Your new roof looks great, the crew packed up Friday, and then you opened your solar app Saturday morning to a gray screen and the word “offline.” Now you’re wondering if the roofers broke something, if you’re burning money every sunny day, and who you’re even supposed to call.
Take a breath. A solar system offline after roof replacement is one of the most common calls we get in Greeley, and most of the time the fix is simple. Sometimes it’s a switch somebody forgot to flip. Sometimes it’s a Wi-Fi gateway that lost its connection during the chaos. And sometimes it’s a real wiring problem that needs a licensed pro on the roof.
This guide walks you through what’s actually happening, the safe checks you can do yourself in about ten minutes, and the point where you should stop and pick up the phone. We’ll also cover what fixes cost around Weld and Larimer counties, so nobody can pad an invoice on you.
Why Your Solar System Goes Offline After a Roof Replacement
When your panels came off for the reroof, your system didn’t just get unplugged like a lamp. A proper detach and reset in Greeley involves shutting down the whole system in a specific order: the AC disconnect, the inverter, the rapid shutdown devices, and the DC connections up on the roof. Then everything gets reversed during reinstall.
That’s a lot of steps, and every step is a chance for something to get missed. Here’s what usually goes wrong:
- A breaker or disconnect was left off. The most common cause by far. The solar breaker in your main panel, the outside AC disconnect, or the inverter’s own DC switch never got flipped back on.
- The rapid shutdown switch wasn’t reset. Code requires a rapid shutdown system that kills power at the panels. If it’s still in the “off” position, your panels are fine but producing nothing.
- The monitoring gateway lost its connection. Enphase Envoy, SolarEdge gateway, Tesla Gateway, whatever you have. If it got unplugged during interior work or your Wi-Fi router got moved, the system may be producing power while the app shows nothing.
- A connector didn’t seat fully. MC4 connectors on the roof click together by hand. One that’s almost-but-not-quite locked can work for a day and then drop a whole string.
- Something got damaged. Cracked panel glass, a pinched wire under a mounting foot, a microinverter that took a knock. Less common, but it happens, especially when a roofing crew moved the panels instead of a solar crew.
Mark in Evans lived this exact story last fall. His reroof wrapped on a Friday, his Enphase app showed the system offline all weekend, and by Monday he was convinced the roofers had wrecked his array. Our tech found the rapid shutdown switch still in the off position, flipped it, and watched all 24 panels come back in under 20 minutes. Total cost: a $189 diagnostic visit and a lot of relief. If your system’s been dark since the reroof, reach out for a free written estimate or call us at (970) 286-3417 before you assume the worst.
Safe Checks You Can Do Before Calling Anyone
You don’t need to climb on the roof, and you shouldn’t. Everything below happens at ground level with your hands off any wiring. If any of this feels unfamiliar, skip straight to the phone call.
1. Check the solar breaker in your main panel. Open your breaker panel and look for the breaker labeled “solar,” “PV,” or “inverter.” If it’s tripped or off, flip it fully off, then back on. If it trips again immediately, stop. Repeated tripping means a fault, and a pro needs to find it.
2. Check the AC disconnect. This is the gray box near your meter with a big handle. It should be in the ON position. Roofers and inspectors sometimes shut it off and forget it.
3. Check the inverter itself. String inverters (SolarEdge, Fronius, SMA) have a DC switch on the bottom or side. Make sure it’s on. Then look at the display or lights. A green light usually means producing. Red or flashing usually means a fault code, and that code is gold. Write it down or photograph it.
4. Give it until mid-morning. Inverters won’t wake up in the dark or in very low light. If you’re checking at 7 a.m. in November, the system may just be waiting on the sun.
5. Check the monitoring hardware. Find your gateway box (often near the inverter or your router) and make sure it’s plugged in and showing normal lights. If your Wi-Fi network name or password changed, or the router moved during construction, the gateway may need to be reconnected to your network. This is the one fix that’s genuinely DIY-friendly, and most manufacturers walk you through it in the app.
