The Logosmeter have solar meters. Their technical performances completely conform to International Standards IEC 62053-21 for Class 1 single phase and three phase active energy meter.
They can directly and accurately measure the load active energy consumption in the single phase/three phase AC networks of rated frequency 50Hz or 60Hz. They have the function of bidirectional electric energy metering. They can be used in wind or solar photovoltaic power generation systems, which combined to public electric grid.