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During a Florida hurricane outage, a properly designed solar battery backup system separates the backed-up home circuits from the utility grid and then supplies those circuits from stored energy. If compatible solar remains operational, the panels can serve household loads and recharge the battery during daylight. At night, the home depends mainly on the energy that remains in storage. That sequence sounds simple, but reliable backup depends on the system controller, battery

A Tesla Powerwall does not have one fixed outage runtime for every St. Lucie County home. Runtime depends on the battery's starting charge, the average household load, whether air conditioning or other large appliances are included, and how much solar energy is available to recharge the battery while FPL or another local utility is down. Tesla currently lists Powerwall 3 with 13.5 kWh of nominal battery energy and 11.5 kW of continuous backup power in its U.S. specifications.

A solar battery can be worth it in Palm Beach County when the main goal is keeping important parts of the home powered during an outage. The value depends on what you want to run, how much energy those loads use, how long an outage lasts, and whether your solar array can recharge the battery while the grid is down. For homeowners in Jupiter, Palm Beach Gardens, West Palm Beach, Wellington, Boca Raton, Delray Beach, and surrounding communities, hurricane preparation is usually