Your Solar App Says "Not Reporting"? The Panels Are Fine — Your Wi-Fi Isn't

You open the solar app out of habit, and instead of today's production curve you get a blank. Enphase calls it "Gateway Not Reporting." SolarEdge just shows nothing since some date last month. The Tesla app puts a "Device Offline" banner across the top. Whatever the wording, the reaction is the same: something expensive on your roof has apparently stopped working, and you have no idea for how long.

Here is the short version, and it is much better news than the app makes it look. In the overwhelming majority of these cases the solar system is producing exactly as much power as it did yesterday. What has broken is a small networking box's connection to the internet — and that box is subject to all the same Wi-Fi problems as a smart plug or a wireless printer, with a few extra handicaps that make it worse. Enphase says so themselves on their own support pages: "This doesn't necessarily mean your solar energy system isn't producing, but you may not be able to see any data through your Enphase App."

We are a computer and home-networking shop, not a solar company, and that turns out to be exactly the right trade for this problem. We get called about it a lot in Southern California, usually a week or two after somebody swapped an internet provider or a router. Below is what is actually going wrong, what you are and are not losing while it is offline, the reconnection steps for the three systems we see most, and the change that stops it recurring.

First: the panels are still working

Solar panels and the inverter that converts their output do not need the internet to do their job. Sunlight hits the panels, the inverter turns direct current into the alternating current your house uses, and the surplus flows out to the grid. None of that involves your router, your Wi-Fi password, or the manufacturer's servers.

What needs the internet is the reporting. Every residential system has a separate little communications device — Enphase calls it the IQ Gateway (older ones are branded Envoy), Tesla calls it a Backup Gateway, SolarEdge builds it into the inverter — whose only job is to collect production figures and push them to the manufacturer's cloud so an app on your phone can draw you a graph. When that device loses its connection, the graph stops. The generation does not.

You can usually confirm this from the outside in about a minute. If you have a Tesla Powerwall, the house is still running on stored solar overnight. If you have a utility meter you can read, it will still be spinning backwards on a bright afternoon. And if your electricity bill for the offline period looks normal, that is your answer: the system produced, the utility measured it, and only the picture went missing.

What "not reporting" actually means

Almost every one of these outages is one of four things, and they are the same four things that knock any other device off a home network.

The Wi-Fi password changed. This is the number one cause by a wide margin. A gateway does not have a person sitting at it to re-enter credentials — it holds the password its installer typed in on the day of commissioning and it will keep trying that password forever. Change it, and the gateway is locked out permanently with no way of telling you.

The router changed. New internet provider, upgraded modem, a mesh system replacing the old box — if the network name or the password is different, same result. Enphase list this first among the common causes on their own site: "A change in your home network (like a new router or Wi-Fi password)."

The gateway lost power. Solar gateways are often fed from a dedicated breaker in or beside the main electrical panel. A breaker that tripped during a heatwave or an outage, and got reset selectively, can leave the gateway dark while everything else in the house came back. Enphase's own troubleshooting starts here for a reason.

The signal was always marginal. This one produces the maddening version — reporting that works most days and gaps out at random. Nothing changed; the connection was never comfortable in the first place.

Why solar gateways drop off more than anything else you own

If you have ever wondered why the solar app is the thing that breaks while the laptop, the phones and the TV are all fine, it is not bad luck. A solar gateway has four disadvantages stacked on top of each other.

It lives in the worst place in the house for Wi-Fi. It goes where the electrical service is: the garage, a utility closet, an outside wall behind the meter, sometimes a subpanel at the far end of the property. That is often the single furthest point from the router, and frequently on the other side of stucco with wire lath in it, or inside a metal enclosure. Nobody surveyed the signal there — the electrician mounted it where code and the conduit run said it had to go.

It is usually a 2.4GHz-only device, or was set up as one. The 2.4GHz band travels further and through more walls than 5GHz, which is why this class of hardware uses it, but it is also the crowded band shared with microwaves, baby monitors and every neighbour within range. Enphase tell you to confirm your router has a 2.4GHz network available at all. SolarEdge's wireless communications work in the 2.4GHz range. Tesla are explicit that a Backup Gateway 1 "is only supported on 2.4 GHz networks," while the Gateway 2 will take either band.

