![]() ![]() PowerNest works to remove the turbulence around a building by capturing the wind, then bending it inward, accelerating it and guiding it through the wind turbine. The wings look very simple, but there is a lot of intelligence behind that shape.” It looks like a simple box from the outside, but its success lies in its use of aerodynamic shaping, he said. The unit has internal wind turbines and solar panels on the top. On a small footprint, they have the highest demand,” Suma said in a recent interview with Microgrid Knowledge.ĭesigned for flat roofs, PowerNest requires that the building be at least five stories, a height where the best winds begin. “The goal is to generate as much energy as possible on the limited roof space because big buildings, high buildings, they are basically the biggest energy users inside a city grid. His company has devised a system called PowerNest - a modular unit that combines solar, wind and energy management in an architecture that Suma said overcomes the turbulence problem and maximizes renewable energy production. Turbulence around the rooftop makes energy production inefficient. Rooftop wind turbines placed on buildings are inefficient because they are in “the shadow of the winds,” said Alexander Suma, founder and CEO of IBIS Power, a renewable energy company in the Netherlands. Solar panels are the more common sight.Ĭities can be plenty windy. ![]() ![]() But smaller rooftop wind turbines, befitting a city skyline, are rare. Large wind turbines can be found in microgrids built on islands or in remote blustery locales. Wind turbines, on the other hand, are more of a rarity. Solar panels and batteries are common elements of a microgrid. ![]()
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