Modern urban buildings must take maximum advantage of all spaces, including rooftops. In many cities, there are regulations that require green roofs, and often architects and planners believe that it rules out solar energy. But the good news is that you can make green roof and solar a great combination! Types of green roof There are different types of green roofs, and many ways to build them up. Generally, a layered structure consisting of a root barrier, a drainage system, a substrate (soil) and plants build up the green roof. Most green roofs are so-called extensive green roofs, planted with sedum plants. Extensive means that they are optimized for large area coverage, low weight and low maintenance needs. Sedum plants are succulent plants that can hold a lot of moisture and therefore resist long periods of little rain and the strong sun and heat that rooftops are exposed to. The sedum plants typically grow 5-15 cm over the rooftop, depending on the season, the substrate thickness, climate and maintenance. Extensive green roofs are designed to be light-weight, and typically weigh 50-150 kg/m2 when soaked in rainwater. Extensive green roofs are good for combination with solar panels. The other main type of green roof is intensive green roofs, which offers thicker soil substrate and more biodiversity. The weight is high (150-800 kg/m2), and therefore put high demands on the building structure. Plants include bushes, weeds, grasses and sometimes even trees, and the typical plant height is in the range of 30-60 cm. Intensive green roofs are difficult to combine with solar panels. Read also: Why are green roofs so important? Checklist for combination roofs To combine green roofs with solar energy, you need to plan well. There are many examples of installations that don’t work very well. We here want to propose a set of design principles and guidelines for planning a good combination. Know your type of green roof: To plan a working solar installation on a green roof it is important to know the type of green roof to ensure that you select a suitable solar solution. The substrate thickness, plant height and maintenance needs are crucial to know. Plan for the right roof load: While green roofs in themselves add substantial weight to the roof, adding a solar installation may end up with doubling the roof load. For existing buildings, this is important to know in order not to compromise the safety of the building, and new buildings may need to be reinforced with respect to original plans, adding cost and consuming more concrete and other materials in the construction process. Ensure low conflict between plants and solar panels: It is important to plan for a solution where the green roof and the solar panels will not be “fighting against each other”. Solar panels may alter sunlight, evaporation and water flow on the roof, and might create unexpected negative consequences. It is important not to completely cover the green roof with solar panels. A conventional east-west solar installation may provide a lot of kWp in theory, but the fact is that plants will end up covering the solar panels to a smaller or larger degree. In general, a green roof solar installation will have less power (kWp) than a completely covering flat roof solar installation. We recommend planning with 50-70% of a the power of a conventional solar installation for flat roofs, otherwise it will be a suboptimal solution both for the green roof and the solar panels. Optimize for easy maintenance: Although extensive green roofs require very little maintenance, they need more than traditional dead materials. You must make sure that the green roof is accessible through the lifetime of the building. If planned wrong, as we will see below, the combination of green roof and solar may also generate a much higher need for maintenance than what each solution separately would have. Types of solar installations for green roofs A solar installation consists of solar panels, a mounting system, cabling and an inverter. The type of solar panels and mounting system is extremely important to make a good combination roof. There are three main ways used to build a solar installation on a green roof. Conventional solar panels and conventional flat roof mounting structures: For flat roofs without green, regular solar panels that measure about 1 by 2 m in size are mounted into a mounting system in an east-west configuration. The solar panels will cover nearly the entire roof, except for some walkpaths in between the panels for most mounting systems. While this is an efficient and well-established way to build a solar installation, it is not a good idea for combination with a green roof. Why? Because the large solar panels will cover the green roof almost completely. Below the panels there will be a humid and dark environment, which favors the growth of plants that can grow fast to reach the light above the solar panels. These plants will shade for the solar installation and generates a massive maintenance need to remove them continuously through the growth season. The large solar panels will also