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In Holtzwihr, Haut-Rhin, a micromethanization unit has been installed at a vegetable farm, marking a first in Alsace. It converts vegetable waste and brewery byproducts into biogas for heating and electricity.

The unit operates at less than 80 kW, tailored for small-scale farms, and is designed by the Strasbourg startup Arkeale. The farm aims for 40% electricity autonomy and 100% hot water autonomy. The investment is around €400,000, with a return on investment expected in 6 to 10 years. By 2027, Arkeale plans to install three additional units in Bas-Rhin and Luxembourg.