- The micro-plastic-free hand soaps NO. 146 in long-distance trains are alternatives to decrease the wastewater burden with the smallest synthetic particles.
- In March 2019, a photovoltaic system with an electrical maximum performance of 360 kW was put into operation at the cologne-nippes depot NO. 48 on a roof surface of 2,100 m². In the future, about 360 MWh of solar energy will be produced per year to cover the base load.