The Netherlands launched a floating solar farm in 2020. Six years later, it has become home to nearly 2,000 invertebrates.

The transition to renewable energy is usually discussed in terms of cutting emissions, but some projects are also producing unexpected benefits for nature. One of the latest examples comes from a floating solar farm installed on a lake in the Netherlands in 2020, where researchers have confirmed that the facility has become more than just a source of clean electricity. It has also turned into a refuge for 431 fish and 1,951 invertebrates.

Among the species identified by researchers were mussels, freshwater sponges, and a variety of small organisms that form the foundation of the aquatic food chain. Scientists also observed juvenile fish using the sheltered areas beneath the panels as nursery habitat, suggesting that the ecosystem developing under the solar farm is functioning as a natural breeding and growth area.

Good news for biodiversity in the Netherlands

The study found that biodiversity continued to increase as the “biohuts” matured. The growing presence of microorganisms and invertebrates provided food for larger species, helping to create an increasingly complex ecosystem. In addition, previous research on the same floating solar installation concluded that it did not cause any significant changes to water quality during the period studied.

Even so, scientists caution that these findings do not mean every floating solar farm will automatically benefit biodiversity. The impact will depend on factors such as water depth, the species present at each site, and the amount of surface area covered by the panels. For that reason, researchers say it is essential to incorporate ecological measures from the earliest stages of designing these facilities and to continue monitoring them over the long term to better understand their effects on aquatic ecosystems.

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