make the maintenance very difficult, as maintenance personnel will need to lean over the large solar panels without putting much weight on them to remove the weeds in between. This combination is therefore not recommended. Conventional solar panels with a specialized mounting structure: There are several providers of specialized structures for usage of conventional solar panels on green roofs, for example the well-established solutions from Bauder and Zinco. These solutions provide an elevated mounting of the solar panels at an angle of 15-30 degrees, with ample space between, for plants to grow and maintenance personnel to move. The elevated and sparse installation of solar panels make them highly exposed to winds and winds can generate substantial lift forces on the structure. Therefore, they need high ballast and may add up to 100 kg or more per square meter of rooftop. When planning such an installation it is crucial that the building is designed for such loads, and, for retrofitting of existing buildings with green roofs, it might not be a viable solution. The roof is relatively easily available for maintenance. However, since the tilted panels will concentrate rainwater on the lower end of the panel, there will often be accumulation of plant growth at the lower end of the panel. Good planners of such installations know this, and intentionally divide the thickness of the green roof substrate on the roof, so the lower end of the solar panel has thinner substrate, in order to avoid growth of tall plants that shade the solar panels on the lower edge. In the end, these installations are well-established in the market, but the installation may be complex, the weight might be high, and therefore it is not always a possible solution. Specialized vertical bifacial solar panels in a specialized mounting structure: To address the challenges that arise when using conventional solar panels (weight, maintenance, etc), you might consider a third way to install solar panels on green roofs. An example of this is the system offered by Over Easy Solar. Use of vertical solar panels in combination with green roofs were first tested in Switzerland in 2015, and it offers a solution that may give the best of both worlds. The vertical solar panels do not cover the green roof, so all of the plants get access to rainwater, light and evaporation. Small vertical solar panels mounted at a suitable distance over the rooftop require little or no ballast, making it a very light-weight and easy system to mount. The VPV solution from Over Easy Solar normally only adds 11 kg/m2 to the rooftop. However, you still need to know which type of green roof is under, and for intensive green roofs this is not a recommended solution since tall plants will overgrow the solar panels. In sum, you need to use a specialized system for green roofs. Over Easy Solar's solution with the VPV Unit is a good option, and there are also other alternatives that makes a high-quality and low-maintenance green roof solar installation possible.

Together with the Swiss company PlanPRO, a VPV installation was mounted in Beinwil am See, Switzerland, in January 2024. This project demonstrates how we are addressing the challenges of weight and complexity often associated with solar installations on green and flat rooftops. Streamlined Biosolar Installations with Reduced Ballast Requirements The essence of Over Easy Solar's approach lies in its ability to minimize the reliance on heavy ballasting, a common obstacle in traditional solar projects. By deploying vertical solar panels, the company has ingeniously negated wind lift and uniformly distributed transversal and horizontal forces throughout the installation. This method not only simplifies the installation process but also broadens the scope for solar energy applications on structures previously considered unsuitable due to weight constraints. "Our vertical solar panels effectively negate wind lift and, by integrating the installation as a cohesive structure, it evenly distributes transversal and horizontal forces across the installation," said Trygve Mongstad, CEO and Founder of Over Easy Solar. This technical insight emphasizes the practical and efficient nature of Over Easy Solar's system, reflecting the company's commitment to advancing solar technology. A Testimonial to Simplicity: Vertical Solar Panels for Green Roofs The project in Beinwil am See stands as a testament to the system's user-friendly design and effectiveness. PlanPro, a local company, executed the installation of a 10 kWp system atop an existing sedum rooftop with remarkable efficiency. The process showcased not only the ease of retrofitting the system on a green roof but also the satisfaction of the stakeholders involved. “We were impressed at how easy and fast this product can be retrofitted on an existing green rooftop,” remarked Sven Meuschke, Project Manager at PlanPRO in Switzerland. This statement encapsulates the project's success and Over Easy Solar's ability to deliver solutions that meet the practical demands of installation professionals and end-users alike.

