![]() The ability to add a battery backup system depends on whether your solar panel system was designed to accommodate adding energy storage.Ī "storage-ready" system has an inverter that can integrate a battery into your solar system setup. When the sun goes down, the battery powers your home.Ĭan You Add a Backup Battery to an Existing Solar System?.Excess solar power is stored in the battery, instead of the grid.When the sun’s up, the solar system charges the battery.In addition, off-grid systems make you 100% responsible for your power needs, requiring batteries and a generator to provide backup power in emergencies (and at night!). Off-grid systems cost more than grid-tied systems but may be necessary for remote locations. While this may sound desirable to some people, it’s not without its drawbacks. ![]() Off-grid systems are entirely independent of the grid. Peak times are usually after sundown, but your utility’s rate structure may differ. Even when the grid is working there are benefits: a solar battery can offset your energy costs when electricity rates are at their highest. But when the grid goes down, your system's battery bank kicks in to provide power for your home. Like a grid-tie system without battery backup, your grid-tie battery backup system will still reduce your electric bill and allow your home to run on clean solar power. These vulnerabilities are solved by a grid-tie system with battery backup, also known as an energy storage system. When you’re connected to the grid, your electricity is disabled as a safety measure when the grid power fails - even if you have solar panels. However, basic grid-tie systems are vulnerable to power outages caused by natural disasters, storms, and equipment failures. Most people with access to power lines choose grid-tie systems for their dependability. Your solar panels feed electricity into the grid, and the utility credits your account for the power your panels generate. For example, if you've been paying an electric bill and then add solar panels to your home or business, you have a grid-tie system. Grid-tie systems connect you to the public utility grid - the entity you pay your electric bills to. ![]()
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