Other features include installing low-flush wet rooms that reduce water consumption, fridges that are more energy-efficient and shifting to LED lighting, which can be switched on and off from a central surveillance center. The building is heated and cooled using a mechanical ventilation system, which recycles energy in the air. According to Vasce, this system has reduced the energy used for heating by 50-60%. In addition all food waste from the prison kitchen is converted into biogas, 12% of the food offered is organic and at least two meals per week are vegetarian, according to Patrik Snellman, formerly assistant governor of Sollentuna.
