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Will a solar system run my house in the event of a power outage?
Will a solar system run my house in the event of a power outage?

Short answer: get a battery🔋

Jason Badeaux avatar
Written by Jason Badeaux
Updated over a week ago

A standalone solar system, also known as a grid-tied solar system, is designed to supply power to your home and to feed excess electricity back into the electric grid. During the day, your solar panels generate electricity which powers your home. If they produce more power than you use, that extra energy is sent back to the grid.

However, for safety reasons, these grid-tied systems are designed to automatically shut down in the event of a power outage. This feature, known as "anti-islanding," is important to protect utility workers who might be fixing power lines during an outage. If your solar system continued to feed electricity into the grid, it could potentially cause harm to those workers.

So, during a power outage, even if it's a sunny day and your solar panels are generating electricity, a grid-tied system will shut off and your home will be without power.

The good news is that there's a way around this: adding a backup battery to your solar system🔋

With a battery, when a power outage occurs, your solar system would disconnect from the grid (keeping utility workers safe), but instead of shutting down completely, it would continue to power your home by feeding stored electricity from the battery.

Not only does this give you electricity during an outage, but it also allows you to use your solar power after the sun goes down. By storing excess power in your battery during the day, you can use that stored power in the evening or at night, further reducing your reliance on the grid.

So, while a standalone solar system won't keep your home powered during an outage, adding a battery backup allows you to use solar power day and night, and keeps your lights on when the power goes out. You can easily add a battery to your solar system with Daylight.

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