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Useful Questions
What is a inverter?
The inverter (can see it referred to as inverter or converter) is a device that converts DC current of the PV system into alternating AC 220V power, so it can be channeled to the grid.
SOLAR ROOFS - Will I sell all of the electricity I produce or only the excess of it?
Producing and consuming electrical energy are two separate things. You will continue paying for the energy you consume at the price 0,12 €/kWh. But you will be selling the total amount of the energy...