On Wednesday 29/09, GPC got a nice 2nd place with the GPContol at the Innovation Award at the SolarSolutions Int. in Haarlemmermeer. In short, it helps you heat your boiler when the solar panels are producing energy.
The GPControl measures, via the P1 port on the digital meter, the energy injected into or taken from the grid. If there is a surplus of solar energy, an electric boiler is fed, controlled by the GPControl.