Energy Efficiency
Cooler panels, higher output. Our roofs boost solar performance naturally through vegetation.
SOLARGREEN ROOFS POWER & NATURE IN BALANCE
Power up your roof with green energy. Our Solargreen roofs combine lush vegetation and solar panels, boosting efficiency and sustainability.
Our product
HARNESS THE SUN WHILE GREENING YOUR ROOF
Our Solargreen roof Systems unite renewable energy and lush vegetation in one smart, future ready design. The green layer naturally cools the solar panels, increasing their efficiency and lifespan, while the green roof captures rainwater, supports biodiversity and improves urban air quality.
This unique synergy not only boosts the building’s energy performance but also creates a more comfortable and climate resilient environment for people and nature alike. A Solargreen roof is more than a rooftop solution, it is a living system that transforms unused space into a powerhouse of sustainability.
Dual Climate Benefits
Generate clean energy while reducing heat stress, managing rainwater and greening cities.
Proven Expertise
Trusted worldwide. From design to maintenance, we deliver reliable, future-proof systems.
Solar panels or a green roof? You don’t have to choose anymore!
Solargreen roofs add real value to any building, especially in urban areas where every square metre matters. This smart combination of a green roof and solar energy can even be applied on pitched roofs, provided the structure can support it.
As nature comes under increasing pressure, nature-inclusive building is becoming a key focus for architects, developers and municipalities. A well designed Solar green roof creates space for both energy and biodiversity, making every project more resilient, efficient and alive.
Choose the right solargreen roof system
Feeling a bit overgrown with ideas? Don’t worry! We’ll help you find the right solution for your project. With just a few quick questions we’ll help you find the right approach and system for your pitched roof. You’ll receive customised advice to make green work for you.
SOLARGREEN BIFACIAL
The Solargreen Bificial with the bifacial vertical solar panels of Over Easy Solar brings energy and nature together in one powerful system. It combines a pre cultivated green roof with vertical bifacial solar panels in an east west setup, designed for maximum efficiency and minimal impact. Every component works in harmony to deliver smart installation, optimal performance and lasting sustainability.
This modular, lightweight system requires no ballast or mechanical fixing and has a total saturated weight of just 52 kg/m². Perfect for both new builds and renovations, even on roofs with limited load-bearing capacity, it is suitable for roof slopes from 0 to 10 degrees and is the lightest solar green roof system available today.
SOLARGREEN Ballast
The Solargreen Ballast transforms any flat roof into a powerful combination of greenery and renewable energy. It features a complete green roof system suitable for almost any type of solar panel. Installation is quick and simple, as the system is ballasted and requires no fixation to the roof structure.
With a weight starting from 80 kg/m² excluding panels, it is ideal for roofs from 100 m² and larger. The substrate depth is calculated based on wind load and ballast requirements, ensuring safety and performance. This system can also be upgraded to a Solar Flowergreen roof for even greater ecological impact.
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SOLARGREEN On Top
Solargreen On Top combines solar energy and greenery in one smart setup. This system is designed for both new and existing green roofs and suitable for slopes up to 5°.
The structure is ballasted with tiles, so no mechanical fixing to the roof is required. The system is delivered without solar panels, but nearly any PV type can be mounted, both in portrait or landscape. For every project, a custom wind load calculation and ballast plan ensure optimal safety and performance.
"People living here experience intense heat in summer, while at the same time they’re eager to generate their own solar energy.”
VVE Maccabiadelaan realised the first Dutch green roof combined with Over Easy Solar units — 500 m² Sedum and 94 panels.
SOLARGREEN PITCHED
Solar panels can also be applied on pitched green roofs, combining energy generation with elegant design. They integrate smoothly into the architecture while maintaining optimal performance.
The system offers great flexibility in layout and appearance, making it easy to adapt to different roof types and slopes. It can be installed on both vapour open and vapour tight constructions, ensuring compatibility with various building designs and materials. A smart, future ready choice for projects that unite aesthetics, sustainability and technical excellence.
Smarter together: Sempergreen × Over Easy Solar
When green meets solar. Together with Norwegian solar innovator Over Easy Solar, Sempergreen is redefining how roofs can work for both nature and energy. The lightweight, vertical and double-sided PV panels of Over Easy Solar deliver a dual energy peak, capturing sunlight from both sides throughout the day. Combined with Sempergreen’s lush green roof, which naturally cools the surroundings and boosts panel efficiency.
The result is a powerful synergy between vegetation and photovoltaics, designed for easy installation and long-term performance. Together we create efficient, climate-active surfaces that turn every roof into a generator for a greener future. Sempergreen × Over Easy Solar make every roof part of the renewable revolution.
Smart green roof systems for energy, nature and water
Our green roof systems transform rooftops into climate solutions. They retain rainwater, cool cities, enhance biodiversity and even boost solar performance. Each system is carefully engineered for durability and designed to make every square meter count for people and the planet.
NEED SOLARGREEN ROOF ADVICE? LET’S TALK!
Shannon Hoeflaken
QUESTIONS ABOUT SOLARGREEN ROOFS
Find all the answers about Solargreen Roofs, from costs and installation to sustainability, mounting systems and the benefits of combining green and solar.
What does a Solar Green Roof cost?
There is no one-size-fits-all price. The cost depends on the type of roof, surface area, plant selection, panel type, and local conditions. For each project, Sempergreen prepares a tailored calculation and energy yield report to give a clear cost–benefit overview.
What are the benefits of combining solar panels with a green roof?
Higher efficiency: PV panels produce 6–10% more energy thanks to the cooling effect of the green roof.
Longer lifespan: Lower panel temperatures reduce wear and extend durability.
Biodiversity: Sedum and biodiverse roofs create habitat for bees, butterflies, and pollinators.
Sustainable building: Combining solar and green roofs contributes to higher BREEAM and LEED scores.
Improved rainwater management: Green roofs store and delay runoff, relieving urban drainage systems.
Is a solar green roof more sustainable than a regular PV installation?
Yes. By integrating vegetation, the system adds ecological and social value on top of renewable energy production. It enhances biodiversity, reduces heat stress in cities, improves air quality, and makes buildings more climate-resilient.
Can solar panels and green roofs be combined on pitched roofs as well?
Yes, Sempergreen systems are suitable for both flat and pitched roofs. On pitched roofs, green roofs and solar panels can be seamlessly combined without technical issues.
Does Sempergreen also supply solar panels?
Sempergreen provides complete Solar Green Roof solutions in collaboration with trusted partners.
With the Over Easy Solar vertical panels, you receive a fully integrated system: green roof, solar panels, mounting frames, and all required materials.
With the Solar Sedum Roof or Solar Biodiverse Roof, Sempergreen supplies the complete green roof system including mounting materials and carriers, but excluding the solar panels themselves.
Do solar panels need special mounting on a green roof?
Yes, specialised mounting systems are used to ensure stability without damaging the green roof layers. Sempergreen supplies fully tested solutions for both Sedum and Biodiverse roofs, ensuring long-term performance and safe installation.