Seed · Energy · Rotterdam, Netherlands · Founded 2022 · 11–50 employees
Thermeleon is a Dutch environmental tech startup developing a passive **heat battery** system for high-tech greenhouses that stores excess daytime heat and releases it at night — reducing energy use for both heating and cooling by ~15–30 % without external energy input, lowering fossil fuel dependency and CO₂ emissions while stabilising greenhouse climate and reducing crop stress; its Phase Change Material (PCM)-based system has been piloted in commercial greenhouses, supports climate-neutral cultivation and is customised to growers’ operations.
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