It was configured once, by somebody else, and then never touched. An installer connected it on commissioning day and left. There is no browser on it, no notification when it fails, and no obvious way for a homeowner to check on it — the first sign of trouble is that the app went quiet, which most people notice weeks later.

And nothing forces you to notice. A printer that will not print gets fixed the same afternoon. A monitoring gateway that stops reporting causes no inconvenience at all, so it sits there. We have been called out to systems that had been dark for the better part of a year.

So what are you actually losing while it is offline?

This is the part almost nothing written about the topic gets straight, and it is worth being precise about, because it is what decides how urgently you should care.

You are not losing money on your electricity bill. Your utility does not read your solar app. It bills from its own revenue-grade meter at your house, which measures energy flowing in and energy flowing out regardless of whether any app can see it. Southern California Edison spell the arithmetic out on their own net-metering page as plainly as it can be put: "Energy You Produce – Energy You Consume = Net Energy," settled through the year and reconciled at your annual true-up. Nothing about that calculation runs through the manufacturer's servers. A monitoring blackout does not cost you a credit.

What you lose is evidence, and early warning. Three things depend on that production record. First, if your contract carries a production or performance guarantee — common with leases and power purchase agreements — the shortfall is settled against measured production, and a gap in the data is a gap in your case. Read your own agreement, because these terms vary a lot. Second, a warranty claim on an underperforming panel or a failed microinverter is far easier to make when you can show the month it changed. Third, and most practically: monitoring is how you find out a fault exists. A single dead microinverter, a failed optimiser, a string that dropped out after a squirrel got at a cable — none of those turn off your lights or announce themselves. They just quietly take a slice off your production, and the only thing that was ever going to tell you is the app.

Whether the missing days fill themselves back in once it reconnects depends on the brand and on how long the gap ran, so do not count on recovering the history. The sensible reading is that the sooner you get it back online, the less of the record you lose — but you have not been robbed in the meantime.

The five-minute checks before you change any settings

Do these in order. Most jobs end here.

Check your internet is actually up. If the whole house is offline, the gateway is a symptom, not the problem. Open a website on a device that is on Wi-Fi and not on mobile data.

Check the gateway has power. Find it — garage, utility room, next to the main panel, or a grey box outdoors. If it is completely dark with no lights at all, look for a tripped breaker. Enphase's own guidance is to inspect the electrical panel, because a tripped gateway breaker is a common cause of what looks like a dead device.

Read the lights. On an Enphase gateway, a solid green light means it is powered and talking to the Enphase cloud; a flashing green means it is trying to reach the cloud or the router; amber or red means it is on your local network but not communicating with the cloud. That last one is a genuinely useful distinction — amber says the Wi-Fi joined and something further out is wrong, which points at your internet connection rather than your password. On a SolarEdge inverter, a blue LED that is on means it is communicating with the monitoring platform.

Restart both ends. Restart your router, and power-cycle the gateway — for an Enphase gateway that means switching its breaker off, waiting two to three minutes, and switching it back on. Give it several minutes to find its way back before deciding it failed. A surprising number of these fix themselves right here, particularly after a power cut when the gateway came up before the internet did and never retried properly.

Enphase: reconnecting an IQ Gateway or Envoy

Enphase is the most common system we see on Southern California roofs, partly because it is what a great many SunPower installations used underneath the badging.

The reconnection lives in the Enphase app, on the phone you already monitor with. The path is Menu, then System, then Devices, then Gateway, then Configure Wi-Fi. Choose your network, enter the current password, and wait — it can take a few minutes to come up and register with the cloud.

Two things go wrong here. The first is that your network does not appear in the gateway's list at all. That is usually the band problem: the gateway is scanning 2.4GHz and your router is presenting a single combined network name for both bands, or is 5GHz-heavy. Enphase's advice is to confirm the router offers a 2.4GHz network and, if it uses one name for both, to consider splitting them into separate network names — then to enter the 2.4GHz name and password manually if it still will not show.

