According to NS Reizigers these new coaches will form the most energy efficient train sets of the company, with energy consumed per seat-km reduced by 33% compared to the present average for the fleet. This is owed to improvements such as weight reduction, lower air resistance and modern traction installations limiting start-up currents as well as feeding back braking energy. According to calculations made at NS, the introduction of the new Regiorunners coaches will improve overall energy efficiency of train operation at NS Reizigers by about 6,5 %.