Solar production dropped: what is wrong and what the fix costs in Cape Coral

Solar production that dropped is a repair question with four common answers: an inverter fault, a failed microinverter or optimizer on one or two panels, a tripped PV breaker, or a monitoring gateway that stopped reporting so the screen is lying about a system that is fine. A diagnostic visit is $150 to $350, usually applied to the repair if there is one, and most fixes land between a $300 to $600 microinverter swap and a $1,500 to $3,500 string inverter replacement. Send three photos and you often get the answer before anyone drives out.

Check this first

Three checks, none of which require touching the array or opening anything.

Open the monitoring app and look at the date. Is today’s curve there? A flat zero since a specific date usually means the system stopped that day. A blank app with no data at all usually means the gateway lost the network, which is a monitoring problem, not a production problem.
Look at the inverter’s display or LED from the ground or the wall. Green or a normal status screen means it is running. Red, amber, or a code means it has faulted and is telling you what happened. Write the code down. The inverter red light page decodes the common ones.
Check the PV breaker position in the main panel. Solar systems have a labeled breaker, often marked PV, SOLAR, or INVERTER. If it is tripped or in the middle position, that alone stops production. Do not reset it repeatedly if it trips again: read the breaker keeps tripping page first.

That is the whole safe list. Anything past it means DC conductors that stay live whenever the sun is up, which is why the rest is a licensed job.

What is usually wrong

What you are seeing	Likely cause	Fix and cost
Zero output since one date, inverter shows a fault	String inverter failure or grid fault	Inverter replacement, $1,500 to $3,500 installed
Output down roughly one panel’s worth	Dead microinverter or optimizer	$300 to $600 each, cheaper in multiples
Whole array off, inverter dark, breaker tripped	PV breaker, wiring fault, or ground fault	Diagnostic $150 to $350, wiring repair $250 to $900
App shows nothing at all, house has power	Gateway offline, not a production fault	Gateway replacement $300 to $800, sometimes just a network fix
Slow decline over a year or more	Soiling, shading, degradation	Cleaning $10 to $20 per panel, $150 to $250 minimum
Down since a storm	Debris impact, cracked panel, wet junction box	Inspection $200 to $400, panel replacement $400 to $900

Every number is a range from the pricing page, and the inverter replacement and panel repair pages explain what sets the top and bottom.

Why production drops here specifically

Salt and pollen. Homes along the Cape’s canals, on Pine Island, and out on Estero Island carry a salt film that rain does not fully rinse, and spring pollen plus the summer bird traffic under the palms adds to it. Soiling is the slow, boring cause, and it is real: it is also the cheapest to fix, which is why a production inspection at $200 to $400 is worth doing before anyone quotes hardware.

Heat and the wet season. Panels lose output as they heat, and June through September brings both high module temperatures and afternoon cloud. A July that reads lower than a March is not a fault. Compare month to same month a year earlier.

Storm damage that showed up late. Hurricane Ian impacted 52,514 Lee County structures on September 28, 2022 by the National Hurricane Center’s count, and Milton’s October 9, 2024 EF2 tornado ran a 16.56-mile track through Fort Myers and North Fort Myers per the National Weather Service Tampa Bay survey. Water that got into a junction box or a connector during either storm can take a year to corrode through, and the failure looks like a normal age failure when it finally arrives.

Age. A lot of Lee County’s residential solar went up between 2015 and 2023. String inverters last roughly 10 to 15 years, so the first wave is now at the end of that window.

What is still covered

Manufacturer warranties are tied to the equipment, not to the company that sold it. Enphase publishes a 25-year limited warranty on its IQ and M-series microinverters and SolarEdge covers optimizers for 25 years and inverters for 12, and those survive an installer’s bankruptcy. What does not survive is the installer’s labor warranty, and Enphase’s published U.S. warranty excludes the cost of labor to uninstall and reinstall a covered product. So the part can be free while the roof visit is not. If your installer is gone, the orphaned system service page covers the takeover, and the brand pages walk through filing.

What to expect on the call

Say when production dropped, whether it went to zero or partway, what the inverter light or screen is doing, and what the app shows today. Photos of the array from the ground, the inverter label, and the monitoring screen usually narrow it to one part family before anyone drives out. What you want back is a diagnosis, a number from the published ranges, and a scheduled visit rather than a sales appointment. If the honest answer is that nothing is broken and this is a normal August, that is the answer you should hear.

Frequently Asked Questions

Why did my solar production suddenly drop?

A sudden drop is almost always one thing failing: an inverter fault, a dead microinverter or optimizer, a tripped PV breaker, or a monitoring gateway that stopped reporting so the number on the screen is wrong rather than the system. A gradual drop over months is usually soiling, shading from grown trees, or panels degrading unevenly.

How much does it cost to find out why production dropped?

A diagnostic visit is $150 to $350 and covers meter readings, inverter fault logs, monitoring status, and a written finding with a repair quote. Three photos of the array, the inverter label, and the monitoring screen often answer it for free before anyone drives out.

Is lower production in summer normal in Southwest Florida?

Some of it is. Cloud cover during the June to September wet season and high panel temperatures both cut output, and a hot roof in August produces less than the same roof in March even with clean glass. Compare this month to the same month last year, not to last month.

My bill went up but the app looks fine. What now?

Check whether the app is actually current. A gateway that lost the house Wi-Fi keeps showing the last good day it saw, and the bill is the first place that shows up. If the app is live and production is normal, the change is on the usage side, not the array.