Free bill analysis - bring a power bill, get the production math for your actual roof, panel brands like Qcells and REC compared side by side
If the pitch starts at your door and ends with "sign tonight for the special," sleep on it. The sun will still be there tomorrow; so will we.
Fast, Reliable Solar Panel Repair Across Tustin
Solar panel repair in Tustin typically runs $185 to $2,400 depending on whether you’re replacing a single microinverter, swapping a failed string inverter, or re-flashing a roof leak around your mounts. Most repairs Gus’s Solar handles in Tustin are done same week, and we carry the common replacement parts on our trucks so you’re not waiting on a shipment from a distributor in Phoenix. We know the neighborhoods here: the tile roofs of Tustin Ranch, the bungalows in Old Town, the new construction along the Tustin Legacy corridor. If your system is down or underproducing, call (877) 550-6892 and a live person answers. That’s Gus’s phone, not a call center.
Why Gus’s Solar Is Tustin’s Preferred Solar Panel Repair Company
Gus Petrakis started this company in 2011 and put his own name on the truck. When a Tustin homeowner calls about a dead inverter or a roof leak, the person who picks up is someone who can actually answer the question, not a scheduler reading from a script. We’ve worked on enough homes in 92780, 92781, and 92782 to know the difference between a Tustin Ranch two-story with a 200-amp panel and an Old Town bungalow with 100-amp service and an undersized roof plane. That local knowledge means we diagnose faster and quote accurately instead of guessing from a satellite photo.
Every repair we do in Tustin is backed by the 90-Day Done Right Promise. If it’s not right, Gus makes it right. In writing, on every job. We also show up with background-checked, uniformed crew members, not a subcontracted crew that’s never been to Orange County. And when you call with a downed system, we treat it like the emergency it is: a live person answers 24/7 and we’ll be there, usually same day for Tustin addresses.
Our Solar Panel Repair Services in Tustin
Not every solar problem needs a full system replacement. Here are the repairs we handle most often across Tustin, including the specific issues we see in this city’s housing stock. If you’re unsure what’s wrong, call us at (877) 550-6892 and we’ll help you figure it out over the phone before anyone climbs on your roof.
Inverter Repair & Replacement
A failed string inverter shuts down the entire array, and Tustin’s warmer inland sun hours mean these units run hotter than identical models in coastal Orange County. We replace failed SolarEdge and Tesla inverters with current models and handle the paperwork for your utility interconnection. In Tustin Ranch, we’re familiar with the HOA review process for visible equipment changes and plan the timeline accordingly.

Microinverter Replacement
Microinverters fail one at a time, which makes them harder to notice. A 25-year-old Tustin Ranch system might have one or two dead Enphase microinverters dragging down overall output without ever throwing an obvious error on your monitoring app. We test each unit across the roof, isolate the failures, and replace only what’s dead. You don’t need to replace a whole working system because a few units have failed.

Wiring & Connector Repair
Squirrels in Tustin’s mature trees, heat-aging on rooftop junction boxes, and poor original connections all cause wiring failures that can trip your inverter or create hot spots. We trace the fault, repair or replace the damaged run, and make sure every connection is torqued to spec. Older Tustin systems sometimes have MC3 connectors that are no longer code-compliant; we replace those during any repair rather than leaving a future fire risk.

Panel Replacement After Damage
Roof work, hailstorms, and falling branches crack panels. A cracked panel might still produce, but the moisture ingress will eventually corrode the internal contacts and short the string. We source replacements that match your existing array’s wattage and physical size, which matters on smaller Old Town roof planes where every square inch of array real estate was carefully planned.