6. Wait one full sunny day after a reset. Some systems take hours to reconnect to monitoring servers and start reporting again, so don’t panic if the app doesn’t update instantly.
That’s the whole list. Notice what’s not on it: opening the inverter, touching roof wiring, pulling panels, or “just checking” connectors. The DC side of a solar array carries lethal voltage whenever the sun is up, even with breakers off. The Department of Energy’s homeowner guide on installing and maintaining a home solar system says the same thing we do: maintenance beyond basic checks belongs with qualified installers.
Monitoring Offline vs. Not Producing: They’re Different Problems
Here’s a distinction that saves people real money. “Offline” in your app can mean two very different things:
The monitoring is offline but the system is producing. Your panels are making power, your meter is spinning backward, and only the reporting is broken. Annoying, but you’re not losing a dime. The tell: check your utility meter on a sunny afternoon. If it shows power flowing to the grid, or your Xcel or Poudre Valley REA bill shows solar credits, production is happening.
The system itself is down. No production, no credits, and every sunny day costs you money. A typical Greeley-area home system makes roughly $3 to $6 worth of electricity per sunny summer day. Three weeks offline in July can quietly cost you $80 to $120.
Carrie in Windsor found this out the hard way. Her app went dark after a reroof in June, and she figured it was “just a Wi-Fi thing” for almost a month. It wasn’t. Her solar breaker was off and one MC4 connector on the roof had been damaged during the panel reinstall. The repair ran $340, which stung less than realizing she’d also eaten about $95 in lost production while she waited. If your app has been dark for more than a week, don’t guess. Get a free written estimate and we’ll tell you straight whether it’s a reporting glitch or real downtime.
One more wrinkle: a system can be online and still underperforming. If your monitoring came back but the numbers look weak compared to last summer, one string may be down or miswired. We cover that whole situation in why solar panels produce less after a reinstall.
Common Causes of a Solar System Offline After Roof Replacement, Ranked by Cost
Here’s what we actually find on service calls across Greeley, Evans, Windsor, Johnstown, Eaton, and Firestone, roughly ordered from cheapest to most expensive:
| Cause | Typical Fix | Typical Cost in Northern Colorado |
|---|---|---|
| Breaker, disconnect, or rapid shutdown left off | Flip the switch, verify startup | $0 DIY, or $150 to $250 service call |
| Monitoring gateway lost Wi-Fi | Reconnect via app | $0 DIY, or $100 to $200 if we handle it |
| Loose or damaged MC4 connector | Replace connector, reseat string | $200 to $450 |
| Miswired string after reinstall | Trace and correct wiring | $250 to $600 |
| Failed microinverter or optimizer | Replace unit (often under warranty) | $150 to $400 labor if part is covered, $500 to $900 if not |
| Damaged panel (cracked glass, broken cell) | Replace panel | $600 to $1,200 per panel installed |
| Inverter failure | Repair or replace | $1,500 to $4,000 |
Two notes on that table. First, warranty coverage matters a lot. Microinverters and optimizers usually carry 25-year warranties, and panels 12 to 25 years, so the part itself is often free and you’re paying labor. Second, if the damage happened during the reroof, the roofer’s insurance or the crew that moved the panels may be on the hook, not you. This is one big reason we push homeowners to use a dedicated solar crew for the detach and reset instead of letting the roofing crew wing it. We wrote up the full picture in can roofers remove solar panels.
Dale in Johnstown got caught in the expensive end of this. His roofer’s crew pulled and reset the panels themselves to save him money. After the reroof, his system showed online but was producing about 40 percent below normal, and one string was completely dead. A miswired string plus one crushed connector cost $475 to correct, and the roofer’s crew didn’t carry solar-specific coverage, so Dale paid out of pocket. The few hundred bucks he “saved” on the detach and reset evaporated.
When to Stop Troubleshooting and Call a Pro
You’ve checked the breakers, the disconnect, and the gateway. The sun’s been up for hours. Here’s the bright line: if any of the following is true, stop and call a licensed solar professional.
