Thanks to this ballast principle, roof membrane penetrations that would normally be necessary for anchoring standard solar energy systems are not required. The combined weight of the growing media and plants provides the ballast required by the solar energy system to deal with wind loads. The panels are covered with a prescribed amount of growing medium and the desired vegetation is then planted. The ZinCo solar build-up consists of a protection and drainage layer, Solar Base panels and Solar Base Frames. Through the cooling effect caused by evaporation at plant level, the ambient air temperature is cooler and photovoltaic cells improve their performance.īallast provided by the green roof build-up: One important synergy effect shows at the construction stage. However, if combined with a green roof, solar modules will perform better. This is impaired by a hot roof surface such as a bare waterproofing membrane or a gravel roof. In fact, modules heat up considerably as a result of solar radiation. A typical four-bedroom integrated solar roof will generate up to 6,000kWh a year of electricity, with the potential to save significantly on electricity over. The rule of thumb is: “the warmer the module, the lesser the performance”. The height of the Solar Base Frames creates enough distance between the substrate layer and the solar panels, providing the plants with enough sunlight and rainwater and enabling appropriate maintenance.Įnhanced performance of photovoltaic modules: The performance of photovoltaic modules depends on the temperature of the modules and the surrounding ambient air temperature. With its Solar Base, ZinCo incorporates solar energy into green roofs and creates synergies, whether it is for generating electricity (photovoltaic) or for heating and hot water applications (solar thermal). On the contrary with the right system, significant synergy effects are achieved when combining both. It is a mistaken belief that one has to decide between a green roof and a solar system. Green Roofs and Solar Energy: Pure SynergyĪ flat roof is one of the best locations for a solar energy system, given that the solar modules can be adjusted to the correct angle and the most appropriate orientation.
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