Photovoltaic systems

The power supply company offsets the current produced by photovoltaics with the electricity consumed by the owner of the photovoltaic on an annual basis, transferring any excess energy in next year's account. The energy consumpted and producted are liquidated every three years. By choosing a system that produces in a year how much energy we consume annually, we reduce dramatically the electricity bill. Usually we install systems whose annual output is at a small percentage greater than the annual electricity consumption of the home or business, receiving future load additions.