It is always a consideration whether the further use of an older device does not require less energy or water than the production of a new, energy-efficient device. Therefore, the energy requirement along the entire product life cycle (from production to use to disposal) must be considered. Companies need the competence to weigh up the right time for a new purchase of devices, but also the determination to then purchase the most sustainable and not only cheapest devices.

LED 'light bulbs' are now available for really all lamps, even with pleasantly warm light colors. Also, think about the lights outside - are they LED as well?

Modern lamps require little electricity, but all in all it is worthwhile not to let them burn unnecessarily, for example when we are not in the room for a long time. Corridors, toilet rooms, basements often have the lights on unnecessarily. In some areas, schools also have the lights on too long or too early.