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Subject How does a Residential Solar Electric System work?
Author Sascha Deri
How does a Residential Solar Electric System work?
Solar cells in the modules mounted on your roof convert sunlight directly into DC power. This DC power is converted by a component called an inverter to AC power that can be used in your home. The system is interconnected with your utility.
During the day, when your solar system may produce more electricity than your home is using, your utility meter will spin backwards, crediting your utility account for any extra electricity that your system produces. This is called net metering. The utility will provide power as usual at night, or during the day when your electricity demand exceeds what the solar system can produce.

Systems are also available with a battery backup. Part of the power produced by the solar system during the day will go towards charging the batteries, and they will be ready to provide power for your critical loads in the event of a power outage.
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