The second is that you are standing at the app with good signal on your phone while the gateway, thirty feet away in the garage, has almost none. Your phone's reception where you are standing tells you nothing about reception where the box is. If it joins and then drops again within a day, treat it as a signal problem and skip to the permanent fix below.

SolarEdge: reconnecting the inverter

On a SolarEdge system the communications are inside the inverter itself, so this is done standing at the inverter, over Bluetooth or the inverter's own local connection, rather than over your house Wi-Fi.

Homeowners can do it from the mySolarEdge app, which will let you configure the Wi-Fi settings and re-establish communication. The installer-side route, if yours needs it, is through SetApp: connect to the inverter, go to Monitoring Communications, choose Change Connection Type at the bottom of the screen, select Wi-Fi, pick the network and enter the password. SolarEdge note that the connection can take up to two minutes, and that the blue LED coming on is your confirmation that it is sending data again.

Two SolarEdge requirements are worth knowing because they cause failures that look like nothing else. The password is case-sensitive, which sounds obvious until you are typing a long random string on a phone in a hot garage. And the network name itself has to be simple: SolarEdge specify that the router's SSID should contain only letters, numbers and hyphens, with no special characters and no spaces. If your network is called something like "Smith Family Wi-Fi 5G!" the inverter may simply refuse to join it. That single rule has ended more than one call for us, and it is a good argument for the plain, boring network names we recommend anyway.

Tesla: Powerwall, Backup Gateway and Solar Inverter

When a Tesla energy system is fully offline the app shows a "Device Offline" banner on the home screen and stops showing current power flow or energy data. Tesla name the two usual causes as the Wi-Fi network having changed or the local cellular connection having gone down — many of these units also have a cellular backup path, which is why some Tesla systems stay visible through a router change and others do not.

Network settings are updated through the Settings page on the Tesla app home screen, and you can change them at any time. One convenience worth knowing: if the system is still reachable some other way — over Ethernet, or over its cellular connection — you can select the new Wi-Fi network and enter the password from the app without standing next to the hardware. If it is completely offline, you will need to be near the Gateway.

The band matters here too, and Tesla are unusually clear about it: a Backup Gateway 1 is supported only on 2.4GHz networks, while a Gateway 2 works on 2.4GHz or 5GHz. If yours is a Gateway 1 and your new router broadcasts one merged network name, that is very likely your whole problem.

The two router settings behind most of these failures

If you take one thing from this page, take this: the change that most often breaks solar monitoring is not a fault, it is a modern router doing what modern routers do.

Merged bands and band steering. Almost every router shipped in the last few years broadcasts 2.4GHz and 5GHz under a single network name and quietly decides which one each device should use — sold as Smart Connect, Whole-Home Wi-Fi, or just left on by default. That works beautifully for phones and laptops and badly for stubborn 2.4GHz-only equipment, which either cannot see a network it can join or gets shoved toward a band it cannot use. The fix is to give the 2.4GHz band its own network name, or to use the dedicated IoT network many routers now offer, and put the gateway on that. Same fix as for smart plugs and wireless printers, and the same reason.

An unfriendly network name. Spaces, apostrophes, emoji and punctuation in an SSID are fine for a laptop and a real problem for embedded hardware — SolarEdge rule them out explicitly. Letters, numbers and hyphens only, and it is worth doing on any network with solar, alarm or camera gear on it.

The permanent fix: get it off Wi-Fi, or give it a network of its own

Reconnecting a gateway is a twenty-minute job. Making sure you never do it again is the part worth paying attention to, and there are three levels of it.

Best: put it on a cable. If the gateway has an Ethernet port — most do — a wired connection removes every problem on this page at once. Bands, passwords, interference, distance, the neighbour's new router: all gone. The obstacle is usually that there is no network jack in the garage, and that is a solvable problem without opening a wall: a coax outlet in or near the garage can carry a proper wired link over MoCA, and powerline adapters are an option where the circuits cooperate. This is the single highest-value change you can make to a solar install's reliability, and it has nothing to do with solar.

Good: a dedicated 2.4GHz network with a name and password you will not change. Split the bands, name the 2.4GHz network something plain, and reserve it for the gear that sits in awkward places — solar gateway, alarm panel, cameras, garage-door opener, the printer. Then leave it alone forever, even when you change the main household password.