Most flat roof solar installations are ballasted. It means, the solar installer will put ballast stones below the solar panels to keep the solar installation in place, and not be lifted off the roof in case of extreme winds. In most cases, Over Easy Solar’s VPV unit eliminates the need for ballast. What exactly is ballast? Ballast for a solar installation is “something heavy” that gives additional weight to the installation, to counteract for lift and push forces generated by wind. In most cases, concrete blocks or stones are used, mainly because such stones are easily available, easy to stack on a pallet, and relatively easy to handle for the installers on the rooftop. How much ballast is necessary for a flat roof solar installation? Depending on the type of installation, the building geometry, and the wind zone, the necessary amount of ballast varies a lot. The need for ballast is especially high on small installations (like a private house or garage), on tall buildings and in areas where you have strong winds. It also depends highly on which mounting system is used – south-facing solar panels elevated at a distance from the rooftop, for example, gives high wind loads and high need for ballast. In the best cases, conventional installations may need only 5-10 kg of ballast on the outer rows of panels in an installation. The worst cases may need over 100 kg of ballast for every panel in the installation. For a private house, we could be talking about several tons of ballast added to one small rooftop. For a higher and larger commercial rooftop in a windy area, we are talking about tens of tons. Why should you care about ballast for a solar installation? For the owner of the solar installation, ballast seems not to be a very big problem. It only lays there, right? But there are some important things you should keep in mind: What is the load bearing capacity of the roof? Not only is the structural strength important, but also the strength of the roofing membrane and the underlying insulation. Both can take damage from a heavy installation, especially if the weight is concentrated on a small surface area. What is the maintenance need of your roof? If you think it is likely that there will be some maintenance work on the roof in the next 30 years, which demands that you remove the solar panels, ballast may be a challenge as it complicates the work on the roof (imagine finding the ballast plan for a solar installation in 15 years from now!). For the installer, ballast is not desired because it introduces more work and logistics with the installation. A wind-exposed solar installation will therefore be more expensive, and installers may be reluctant to take on such projects. Sadly, some installers will also forget the ballast or even manipulate the calculations or the mounting system itself, sometimes resulting in accidents during strong wind events. How much ballast is needed for Over Easy Solar’s VPV unit? In 2023, we published the results of our wind certification. After thorough testing both in digital models and in a physical wind tunnel, we have now proven that our technology is ballast free for most flat roof buildings. Meaning, you can save money on ballast in your solar system and save your roof the strain of a heavy installation. As for other installations, a calculation for each project is needed. Our PV engineers will help you plan your installation step by step, customizing it to the needs of your roof.

Over Easy Solar is proud to announce it's first biosolar roof installation in Denmark. This pioneering project, located at the Mølleåværket treatment plant, about 10 km north of the city center of Copenhagen, combines vertical solar panels with a green sedum roof, a concept being introduced for the first time in Denmark. In collaboration with Lyngby-Taarbæk Utility and Nature Impact, Over Easy Solar's project is not just an installation; it's a new reference in the Danish market and an exploration of the local climate's impact on their technology. "We're thrilled to be part of this project, merging cutting-edge solar technology with eco-friendly building elements. Together with Nature Impact and Over Easy Solar, we're striving to develop a model for green energy production that can be replicated and implemented globally," says Rikke Dyre Jespersen, the project leader from Lyngby-Taarbæk Utility, in an interview with Bygtek.dk. The installation features 44 solar units of 200 Wp capacity, and is expected to generate about 8,600 kWh per year. The innovative design allows for the coexistence of solar energy generation and water retention, demonstrating Over Easy Solar's commitment to easy-to-implement sustainable solar solutions. Expressing gratitude to their pioneering Danish customers, Over Easy Solar emphasizes the significance of this venture. PV-Engineer Fabian Schroffenegger from Over Easy Solar comments on the project's potential: "We need more data to create more accurate simulations for the solar panels' output under different conditions. Hence, we're very excited to see how the system performs. Our expectations for the project are high, and the 8,600 kWh estimate is quite conservative." Read more: Full article in Bygtek.dk (in Danish).

We're proud to announce the successful completion of our largest solar installation to date - a state-of-the-art 102 kWp solar array on a green roof in Vollebekk, Oslo. This project isn't just a milestone for us; it's a prototype for cities and corporations globally who are starting to take the initiative to greenify their cities, both with green roofs and green energy! Our innovative vertical solar panels now stand on a 1700 m² rooftop in combination with sedum plants. This installation was completed in late 2023 and is expected to generate about 90,000 kWh per year. The Over Easy system is complemented by a PV facade and a convential PV system, optimizing the energy yield of the building. Thanks to our partners Solenergi FUSen, Insenti, and Aspelin Ramm, together this system could be tailored to the roof and the energy consumption of the building. Cooperation like this is integral to creating a future of innovative and sustainable urban architecture, where all measures to increase sustainability are considered. Read also the feature article in PV Magazine International.

