(Double click image for clearer picture)
The system uses the sun to provide electricity to the household local loads.
When there is an excess energy not used by the local loads, these excess energy will be exported to the main utility grid, operation in GENERATION and EXPORT mode (Local demand < PV Generation).
When local demand loads are greater than what the system produce, the system will draw these energy from the grid, operation both IMPORT and GENERATION mode (Local demand > PV Generation).
At night when of course the sun is not present, the system is on 100% IMPORT mode operation.
This system is the most economical set-up since this does not require batteries for energy storage, the grid is your storage. The excess energy exported can be re-imported during night time.
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