Worth doing anyway: improve the signal where the box actually is. A mesh node or access point in the garage fixes the marginal-signal version of the fault and usually improves Wi-Fi in the driveway and the back of the house while it is at it. An extender is the weakest of these options, for the usual reasons.

Whose monitoring account is it, anyway?

There is a second, quieter version of this problem that no amount of Wi-Fi troubleshooting will fix: the app itself has gone away, or you never had proper access to it.

A large share of residential systems were registered by the installer, under the installer's account, with the homeowner given a limited view. That works fine until the installer stops existing. It is not a hypothetical: SunPower Corporation, one of the biggest names in American residential solar, filed for Chapter 11 bankruptcy protection in the US Bankruptcy Court for the District of Delaware on August 5, 2024, and its assets were subsequently sold — Complete Solaria acquired its Blue Raven Solar business, New Homes division and non-installing dealer network for $45 million. Plenty of Southern California households with panels on the roof found the company whose logo was on the app was no longer the company answering the phone.

The useful thing to understand is that the badge on the app and the hardware on the wall are frequently made by different companies. A great many systems sold under an installer's brand are running Enphase microinverters, or a SolarEdge inverter, underneath. If the branded app is dead, the manufacturer's own monitoring platform generally is not, and a system can often be registered directly with the manufacturer using the serial numbers on the equipment. That is worth knowing before you conclude your monitoring is gone for good.

This is also the moment to find your paperwork, and California's own consumer guidance says so. The Solar Consumer Protection Guide the state requires every residential solar customer to sign — the current version was published in October 2025 by the California Public Utilities Commission — tells homeowners to "Save copies of all the documents you receive," because "The information will be useful if you sell your home, need to replace your roof, or have any repair or maintenance issues." Your equipment list, serial numbers, warranty terms and monitoring registration all live in that pile.

When you change routers or internet providers, do this one thing

Every one of these calls we get has the same origin story, and it is preventable in about ten seconds.

When you replace a router — new provider, upgraded gear, a mesh system going in — set the new router to use the exact same network name and the exact same password as the old one. Every device in the house then reconnects on its own, including all the ones you have forgotten about: the solar gateway, the alarm panel, the doorbell, the thermostat, the garage-door opener, the printer, the robot vacuum. It is the difference between an afternoon of chasing devices and nobody noticing anything happened.

If the password genuinely has to change, make a list of the silent devices first, because none of them will tell you they are locked out. And if you have solar, put the gateway at the top of that list — it is the one device where the failure is invisible for months.

The same applies when you move house, incidentally, with one addition: monitoring for a system you no longer own should be handed over with the property, and the new owner will need it registered to them.

What we touch, and what we do not

To be straightforward about the boundary: we work on the network side of this — the Wi-Fi, the router configuration, the wired run to the garage, the gateway's connection settings and the monitoring account. We do not do solar electrical work, and neither should any other computer shop.

Anything on the electrical side of a residential solar system is licensed work in California. The state's own guidance is specific about which licences apply: an active Contractors State License Board licence holding classification C-46 (Solar Contractor), C-10 (Electrical Contractor), and/or B (General Building Contractor). If the diagnosis turns out to be a failed inverter, a dead microinverter, a wiring fault or anything behind the panel cover, that is a job for a licensed solar or electrical contractor, and we will tell you so rather than take the work.

The good news is that the split falls overwhelmingly on our side of the line. When someone calls us because the solar app went blank, the answer is a networking answer far more often than not.

How we can help

If your solar monitoring has been dark for a while and you would rather not spend an afternoon in the garage with a phone, this is a routine job for us: work out whether it is power, password, signal or account, get the gateway talking again, and then fix the underlying reason so it stays that way — usually a wired run or a dedicated 2.4GHz network rather than a reconnection that will fail again at the next router change.

We cover homes and small businesses across Southern California, and we are happy to say up front when a problem is not ours to fix. Get in touch and tell us what the app says and what colour the lights are — that is usually enough for us to tell you over the phone whether it is a five-minute fix or a visit.