Sustainability is not just a buzzword; it's a guiding principle for innovation, especially in the world of solar energy. At Over Easy Solar, we're proud to introduce a new concept in the PV industry – prefabricated PV units with vertical bifacial solar panels. The VPV Unit promises to enable more buildings with flat rooftops to install solar, like for example existing sedum rooftops. To further prove and enhance the sustainability, we've partnered with Fraunhofer ISE to conduct a Life Cycle Assessment (LCA), focusing on the carbon footprint of this groundbreaking idea. Product Spotlight Product Name: Over Easy Solar Vertical Photovoltaic (VPV) Unit Product Description: The Over Easy Solar VPV is a solar unit featuring vertically mounted bifacial solar panels on a structural frame. It offers easy transport, lightning-fast installation (over 10 times quicker than traditional systems), simplified logistics, and minimal rooftop assembly. Plus, it makes building maintenance a breeze and can be integrated into eco-friendly building designs, including green roofs. The Global Connection Our production reaches across the globe. While some crucial components are manufactured in China, the structural frame is crafted in Spain and then transported to the assembly facility, also in Spain. This international collaboration ensures we tap into the highest level of quality and expertise throughout our product's journey, but it also introduces challenges that we are highly aware of – such as long transportation distances and risk connected to the working conditions in the PV supply chain in China. Tommy Engvik, Co-founder and Chief Commercial Officer of Over Easy Solar, states: “Sustainability is our primary concern, and it is why we founded the company. We have our feet on the ground, we personally inspect our suppliers’ facilities, and we have clear guidelines on how our suppliers should source materials and inputs for manufacturing” Breaking Down the LCA We have done a Life Cycle Assessment in collaboration with Fraunhofer ISE, following some important principles: Functional Unit: We're evaluating the environmental impact of producing 1 kWp (kilowatt-peak) of our photovoltaic module. Data Sources: We used SimaPro 9.5.0.0 software and drew data from the Ecoinvent 3.8 database, in addition to using Fraunhofer ISE’s own collected data, following the IPCC2021 GWP100 method. System Boundary: Our study focuses on the phase from raw materials to the gate, excluding end-of-life considerations. The Climate Impact Our LCA revealed some crucial insights: Solar cell manufacturing contributes to 57% of the total carbon footprint. Within this, poly-Si, a key component, accounts for 47% of the emissions from solar cell production. PV panel manufacturing, excluding solar cells, sees 58% of its carbon footprint coming from glass. The structural frame plays a smaller role, making up 10% of the total carbon emissions. According to our calculations, the CO2 footprint from the solar energy over the lifetime of the product, will typically be in the range of 15-25 gCO2e/kWh. As a comparison, the footprint for the German power mix in 2022 was 385 gCO2e/kWh (link). What's Next? To make our Over Easy Solar VPV even more eco-friendly, we have some strategies in mind: We're exploring if we can make solar panels with specially sourced low-carbon wafers and solar cells. We're optimizing material usage to reduce waste – for example, we re-use packaging in several steps of our value chain. We're exploring local manufacturing in regions with a higher share of renewable energy sources in their electricity mix and shorter transport distances. We will soon develop an Environmental Product Declaration (EPD) for our product – the first EPD in the solar industry to entail all the materials included in a rooftop solar installation. These steps could significantly reduce our carbon footprint and further highlight the sustainability of our innovative solar solution. At Over Easy Solar, we're committed to working with the best partners and continuously improving our supply chain to create one of the most sustainable solar products available. Read more: See also our research webpage vertical.solar where we highlight more of the research from our collaborations with Fraunhofer ISE and others.

