rolling out the revolutionary Dutch-developed Energiesprong approach to decarbonising housing -- from in-depth knowledge of the barriers to a deep understanding of the leverage points for change. The Energiesprong model combines maintenance savings with income from renewable energy and householder contributions to create a 30-year financial case for zero carbon retrofit. ESUK also has a wealth of digital experience, including developing a housing stock mapping tool, as well as a strong monitoring and performance analysis background. StockMatch will be tested through Energiesprong UK's involvement in the Mayor of London's Retrofit Accelerator -- Homes Innovation Partnership, which brings together eight social Housing Providers and four main contractors delivering a pipeline of 1,600 homes.

The **BUNZ (Build-Up Net-Zero)** concept creates a new sustainable model for creating desirable net-zero performance-guaranteed new homes, whilst retrofitting existing homes to net zero. Energiesprong UK (ESUK) was set up to drive forward the market for desirable, performance guaranteed, net-zero homes, and support innovation to deliver them. We work between social housing providers and the supply chain to help create whole-house solutions which improve quality and which can be rapidly scaled to meet the UK's climate challenge. To date three pilot projects have been completed across five landlords, with further projects underway. In 2019 ESUK identified an opportunity for a build-up model, where new apartments are built on top of existing blocks, which are retrofitted to net-zero standards at the same time. BUNZ addresses many of the challenges set out in the Construction Sector Deal. It supports the target for 1.5m new homes by 2022, it uses digital design and offsite manufacturing. It drives collaboration between client and supply chain. It uses whole-life asset value, and it exceeds the target for halving the energy consumption in new and existing buildings by 2030, instead ensuring homes are retrofitted and built to 2050 standards - net zero. The offsite manufacturing approach driven by the Energiesprong standard drives improved quality and performance, reducing site times. This is even more important post-C19, when reduced access to homes, and limited site working practices are driving up construction delivery period and costs. Residents can also remain in situ. Exeter City Council has identified a pipeline of apartments and this funding will allow the development of the procurement approach to overcome the short-term stop-start typical approach to construction projects. Focusing the procurement on the whole-life performance and cost also changes the relationship between client and supplier. Energiesprong will work with the DEEP-ER consortium (led by Prewett Bizley and KIN) to deliver the project. BUNZ allows the creation of affordable new homes without encroaching on green spaces, providing an opportunity to reduce overcrowding associated with worse COVID outcomes. Our solution will use new homes as an opportunity to improve the business case for retrofitting to achieve UK net-zero goals.