How much solar really saves in Florida (and why some people don't save)

Solar in Florida saves between 25% and 50% of the total bill on a well-designed system, once you subtract the monthly system payment. It does not save 100%: the utility’s minimum charge always remains, and if you financed, so does the payment. People who “saved nothing” almost always had a small system, a contract with an escalator, shade, more usage than planned, or an installer that disappeared.

Which part of the bill can solar attack?

Only the energy portion, not the fixed charges. Your bill has two blocks: what you pay for kWh consumed and what you pay to stay connected. Solar reduces the first; the second does not move.

With Florida numbers: the average residential rate is 15.38 cents per kWh per EIA data reported by EnergySage (April 2026), and average usage is 1,104 kWh a month per the EIA. That works out to about $170 a month in energy. That is the target. FPL’s minimum charge is $25 a month per its rate document; Duke and TECO have their own.

If you pay cash, the monthly savings are nearly the whole energy line. If you finance, the savings are the gap between what you used to pay and what you now pay (minimum charge + payment). That gap is where 25-50% lives.

Why do we say 25-50% and not more?

Because that is what honest arithmetic gives with a monthly payment in the picture. A system that replaces $170 of energy with a $25 minimum charge plus an $85-$125 payment leaves $20-$60 a month in savings: 12% to 35% of the original bill. With lower payments or higher bills, the range climbs toward 50%. With cash, it climbs higher, but then you are measuring return on investment, not monthly savings.

EnergySage estimates a 9.84-year payback for Florida and about $64,627 in 25-year savings for the average system bought in cash. It is a reasonable calculation with published assumptions, but it is an average: your number depends on your usage, your rate and your roof.

Heads up: the industry sells savings with sky-high percentages or with “eliminate your bill.” Neither is true for a home connected to FPL, Duke or TECO. If the proposal shows a $0 bill, you already know the minimum charge was left out. If it shows a percentage far above 50%, it probably deducted a federal credit that no longer exists for buyers or plugged in an optimistic rate escalator.

What is the minimum charge and why can’t it be eliminated?

It is what it costs to have the grid available even if you do not use it. FPL explains that its $25 minimum base bill covers fixed system costs that do not vary with usage: meter, billing, poles, transformers. It applies to every customer, including net metering customers. The only way to avoid it is to disconnect from the grid, which means large batteries, a generator and a cost that makes no sense for a Florida home.

That is why our commitment is called the Minimum Bill Guarantee: if the system produces less than promised in any month, we pay the difference. We do not promise zero because zero does not exist.

Why do some people say they “saved nothing”?

Because one of these five things happened to them, sometimes several.

1. System at 100% of usage or less. One hot summer and the system falls short: you pay grid kWh at full rate on top of the payment. That is why we design at 110% (how many panels do I need).
2. Escalator in the contract. Many leases and PPAs raise the payment every year. Solar.com reports that a 2.9% annual escalator is common; at that pace the payment nearly doubles over 25 years. If the utility’s rate rises less than that, the savings evaporate.
3. Shade nobody accounted for. A tree that grew or a neighbor who built. Real production lands below the simulation.
4. Usage went up. New pool, electric car, an aging AC that got worse, or simply “I have solar now, I’ll leave the AC at 70.” The system produces the same; the house uses more.
5. Installer gone. The inverter failed, nobody fixed it and the system has been at zero for months. The payment keeps coming. Read solar panels not producing: what to do.

None of these is “solar doesn’t work.” All of them are “the design or the contract was wrong,” and all are catchable before signing.

The real numbers we can actually show

Three customers with verifiable bills: Yuniesky V. in Hialeah went from $214.90 on FPL to −$40.79 the same month the following year (the bill said “DO NOT PAY”). Claudia V. in Tampa receives TECO bills of $13.67. Diego Y. has his bill at $30. These are specific cases, not averages, and each has its own system size and contract. They show what happens when the design has margin; they do not guarantee your home will produce the same.

When it does NOT make sense

• When your energy charge is low: if you spend $80 a month on kWh, the minimum charge and the payment eat nearly all the possible savings.
• When the proposed payment equals or exceeds your current energy line: you save nothing today, you are only betting the rate goes up.
• When the contract has a high escalator and you plan to stay many years: the savings of the early years get handed back in the late years.
• When the roof, shade or the utility (a municipal without 1-to-1 credit) keep real production from reaching the target.

What to check before you decide

• Split your bill into the energy line (kWh × rate) and the fixed charge: only the first is savable.
• Compare the proposed monthly payment against that energy line, not against “the bill in 2050.”
• Ask whether the contract has an escalator and how much; request the year-by-year payment table.
• Confirm the design covers at least 110% of your usage with a month-by-month simulation.
• Ask what happens if the system produces less than promised: who pays the difference and how you claim it.