Energy harvesting involves the generation of energy from ambient energy sources, from air currents, ambient temperatures, sunlight, vibrations, pressure or other physical variables, converted into energy. Therefore, this energy harvesting is also called ambient energy harvesting.
Well-known examples of energy harvesting are photovoltaic systems
and wind turbines.But there are also already sidewalks that convert the pressure changes of pedestrians into lighting energy, or energy converters that convert the enormous waste heat of data centers into electrical energy. For small and tiny energy conversions, such as those that occur when a button is pressed or a hand is moved, we speak of Micro Energy Harvesting (MEH). This is a technology that is also used in battery-free wireless technology