Oslo, 5 October 2023 Over Easy Solar has been selected to receive investment from Katapult. Of 2500 candidates who were assessed for the accelerator program, the top 1% of the startups have been selected. In total, the recruitment round screened startups from 6 continents and around 62 countries, and the selected 23 companies represent 13 different countries and span 5 continents. These 23 startups will take part in the Katapult 2023 accelerator program: an accelerator program specifically designed for high impact Ocean- and Climate-tech companies. This award-winning program is Katapult’s flagship accelerator program and has received international praise for being the most comprehensive impact program in the world. Over the next three months, Over Easy Solar will strengthen their skills in impact, strategy, management and investor readiness through a combination of video modules and hands-on workshops. Over Easy Solar will also benefit from entering a network of international mentors, industry players and investors. Jørn Haanæs, Investment Director of Climate says: “We’re investing in the most impressive teams building scalable solutions to combat climate change, and out of the thousands seed-stage companies we looked at this year, we’re proud to say that Over Easy Solar was among the top, and we’re excited to follow their journey over the coming decade." As much as legacy photovoltaic panels can contribute to distributed clean energy production, a considerable amount of buildings are technically limited to adopting it, or owners are still concerned about the challenges and risks of owning and maintaining such systems. Over Easy Solar identified this problem and has developed vertical bifacial solar panels, specifically designed for flat rooftops. Trygve Mongstad, CEO of Over Easy Solar is delighted to have the support of the Katapult community: "With the support from Katapult we can accelerate our journey to make solar energy possible for more buildings, and cities can take advantage of more resilient buildings and energy grids.” About Katapult Katapult VC is a global investment company focusing on early stage impact driven technology startups. Katapult has made 169 investments in impact tech startups from 47 different countries. Katapult invests within three investment verticals: Ocean-, Climate- and Food-tech. Katapult has run ten flagship accelerator programs and three corporate accelerator programs. In 2021, Katapult launched the Katapult Foundation with the aim of building a larger network around impact investing. Katapult also hosts the annual Katapult Future Fest in Oslo, bringing together founders, investors and some of the most prominent figures within impact investment.

Over Easy Solar Launches Research Website to Accelerate the Energy Transition Oslo, 24 August 2023 – Over Easy Solar, a pioneering startup at the forefront of solar technology advancement, is thrilled to introduce its new website dedicated to the exploration of vertical bifacial solar installations. The website, accessible at https://vertical.solar/, serves as a platform to share research findings, insights, and projects aimed at driving the energy transition through innovative solar solutions. As a company committed to the development of groundbreaking technologies and pioneering research, Over Easy Solar recognizes the significance of efficient knowledge dissemination. The newly launched website offers a wealth of information, including: 🔆 Energy Yield from Vertical Bifacial Solar Panels: Delve into the enhanced energy capture potential of vertical bifacial solar panels and their impact on energy generation. 💨 Wind Loads for Vertical Solar Panels: Gain insights into the aerodynamic performance of vertical solar installations, ensuring structural stability and reliability. 🌱 Quality and Sustainability: Explore the commitment of Over Easy Solar to delivering top-tier quality and sustainability in every facet of their vertical solar solutions. 🏞️ Green Roofs with Vertical Bifacial Solar Panels: Discover the seamless integration of vertical solar panels with green roof systems, exemplifying the company's dedication to harmonious urban landscapes. Over Easy Solar's CEO, Dr. Trygve Mongstad, emphasized the significance of this initiative: "With the launch of vertical.solar, we are taking a stride towards democratizing knowledge in the renewable energy sector. By sharing our research outcomes and experiences, we aim to empower industry professionals, researchers, and enthusiasts to contribute to the global energy transition." Visitors to the website are encouraged to actively engage with Over Easy Solar and reaching out with thoughts and questions. For more information and to explore vertical bifacial solar installations, visit https://vertical.solar/.

