graze

For years, the industry has assumed that each new problem required an increasingly sophisticated solution. Volkswagen just demonstrated which is not always like that. After deploying thousands of solar panels to power one of its factories, it has discovered that the best possible maintenance is not done by a robot or a specialized machine, but by a flock of sheep. The problem was not the plates, but what was underneath. Photovoltaic parks share a challenge that is as simple as it is constant: vegetation doesn’t stop growing. In industrial facilities with tens of thousands of panels, keeping the ground clear involves introducing machinery between metal supports, wiring and electrical equipment, with the consequent economic, energy and maintenance costs. In the Volkswagen plant in Poznań, Poland, where a solar park of 31,000 panels can cover the entire energy demand of the factory during the days of greatest radiation and provides about 25% of its annual consumption, that challenge had become part of daily operations. An ancient solution. Instead of looking for a more efficient machine, Volkswagen turned to a much older technology: a hundred sheep. The animals replace lawnmowers, eliminating the need for mechanical clearing as they calmly cover the terrain under the plates. The curious thing is that the solution is not only effective in maintaining the grass at baybut it avoids the constant passage of vehicles between the infrastructure, reduces emissions and simplifies the maintenance of a state-of-the-art energy installation. The plus that sheep give. The project is part of a known model like agrivoltaicswhich seeks to combine electricity production with agricultural activity on the same surface. Under the supervision of researchers from the Poznań University of Sciences, the flock has been turned into a real open-air laboratory. The scientists analyze how it influences grazing on biodiversity, soil quality, vegetation, microclimate and animal well-being, while studying the extent to which the shade projected by the panels reduces the thermal stress of livestock during the hottest months. Nature also optimizes. The first results show an adaptation surprisingly fast. The sheep have been distributed naturally throughout the facility, forming small groups that take advantage of the shaded areas generated by the solar panels. This behavior, in addition to indicating that the animals feel safe, helps maintain a uniform plant coverage and encourages the appearance of insects and other species, transforming a simple photovoltaic plant into a much richer ecosystem than conventionally mowed land. Agrivoltaics is no longer rare. Although the case of Volkswagen is especially striking because it is a large industrial facility, the use of sheep in solar parks takes vyears extending in countries like the United Kingdom and the United States. The idea it’s simple: obtain two different yields from the same plot. While the plates generate electricity, the agricultural or livestock activity keeps the land productive, reduces operating costs and improves the environmental performance of the facility without competing for the use of the land. Innovation is not always more technology. The paradox of the project is evident. A factory that is committed to electrification, solar energy and decarbonization has ended up finding one of its most effective solutions in a livestock practice with thousands of years of history. At a time when innovation is often associated with artificial intelligence, automation or robotics, Volkswagen has discovered that, sometimes, the greatest advance consists of simply letting innovation. nature do a job that no machine can do with the same efficiency. Image | Rafal Pijanski In Xataka | Australia compared 1,700 sheep and discovered something unexpected: those that graze among solar panels give better quality wool In Xataka | Texas installed millions of solar panels on rural land. To maintain it they have had to hire 3,000 sheep