Chargers for batteries; Electric accumulators; Electric connections; Electric wires and cables; Electrical controllers; Electrical plugs; Frequency converters; Photovoltaic cells; Photovoltaic installation apparatus, namely, solar modules for production of electricity, solar thermal and electric receivers, tracking mechanisms and concentrating optics, and control algorithms; Photovoltaic inverters; Power distributing boxes; Video monitors; Wire connectors; Wireless chargers