Watch the on-demand webinar
In the on-demand webinar, experts guide you step by step through the technology behind solar green roofs and the XM3 system.
One roof, double impact: Unlock the full potential of your roof
With a solar green roof, you combine energy generation, water retention, cooling and biodiversity on a single surface. Smarter, more efficient and future-proof.
From roof to multifunctional system: the Benefits of Solar Green Roofs
Roofs are playing an increasingly important role in building performance, not just as protection, but as active layers contributing to energy, climate adaptation and liveability. By combining green roofs with solar panels, you create a system where both strengthen each other. A solar green roof generates renewable energy while cooling the roof, buffering rainwater and enhancing biodiversity. The vegetation improves solar performance, and the lightweight, ballast-free design makes it suitable for both new-build and existing roofs. The result is a more efficient, future-proof building that maximises every square metre of roof space.
How a solar green roof works
A lightweight green roof system forms the foundation, with vertical solar panels installed above. Because the system is ballast-free and fully prefabricated, the load remains low and installation is straightforward.
The key benefits:
- No ballast required, suitable for many existing roofs
- Lightweight build-up, ideal for limited load-bearing capacity
- Fast installation thanks to a smart, modular system
- Sufficient space for greenery, light and water
This is not a combination of two separate systems, but one integrated solution.
Why this combination performs better
The real advantage lies in the interaction between green and solar.
Green roofs provide cooling and reflect sunlight, directly improving the performance of solar panels. Especially when combined with vertical bifacial panels.
Instead of a single peak at midday, this creates a more balanced energy profile, with production in both the morning and afternoon.
This results in:
- More stable energy generation
- More efficient use of sunlight
- Reduced peak load on the grid
And in practical terms, less dirt accumulation and easier maintenance.
About the partnership: Sempergreen & Over Easy Solar
Sempergreen and Over Easy Solar have built a strong partnership focused on innovation and sustainability. Together, we combine the power of green roofs with the efficiency of vertical solar panels, transforming roofs into multifunctional spaces.
Sempergreen is a global market leader in green roofs, bringing extensive expertise in vegetation and water retention. This ensures roofs are not only greener, but also more climate-resilient and functional.
Over Easy Solar develops cutting-edge vertical solar panels that optimize energy generation without the drawbacks of traditional systems, such as heavy weight or complex installation.
By combining this expertise, we create a solution that goes beyond the sum of its parts, a roof that actively contributes to energy, biodiversity and climate adaptation.
XM3: the next generation
With the XM3 system by Over Easy Solar, this combination becomes even more powerful.
The system is designed to deliver more energy, with less weight and shorter installation time.
- Up to 28% higher energy yield
- Only ±12 kg/m²
- No ballast or intrusive roof fixation required
- Up to 33% faster installation
- Suitable for almost any flat roof
Everything is designed with the roof as a starting point, not a limitation.
Want to learn more?
Dive deeper with the whitepaper
In the whitepaper The Green Effect, you’ll find in-depth insights into performance, design considerations and real-world applications.
Book a consultation
Want to explore what this means for your project? Speak with a specialist and get tailored advice for your roof.
From concept to real-world application
Solar green roofs are not only relevant for new-built projects.
In fact, existing roofs often hold significant untapped potential. Thanks to the lightweight and ballast-free design, this solution can often be applied without major structural modifications.
Turning unused roof space into a valuable sustainability opportunity.
Queens, New York (USA) @ Over Easy Solar
Oldenzaal, The Netherlands
Ready to take the next step?
Whether you’re in the design phase or looking to optimize an existing roof, the combination of solar and green roofs offers immediate opportunities.