Completed Projects

This project evaluated the feasibility and benefits of deploying Mixergy’s innovative smart hot water systems within social housing and high-demand residential environments. Mixergy, an Oxford University spin-out, has developed advanced thermal storage technology that heats water from the top down and integrates seamlessly with solar PV, heat pumps, and smart energy tariffs. The aim was to assess how this technology could reduce household energy bills, lower carbon emissions, and alleviate pressure on the national grid.
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Working in partnership with the University of the West of Scotland (UWS) and CeNZ-HighDB, the project involved site assessments, data collection on energy usage and infrastructure, technical feasibility analyses, and financial modelling. Results demonstrated strong potential for cost and carbon savings, particularly when integrated with renewable energy systems. The study also identified pathways for large-scale deployment across social housing stock, supporting the UK’s transition to low-carbon heating.
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The findings have been summarised in a feasibility report and shared with key stakeholders, providing an evidence base for further trials.

The project successfully assessed the feasibility of deploying Allume Energy’s SolShare PV technology in a 36-flat social housing complex. SolShare solution, allows multiple flats to share a single solar system, allocating generation (kWp) based on each flat’s EPC requirements to maximise self-consumption and reduce energy bills.
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All planned activities have been completed. The site assessment evaluated roof capacity, building layout, and electrical infrastructure. Energy usage and metering data for the 36 flats were collected and analysed. A technical feasibility study confirmed that the available roof space can support a PV system sufficient to deliver meaningful energy savings to tenants. Financial modelling projected savings with a viable payback period, demonstrating strong potential for cost-effective decarbonisation.
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Findings were compiled into a feasibility report, which has been shared with stakeholders. A final presentation was delivered highlighting the project’s outcomes and a clear reuse case for similar social housing stock.
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This project provides a validated framework for deploying shared solar solutions in a multi-residential building (type-1), supporting tenant affordability and the transition to net-zero housing.

The project outputs outlined below provide guidance to reforming the Retrofit Scotland website into relevant sharing platform that showcases retrofitting best practice. The platform uses case studies, and guidence produced by external sources and the outputs from the CeNZ HighDB project outputs, serving as a key resource for dissemination.
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– Summary document of the review of the existing Retrofit Scotland case studies, ensuring new platform will be built on progressed work and dataset
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– Website mock up showing improved case study display, and a clear process for new case studies to be acquired for dissemination through the website. These documentations will be supplied to a web designer for website upgrade.