How much does a home battery cost in Florida?

EnergySage's October 2026 Florida pages put installed battery prices at about $852 per kWh in Walton County, $889 in Ocala and $963 in Miami Beach. Nationally, EnergySage puts a Tesla Powerwall 3 at about $13,473 installed.

Motor-start ratings matter in Florida, because starting a central AC compressor is the biggest surge most homes ask of a battery. See the best home batteries for Florida for heat ratings, storm modes and warranties.

• No state or utility rebate. FPL, Duke Energy Florida and Tampa Electric don't offer a home battery rebate in 2026.
• Sales tax exemption. Storage units installed as part of a solar energy system are exempt from Florida's 6% sales tax. A standalone battery with no solar isn't clearly covered.
• Property tax. Florida's property tax exclusion for solar covers power conditioning and storage devices, so a battery installed with solar shouldn't raise your assessment.
• Federal credit. The 30% homeowner credit ended for systems completed after 2025. Leased batteries are different: the leasing company can still claim a business credit for batteries that start construction through 2033 (it phases down after that), and may pass some of it on.

For the small credits utilities do pay for load control, see FPL, Duke and TECO programs that pay you.

• Tesla Powerwall 3: Tesla's U.S. warranty runs 10 years and promises at least 70% of original capacity at year 10, with unlimited cycles when the battery is used for solar self-consumption and backup.
• FranklinWH aPower 2: 15 years or 60 MWh of energy throughput, whichever comes first, while keeping at least 70% of its capacity.
• Enphase IQ Battery 5P: a 15-year limited warranty of up to 6,000 cycles, according to Solar Power World's coverage of its launch.

A Powerwall 3 at 70% would still hold about 9.5 kWh of its original 13.5 kWh. A Florida battery that mostly waits for outages cycles far less than one used every day, so compare the warranty years as closely as the throughput limit.

It depends on how the battery is set up, according to FPL's net metering guidelines:

• Backup-only battery with no solar: a battery that charges from the grid and only serves as emergency backup needs no interconnection agreement, but you're responsible for making sure it never sends power back to the grid.
• Grid-connected battery with no solar: you must notify FPL by submitting a Small Generator Interconnection Application.
• Battery with solar: FPL reviews the battery during the solar application. Battery energy is for your own use and can't be exported, and a placard on the meter enclosure must say battery storage is used at the home.

The battery must be certified to UL 1741, or connected on the DC side behind a UL 1741 listed device. Duke Energy Florida and Tampa Electric have their own interconnection steps, and your installer usually handles the paperwork. See adding a battery to existing solar.

• More storage. Each added battery raises the total; see the table above.
• Electrical work. An older or smaller electrical panel may need an upgrade or a separate backup panel; ask each installer whether the price includes it.
• Permits and paperwork. NREL's 2024 cost model puts permitting, inspection and interconnection at about $1,633 for a home battery system, in 2022 dollars, including a $286 permit fee.
• Placement. Florida's building code limits where batteries can go and how much storage fits in one spot, which can mean longer wiring runs. See whole-home battery backup.

Ask for quotes that list the battery, the backup switch or gateway, electrical upgrades and permit fees separately, so you can compare them line by line.

Not on your electric bill. FPL, Duke Energy Florida and Tampa Electric credit exported solar at the full retail rate, so storing it instead saves little. FPL does offer an optional time-of-use rate, but it requires a one-year commitment. A Florida battery's value is the backup it gives you through storm season. See solar battery backup for hurricanes.