How It Works
How a Residential Solar System Works
1. Solar Array:
Consists of a combination of solar panels, which in turn is a combination of solar cells made up of silicon semi conductor. Photons from Sunlight strike the solar cells and create a charge separation in the Silicon semi-conductors. When connected to an external circuit this allows for the charges to flow freely (called electric current) from one end to the other.
Converts DC (direct current) to AC (alternating current). Electricity produced through the conversion of sunlight to electrical energy by solar cells is Direct Current (DC). This has to be converted into Alternating current (AC) to be able to be utilized by appliances consuming electrical energy to operate.
3. Distribution Panel:
Divides the main electrical power feed into smaller circuits and provides protection of these circuits.
4. Bi-Directional Meter:
This accounts for the flow of energy from and to the grid for billing purposes.
Electrical Energy produced by solar system > Electrical Energy consumed by household = Electrical energy exported to the grid (usually occurs around mid day when solar energy production peaks and household consumption is minimal).
Electrical Energy produced by solar system < Electrical Energy consumed by household = Electrical energy imported from the grid (usually occurs in mornings and/or evening and night when solar energy production is minimal and household consumption is maximum).
Your utility or service provider.