PROMESS collects rainwater for flushing toilets in two of three buildings. A photovoltaic system produces around 100,000 kWh of electricity per year, and a green roof also cools the building in summer. Employees from various departments have come together to form climate scouts and work out measures for resource-saving production through to the desired climate neutrality. In order to offset the previously unavoidable greenhouse gas emissions, PROMESS donated 70,000 euros for regional climate protection projects and the non-governmental organization Ackercrowd.