Solar over 10 kW in Florida: Tier 2 rules for big homes

AC. Florida's net metering rule defines a system's size as its AC rating, and for this purpose counts it as 85% of the panels' total DC rating. That means an 11.7 kW DC array is about 10 kW AC and still Tier 1. FPL's own net metering guidance uses the same conversion.

In Tampa Bay, an 11.7 kW DC system makes about 17,550 kWh a year in our estimate, roughly what a home with a $230 monthly FPL bill uses. Homes with bills well above that are the ones that typically need Tier 2.

The state rule caps Tier 2 insurance at $1 million, and utilities can't require extra design studies or equipment beyond the disconnect switch for Tier 2 systems. Duke Energy Florida also has Tier 2 requirements; ask your installer for its current agreement.

FPL says a homeowners policy or self-insurance can satisfy the requirement if it provides at least $1 million in general liability for the life of the agreement. The certificate has to show your property address and the insurer's identification number. Letting the coverage lapse is grounds for disconnection.

Many homeowners reach $1 million by adding an umbrella policy; ask your agent what it costs. See solar and home insurance in Florida.

Tier 2 goes up to 100 kW AC, far beyond any home's needs. FPL's guidelines add that a system should be estimated to produce less than 115% of your annual use, that systems above 90% of your service capacity may need costly upgrades, and that systems of 50 kW or more need three-phase power.

Under net metering, extra solar beyond your yearly use is paid out at year-end at a low as-available rate, so oversizing rarely pays. See Florida net metering and how many solar panels you need.

More common than you might think. EnergySage's October 2026 data puts the average Florida system at 14.44 kW, about $30,557 before incentives at $2.12 a watt. Counted at 85% for AC, that's about 12.3 kW AC, above the Tier 1 limit, so a typical Florida install already falls into Tier 2.

FPL's Tier 2 agreement says it will tell you within 10 business days whether your application is complete or what's missing, and within 10 business days of a complete application send written notice, including inspection dates if it chooses to inspect. Inspections must be done within 30 calendar days of FPL receiving your signed agreement, and you must give FPL at least 10 calendar days' notice before first turning the system on. The system can't start operating until FPL approves it. See how long solar installation takes in Florida.

FPL sets the tier from the solar array's AC rating, its DC rating times 0.85, and says it reviews batteries on Tier 1 and Tier 2 systems during the application. Battery energy is only for your own use and can't be exported to the grid. Ask your installer how a hybrid inverter will be listed on the application. See home battery cost in Florida.

If your usage needs a bigger system, Tier 2's costs are modest next to the savings: a one-time application fee plus keeping $1 million in liability coverage. If you're close to the line, a system sized at about 11.7 kW DC or less keeps you in Tier 1, and cutting a big load first, such as switching to a variable-speed pool pump, may get you there.

Adding panels later requires a new application at least 30 days ahead, so size for planned loads like an EV now. See solar and EV charging.