What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Tustin
We work on systems built around Enphase, SolarEdge, Tesla, Qcells, REC, SunPower, and Panasonic equipment. The reason that matters in Tustin: different neighborhoods lean toward different hardware generations. We see a lot of first-generation SunPower panels on Tustin Ranch homes built in the late 1990s and early 2000s, and a lot of Qcells and REC arrays on newer Tustin Legacy construction. We keep common replacement parts stocked locally so you’re not paying for overnight freight on a single microinverter.
Common Solar Panel Repair Problems We See in Tustin Homes
- Gradual microinverter failure on aging Tustin Ranch systems. Panels still look fine, but kWh output has been dropping for months. Owners often only notice at their annual true-up statement, and by then they’ve been paying SCE for power the system should have made.
- Roof leak repairs that turn into panel-lifts. Old Town Tustin homes from the 1940s and 1950s have asphalt shingle roofs with degraded flashing around original mounts. A small water stain inside is often a sign that the mount flashing has failed, and the fix requires lifting the panel and re-flashing the penetration.
- HOA approval delays stalling repairs. Tustin Ranch HOAs can take up to 45 days to review even a simple inverter replacement under California’s Solar Rights Act. If your system is already down, that wait is painful. Plan accordingly and start the paperwork early.
- Legacy interconnection agreements that don’t match the current system. On Tustin Legacy new construction, ownership transfers can leave the interconnection agreement in the original buyer’s name. Your system looks fine but you’re not getting net metering credit until the utility records are corrected.
Pricing for Solar Panel Repair in Tustin, CA
Here’s what we charge for the most common repairs we handle across Tustin. These are real numbers, quoted upfront, and they don’t change when we arrive. Bring us your electric bill and we’ll build the math off your actual usage, not a brochure estimate.
- Microinverter replacement (single unit): $185 to $325 installed, depending on model and roof access.
- String inverter replacement: $850 to $2,400, including equipment, labor, and interconnection paperwork.
- Wiring or connector repair: $150 to $475, depending on fault location and conduit access.
- Roof leak repair around mounts: $400 to $1,200 per penetration, more if the panel needs to be lifted and the flashing fully replaced.
- Panel replacement after damage: $350 to $850 per panel, matching existing wattage and frame specs.
We offer $40 off any repair over $200, a free second opinion on any written estimate, no trip charge inside our own county, and a 10% senior and veteran discount that never expires. Take two weeks to think about any quote. The price will be the same when you call back.
We Also Serve Cities Near Tustin
Gus’s Solar handles Solar Panel Repair throughout Orange County, including Tustin and the surrounding communities: North Tustin, Santa Ana, Irvine, and Orange. If you’re in one of these cities and your system is down, call (877) 550-6892. We’ll be there.
Serving Tustin, CA - Our Local Coverage Area
We’re based in the Tustin area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Solar Panel Repair in Tustin
Your inverter replacement in Tustin Ranch could be delayed up to 45 days because the HOA is legally entitled to review the application under California’s Solar Rights Act, even though the law says they can’t block it. We’ve seen HOAs sit on a compliant application for the full window, which means a simple inverter swap that would take one day in Irvine or Orange can stretch to six weeks in Tustin Ranch if the equipment location or visible conduit routing changes. The way to avoid this drag: start the HOA paperwork now, before your system fully dies. Call (877) 550-6892 and we’ll help you get the forms filed.
If the panel is physically intact but underproducing, you can usually replace just that panel, but matching a 25-year-old panel’s wattage and frame size is getting harder because most of those models are out of production. If you have multiple panels failing, or your inverter is also approaching the end of its service life, a full array replacement may actually cost less per watt than nursing the old system along. We’ll give you an honest comparison of both paths, based on your actual production history. Estimates are free, and the 90-Day Done Right Promise applies to whatever we do.
A zero-production true-up on a Tustin Legacy home usually means the interconnection agreement was never transferred to your name when you bought the house, so SCE isn’t crediting you for power your system exports. It can also be a rapid-shutdown compliance issue if the original installer left off required labeling or didn’t update the system drawings. Either way, the fix is paperwork and often a few hundred dollars in corrective work, not a new system. Call us and we’ll run through your monitoring data and utility records to find the block.
Old Town Tustin bungalows often have 100-amp electrical panels and small, segmented roof planes that were never designed for modern array sizes. You can often still add a few panels, but you may need a panel upgrade to 200-amp service or a redesign that works around the shade from old-growth trees. For existing systems on these homes, the more common issue is degraded flashing around mounts causing leaks that need a panel-lift and re-flash. We’ll tell you honestly what your roof and electrical service can support before you spend a dollar.
You usually don’t know, not month to month. The first sign is a gradual drop in total kWh output on your monitoring app that doesn’t match any obvious panel damage. By the time your true-up statement shows a higher bill than last year, two or three microinverters may have been dead for months. We can run a per-panel production test across your entire array in one visit and tell you exactly which units are dead, which is far cheaper than replacing components on a guess. Estimates are free; call (877) 550-6892.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Tustin since 2011.






Before
After
Before
After
Before
After