Thermeleon

Founded in 2020, Thermeleon is a limited company headquartered in Rotterdam, Netherlands with approximately 1-10 employees specializing in Energy Storage.

Thermeleon is a Dutch company founded in 2020 that develops and produces a passive thermal battery for high-tech greenhouses. The Heat Battery uses phase-change materials placed inside the greenhouse: during the day it absorbs surplus greenhouse heat, cooling the crop area, and at night it releases that heat, providing heating. The system requires no pumps, electricity or maintenance, and is designed and scaled to each greenhouse. The company claims 15 to 30 percent energy savings for growers, aiming to reduce fossil fuel dependence in Dutch greenhouse horticulture and support climate-neutral greenhouse farming by 2040. Thermeleon operates from its base in the Van Nellefabriek in Rotterdam and has its own production facility in Zuid-Holland. It was founded by Jildou de Jong, a technical physicist from TU Delft, and works with research institutions and sector partners.