- A breaker trips again after you reset it once
- The inverter shows a fault code, especially anything mentioning ground fault, arc fault, or isolation
- You smell anything burnt near the inverter or panel
- The fix would require touching roof wiring, connectors, or the panels themselves
- The system has been down more than a few days and nothing above worked
Ground faults and arc faults aren’t “wait and see” problems. They’re the inverter detecting electricity going somewhere it shouldn’t, and that’s a fire risk, not just a production problem. The National Renewable Energy Laboratory right up the road in Golden has published extensively on PV system safety and performance, but the short version is simple: modern inverters shut down for good reasons. Don’t try to force one back on.
Timing matters too. If your reroof was part of a hail claim, your insurer expects the whole scope wrapped up, and a dead solar system can complicate the final invoice and your depreciation recovery. And if a storm knocked things loose in the first place, that fault may be storm damage, not installer error. Our emergency solar service in Greeley runs a 24/7 line for exactly these situations, and we sort out fault codes after storms often enough that we wrote a separate guide on solar inverter errors after a storm.
Here’s what a professional visit from us looks like. We verify shutdown, test each string’s voltage and current, check every accessible connector, pull inverter logs, and give you a written finding you can hand to your roofer or your insurer. No guessing, no “probably fine.” Call (970) 286-3417 and we’ll usually have a tech out within a day or two, same day for emergencies.
How to Keep This From Happening on Your Next Reroof
If you’re reading this before the roof work starts, you’re in the best position. A few habits prevent nearly every offline headache:
Photograph your monitoring dashboard before the panels come off. Screenshot a good production day and your system layout. That baseline settles every “was it always like this?” argument later.
Use a solar crew for the detach and reset. A dedicated crew labels every wire, maps every panel position, torques every connection to spec, and recommissions the system with you watching the app come back online. Roofers are great at roofs. Solar wiring is a different trade.
Get recommissioning in writing. Your detach and reset quote should explicitly include system startup, monitoring verification, and a production check. If a quote doesn’t mention turning the system back on, ask why. It’s a corner that gets cut.
Check the app within 48 hours of reinstall. Problems caught in the first two days are easy to pin on the responsible party. Problems discovered a month later turn into finger-pointing between the roofer, the solar crew, and you.
Compare a full month of production once you’re back online. One weak panel out of 20 won’t show up in a daily total, but it jumps out in a panel map.
The whole detach and reset process, done right, has recommissioning built into the final step. If you want to see what that looks like start to finish, our walkthrough of what solar detach and reset actually involves lays out each stage.
Frequently Asked Questions
How long should I wait before worrying about my solar system being offline after a reroof?
Give it one full sunny day after the reinstall, since inverters and monitoring gateways can take hours to reconnect and start reporting. If the app is still dark after 24 to 48 hours of decent sun, run the ground-level checks in this article. Anything beyond two or three days of no production deserves a service call, because every sunny day offline is money out of your pocket.
Did my roofer break my solar system?
Maybe, but don’t lead with the accusation. The majority of offline systems after a reroof come down to a switch, breaker, or Wi-Fi connection that nobody flipped back, not physical damage. A professional diagnostic gives you a written finding, and if the crew that moved the panels did cause damage, that document is exactly what you need to get their insurance to cover the repair.
Is it safe to reset my solar breaker myself?
Resetting a tripped breaker once, at the panel, with dry hands, is a normal homeowner task. If it trips again right away, stop, because repeated tripping means the breaker is protecting you from a real fault somewhere in the system. Never open the inverter, touch roof wiring, or handle connectors yourself, since the DC side stays energized whenever the sun is up.
Who pays for repairs if my system was damaged during the roof replacement?
It depends on who moved the panels and what your contracts say. If a licensed solar crew handled the detach and reset, their workmanship warranty and insurance typically cover reinstall errors. If the roofing crew moved them without solar-specific coverage, you may end up in a dispute, which is why we recommend getting the responsible party and recommissioning terms in writing before work starts. If the underlying cause was hail or storm damage, your homeowner’s policy may cover it as part of the claim.