This summer I worked as an intern at Over Easy Solar. My task was to inspect roofs in Oslo to check out the state of some of Oslo municipality's biosolar roofs, in other words green roofs with solar panels☀️🌿 Did you know that green roofs: 🌱 Reduce a Buildings Energy Usage? Green roofs have insulating abilities that help keep the inside temperature cool in the summer and store the heat inside the building in the winter. Saving energy has been one of the main motivations behind the green roofs I’ve visited this summer! 🌱 Are Great for Storm Water Retention? In urban areas, flooding and strained drainage systems have become increasingly evident with the increase in unpredictable extreme weather, also here in Oslo! Green roofs are able to hold on to rain water and release it slowly, delaying parts of the water entering the city drainage systems. This way, the green roofs help reduce the risk of flooding and avoid the need for upgraded drainage systems. 🌱 Help the Local Biodiversity? The second picture included in this post is from Storbylegevakten in Oslo, and while you might not see it in the picture, the roof was buzzing with bumblebees all over the sedum! Utilizing green roofs, especially in urban areas, increases the available area for bees and other pollinating insects to thrive. With the declining insect population in the world, giving green oases to our pollinators living in cities is extremely important. 🌱 Reduce the Temperature of the Surroundings? The vegetation on green roofs is able to reduce the temperature surrounding the roofs by several degrees! This effect is why green roofs can be crucial in mitigating what is called the “Urban heat island effect”, meaning the increased temperature in urban areas caused by lack of vegetation and waste heat, among other contributors. This is also positive for combination roofs, one of the main focuses of us in Over Easy Solar, as the green roof cools the PV panels and keeps the efficiency high! 🌱 Bind both CO2 and Air Pollution? The plants growing on the green roofs not only have the ability to bind CO2, our most abundant greenhouse gas, but also airborne particles clouding our urban air. Green roofs therefore help clean the atmosphere and the air we breathe every day! Included are some pictures from thriving green roofs I’ve visited during the summer. I hope you found this as fascinating as me, and that this can help spread awareness of the importance of green roofs in future urban planning, as we work together towards a more sustainable future☀️🌿

For immediate release Oslo, June 26, 2023 – Over Easy Solar, a Norwegian solar startup, proudly announces the official opening of its first full-scale vertical biosolar rooftop installation on a rooftop in Oslo. This groundbreaking project, featuring the innovative VPV (Vertical Photovoltaic) unit, marks a significant milestone in the commercialization of vertical solar panels for green rooftops. Following a successful pilot project on the same roof in 2022, Over Easy Solar has made progress in product development and manufacturing, enabling the efficient installation and a tenfold increase in the size of the installation. Leveraging the unique advantages of the prefabricated vertical PV system, the entire mechanical installation was seamlessly completed within a single day, without the need for ballast or fastening. The collaboration and support from key stakeholders have been crucial to the realization of this extraordinary achievement. Over Easy Solar extends gratitude to Oslobygg KF and SMART Oslo for their commitment and support including pilot financing from SMART Oslo. Additionally, Over Easy Solar would like to thank Solenergi FUSen for their exceptional project management, which ensured the flawless execution of the installation. The VPV unit's integration of vertical solar panels and green rooftops represents a pioneering approach to harnessing renewable energy and promoting sustainable living. The full-scale installation has a peak power of 45kWp and should generate up to 50 000 kWh per year, calculating based on measurements from the pilot installation from last year. The installation is ballast-free and covers a total area of about 600 square meters. "We are thrilled to unveil this groundbreaking vertical biosolar rooftop installation" says Trygve Mongstad, CEO of Over Easy Solar. "This project represents a significant step forward in our mission to enable a greener, more sustainable future for urban rooftops. Our customers acknowledge that the benefits of our vertical solution for biosolar green rooftops are unmatched by any other product, and we look forward to delivering solar energy solutions to new and existing buildings in the coming years." To learn more about Over Easy Solar and its product, please visit our website and contact Trygve Mongstad or Tommy Engvik (Contact information below). About Over Easy Solar Over Easy Solar is a Oslo-based startup founded in 2021, dedicated to revolutionizing the integration of solar energy into the built environment. Through its innovative VPV unit, the company combines vertical solar panels and green rooftops to maximize energy generation and environmental benefits. Over Easy Solar is committed to driving the adoption of renewable energy sources, reducing carbon emissions, and creating a sustainable future for generations to come. For media inquiries, please contact: Trygve Mongstad Over Easy Solar +47 99228200 trygve@overeasy.no For customer or product inquiries, please contact: Tommy Engvik Over Easy Solar +47 900 44 266 info@overeasy.no Website: www.overeasy.no

