Chris Meehan has covered solar and clean energy since 2010 and served as Executive Editor of SolarReviews for seven years, running its daily industry news desk. His work has appeared in Sun & Wind Energy and other trade publications.
When a solar system stops producing, the panel is rarely the culprit. Panels are the most durable part of the array; the electronics that manage them are not. Knowing the usual suspects, in order, saves homeowners from paying panel-replacement money for an inverter-sized problem.
The Usual Suspects, in Order
First, the inverter or microinverters: the hardest-working electronics in the system, typically warrantied 10 to 25 years depending on type, and the most common cause of a system flatlining to zero. Second, wiring and connectors: chewed by squirrels, degraded by weather, or loosened at connection points, often showing up as partial production loss. Third, the meter or monitoring itself: sometimes the system is producing fine and only the reporting broke. Actual panel failures, cracked glass or hot spots, sit last on the list.
Before You Pay Anyone: the Warranty Stack
A solar system carries several warranties at once: panel product and production warranties (commonly 25 years), inverter warranties (commonly 10 to 25 years), and the installer’s own workmanship warranty covering the labor and roof penetrations. Some installers in our vetted network publish workmanship terms of 25 years or more, and one publishes 30. Which warranty applies decides who pays, so pull your paperwork before calling for quotes, and if your original installer is gone, the equipment warranties usually survive: manufacturers honor them through other certified installers.
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What Repairs Tend to Cost
Out-of-warranty repair pricing is mostly labor: diagnosis visits, roof access and electrical work, which is why quotes vary more by roof and region than by part. String inverter replacement is the big-ticket item, commonly quoted in the low thousands installed; individual microinverter swaps, wiring fixes and connector repairs typically land in the hundreds. Get the diagnosis in writing with the failed component named, then check that component’s own warranty before accepting an out-of-pocket quote.
Repair or Rethink: the Year-Ten Question
An aging system with a failed inverter is a fork in the road: replace the inverter and run another decade, or reassess the whole roof if the array is undersized for how your usage has grown. If repair quotes are approaching a meaningful fraction of a new system’s cost in your state, price both paths before deciding; our state guides carry current fair-price ranges for the second path.
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Solar Repair FAQs
Why is my solar system producing nothing at all?
A zero, as opposed to a dip, usually means the inverter, a tripped breaker, or a grid-side shutdown after an outage. Check the breaker and the inverter display or app first; many total outages end without a service call.
Who repairs solar panels if the installer went out of business?
Any qualified solar service company can work on the system, and equipment warranties from the panel and inverter manufacturers typically survive the installer. The workmanship warranty is what dies with the company, which is why installer longevity belongs in every purchase decision.
Is low production a repair issue or a dirt issue?
Compare against the same month last year. A gradual seasonal-shaped decline points at soiling or shading growth; a step-change down on a specific date points at hardware. Monitoring apps that show per-panel output settle it fastest.
References & Research Sources
Warranty terms per panel and inverter manufacturers’ published documents and the installer warranties recorded on EcoGen America installer profiles (each citing the company’s own materials). Failure-mode ordering per manufacturer service documentation and industry service guides, accessed September 2026.