The piezoelectric phenomenon was first described by the Curie brothers, who observed that certain materials generate electric current when they are deformed.
In general, piezoelectric materials undergo deformation (strain) when an electric field is applied across them (the converse effect), or produce voltage when deformation is applied (the direct effect), and thus can be used as either actuators or sensors.
Innowattech has developed a new breed of piezoelectric generators, using the converse effect, with a mechanical/electrical association that are ideally suited to harvest the mechanical energy imparted to roadways from passing vehicles. In addition Innowattech has developed a very efficient storage system to collect and store the electricity produced by these generators. The accumulated energy can be used for local power needs or routed into the grid.