For immediate release Innovative Solution Approved by Leading Wind Certification Institute and Complies with European Regulations OSLO, 29 May 2023 – Over Easy Solar, a Norwegian startup developing solutions for flat and green rooftop solar, is proud to announce the wind certification and approval of their revolutionary ballast-free vertical bifacial PV system for flat rooftops. This cutting-edge solution has been extensively tested and approved for rooftop mounting according to European regulations, providing a game-changing alternative for energy engineers and installers. The news was made public in an article in PV Magazine Global today. Through an in-depth study conducted at I.F.I. Institut für Industrieaerodynamik GmbH in Aachen, Germany, the Over Easy Solar system has proven its reliability and efficiency, enabling secure installation on almost all flat roof buildings without the need for fastening or additional ballast. This innovative approach relies on friction to hold the panels in place, streamlining installation processes and minimizing costs. Key Features of Over Easy Solar’s Ballast-Free Vertical Bifacial PV System: Prefabricated unit: Over Easy Solar has developed a prefabricated unit featuring low-building vertical bifacial solar panels, specially designed for flat rooftop installations. Dimensions: The solar panels measure 22 cm in height, and with the integrated support structure, they stand at 27-34 cm above the rooftop. High bifaciality: Manufactured with Heterojunction (HJT) cells, the panels boast a remarkable bifaciality of over 95%, ensuring exceptional energy capture from both sides. Superior performance: Over Easy Solar’s pilot projects have demonstrated that vertical solar panels can achieve up to 20-30% higher specific yield than traditional flat roof solutions, maximizing energy generation. Lightweight: With a weight of 11 kg/m2 on the rooftop without the need for ballast, the units offer a lightweight and streamlined installation process. Versatile application: The system is compatible with all flat roofs and delivers optimal performance when combined with a green roof or high-albedo roofing membrane. Enhanced Energy Yield: The system generates the highest energy yield during morning, evening, and winter periods, enabling increased self-consumption and improved price recovery in variable-price markets. Dr. Trygve Mongstad, Founder and CEO of Over Easy Solar, expressed his enthusiasm about the groundbreaking product, stating: “With this unique product, we see that we solve many of the challenges for installers. The simplicity and ease of installation of a ballast-free and prefabricated setup will greatly accelerate flat-roof solar installations.” The wind tunnel tests, conducted on a 1:50 model equipped with 360 pressure taps at the esteemed I.F.I. Aachen wind laboratory, yielded remarkable results. Daniel Markus, representative of I.F.I. Institut für Industrieaerodynamik GmbH, remarked: “The aerodynamic performance of Over Easy’s system in our wind tunnel experiments was above our expectations, and the analysis indeed shows that these systems can be ballast-free for many typical flat-roof buildings, depending on the local wind conditions.” Furthermore, CFD simulations performed by Fraunhofer ISE demonstrated that the Over Easy Solar system exhibited negligible lift, even at wind speeds of up to 47 m/s. Lena Emmer, representative of Fraunhofer ISE, highlighted the findings, stating: “Our CFD simulations show negligible lift on the system, and the wind forces are mainly on the first panel of a row, while the other panels may have wind forces even acting against the main direction of the wind.” Over Easy Solar, a recipient of the prestigious SolarPower Europe Startup Award 2022 and the national Solar Award in Norway 2023, continues to revolutionize the solar industry with their groundbreaking technologies. For further information and media inquiries, please contact: Trygve Mongstad CEO, Over Easy Solar Email: trygve@overeasy.no Phone: +47 99228200

With more and more cities around the world changing the building code and regulation to better adapt to the climate conditions, the cities must combine green roofs systems for retaining water and energy production to conform to the new standards. Previously, it was not possible to fully utilize the roof area for both green roofs and solar. Standard solutions either install the green roof and the PV system in separate areas or install conventional solar panels over the green roof, shadowing the vegetation and hindering growth. Using the Over Easy Solar unit, you can now combine 100 % of your green roof with a solar energy system! The lightweight PV-Units from Over Easy Solar can easily be put on top of your sedum roof without limiting or changing the function of the green roof itself. Both the green roof and the solar panels get plenty of sunlight, with no conflict of area. The Over Easy systems also allows for easy access to inspect, maintain and if needed repair the roof.