Solar for flats made scalable, simple and cost efficient.
Improve EPC ratings, tackle fuel poverty and lower carbon emissions for apartment buildings and multi-occupancy housing.
Why have apartment buildings been left out of the solar revolution?
Historically, solar PV for flats was designed for single family houses. For UK social housing providers and developers, the one roof, one meter rule meant that solar for apartment buildings required separate cabling for every flat a logistical headache that made EPC rating improvements and SAP 10.2 compliance cost prohibitive.
A new era of solar for flats
Allume has changed the landscape. We make solar for flats simple by allowing one rooftop system to share clean energy across multiple apartments through a single, intelligent device and platform.
What is SolShare?
SolShare by Allume is the world’s first solar technology connecting multiple flats to one solar PV system. It’s the smartest way to bring solar panels to buildings. It eliminates the need for individual systems for every flat, making shared solar technically simple and commercially viable.
Boost SAP & EPC ratings
Allocate customised solar PV energy (kWp) to each individual flat. This is a game-changer for developers and asset managers looking to improve EPC ratings across a portfolio. By tailoring energy distribution to meet specific SAP calculation requirements, Allume helps high-density buildings reach modern sustainability standards.
Maximise savings for residents
By sharing energy intelligently and dynamically, SolShare ensures that more free, solar electricity is used within the building rather than being exported to the grid. This maximises self-consumption, leading to significantly lower energy bills for residents and a superior return on investment (ROI) for apartment solar projects.
What is SolShare?
SolShare by Allume is the world’s first solar technology connecting multiple flats to one solar PV system. It’s the smartest way to bring solar panels to buildings. It eliminates the need for individual systems for every flat, making shared solar technically simple and commercially viable.
Boost SAP & EPC ratings
Allocate customised solar PV energy (kWp) to each individual flat. This is a game-changer for developers and asset managers looking to improve EPC ratings across a portfolio. By tailoring energy distribution to meet specific SAP calculation requirements, Allume helps high-density buildings reach modern sustainability standards.
Maximise savings for residents
By sharing energy intelligently and dynamically, SolShare ensures that more free, solar electricity is used within the building rather than being exported to the grid. This maximises self-consumption, leading to significantly lower energy bills for residents and a superior return on investment (ROI) for apartment solar projects.

What is SolShare?
SolShare by Allume is the world’s first solar technology connecting multiple flats to one solar PV system. It’s the smartest way to bring solar panels to buildings. It eliminates the need for individual systems for every flat, making shared solar technically simple and commercially viable.
Boost SAP & EPC ratings
Allocate customised solar PV energy (kWp) to each individual flat. This is a game-changer for developers and asset managers looking to improve EPC ratings across a portfolio. By tailoring energy distribution to meet specific SAP calculation requirements, Allume helps high-density buildings reach modern sustainability standards.
Maximise savings for residents
By sharing energy intelligently and dynamically, SolShare ensures that more free, solar electricity is used within the building rather than being exported to the grid. This maximises self-consumption, leading to significantly lower energy bills for residents and a superior return on investment (ROI) for apartment solar projects.
The impact of Allume SolShare
Flats already connected
Boost SAP points
Min. cost per SAP point
Reduction in electricity bills
Allume ecosystem: Shared solar, smarter data
SolShare physically distributes energy from one array to multiple flats, while SolCentre provides real-time data transparency.
Together, they ensure fair access to clean, affordable energy for all residents.
SolShare
Smart hardware that distributes energy from a single roof to multiple units.
Reduces energy bills and carbon emissions for all residents fairly.
SolCentre
An energy management platform for usage data and system insights.
Provides users with transparency, control, and asset management.
Real-world results
“Scott Court is more than just a retrofit; it’s a blueprint for the future of socially responsible, sustainable housing.”
David Conway, Head of Asset Management, Hillcrest, Scotland
“Because the system shares free solar energy across the whole building, everyone saves more on bills than if we just had lots of individual little solar systems on the roof, each feeding one flat each.”
Adam Tilford, Sustainability Manager, UK
“One of our residents reported that her energy bill was £100 less than this same time last year. That's a serious result!””
Tania Jennings, Net Zero Climate Manager, Climate Resilience, Lewisham Council, London
“It’s not just about putting shiny new things on a building, but the fact that they improve that person’s life."
Malcolm Davies, Welsh Government, Wales
Explore solutions
SolShare supports a range of social housing and private development projects.
Let's discuss your next SolShare project
Your journey to shared rooftop solar with SolShare starts here.
Contact us today to discuss how we can support you on your next project.
Contact us to get started!
Testimonials
“The SolShare system seems to be a much fairer solution as the energy generated by the building can be shared equally to help our residents to keep their electricity costs down rather than going back to the grid.”
"We installed just 3 inverters with 3 SolShares to serve 35 properties. If it wasn’t for Allume, we couldn’t have done it, there simplywasn’t space to fit 35 inverters."
“This is an exciting first-of-its-kind project for Wales and exactly the type of thinking we need to see within the housing sector.”
“As a developer, we are proud to be bringing such a progressive scheme to the market. We have proactively worked with the various elements to bring the best technology to the scheme, and we’re thrilled with the results.”