Recorded computer programs, for managing the use of electricity in connection with energy systems; Data processing apparatus; Downloadable computer application software for managing the use of electricity in connection with energy systems; Downloadable mobile phone application software for managing the use of electricity in connection with energy systems; Thread counter; Materials for electricity mains, namely, electric wire and cables; Inverters for electricity power supply; Electricity transformers; Electrical distribution boxes; Photovoltaic inverter; Mobile power supply in the nature of rechargeable batteries; Battery charging device; Battery charging devices for motor vehicles; Batteries, electric; Accumulators, electric; Solar batteries; Photovoltaic cells; Solar panels for the production of electricity