“No solar traffic” is a status message in your solar monitoring system that means your solar panels aren’t sending production data to your gateway or monitoring app. It does not necessarily mean your panels have stopped producing electricity. In most cases, it signals a communication breakdown between your equipment, not an actual production failure.
This message appears most commonly in Enphase systems, where the IQ Gateway (formerly called the Envoy) acts as the hub that collects data from each microinverter and sends it to the cloud. When that data flow is interrupted at any point along the chain, your app may show “no solar traffic,” “microinverters not reporting,” or a similar alert.
Why Communication Breaks Down
Your solar monitoring system has a communication chain with three main links: the microinverters on your roof, the gateway inside your home, and your internet connection to the cloud. A break at any point triggers the error. The most common causes fall into a few categories.
Internet or network issues. If your home Wi-Fi password changed, your router was replaced, or your Ethernet cable came loose, the gateway can no longer reach the cloud. The system keeps producing power, but the app has no way to display it. This is the single most frequent reason for the error.
Gateway power loss. If the gateway was unplugged, lost power during an outage, or tripped a breaker, it stops collecting data from your microinverters entirely. Once power is restored, it typically reconnects on its own, but sometimes needs a manual restart.
Powerline communication glitches. Microinverters communicate with the gateway over your home’s electrical wiring. Certain appliances, electrical noise, or wiring configurations can disrupt that signal. This often affects only some panels rather than all of them, so you might see partial production data instead of none at all.
Hardware or wiring faults. Less commonly, a microinverter itself may have failed, or wiring between components may be damaged. If only one or two panels drop off while the rest report normally, a hardware issue with those specific microinverters is likely.
Your Panels Are Probably Still Working
This is the most important thing to understand: “no solar traffic” is a reporting problem, not a production problem, in the majority of cases. Your panels convert sunlight to electricity whether or not the monitoring system is online. The gateway’s job is to track and report that production, but it isn’t required for the panels to function.
That said, you do want to resolve the issue promptly. Without monitoring data, you won’t know if a genuine production drop occurs. And if the problem turns out to be a failed microinverter rather than a communication glitch, that panel truly is offline and you’re losing output until it’s fixed.
How to Troubleshoot at Home
Start with the simplest fixes first. Most “no solar traffic” alerts resolve without a technician visit.
- Check your internet connection. Confirm your home Wi-Fi is working normally. If you recently changed your Wi-Fi password or swapped routers, your gateway lost its connection and needs to be reconnected to the new network through the Enphase app or by plugging in an Ethernet cable directly.
- Restart the gateway. Locate your IQ Gateway (a small box usually mounted near your electrical panel) and unplug it for 30 seconds, then plug it back in. Give it 5 to 10 minutes to fully reboot and re-establish communication with your microinverters. This clears most temporary communication glitches.
- Check for power to the gateway. Make sure the outlet or breaker feeding the gateway is on. If there was a recent power outage or electrical work in your home, the breaker may have tripped.
- Look at which panels are affected. If your app shows that most panels are reporting but a few are not, the issue is likely isolated to specific microinverters rather than your network. Note which panels are offline so you can share that with your installer if needed.
After restarting the gateway, wait at least 15 to 20 minutes before checking your app again. The system needs time to poll each microinverter and upload the data.
When the Problem Is a CT Installation Error
Some “no solar traffic” or abnormal production readings trace back to the current transformers (CTs) installed at your electrical panel. These are small clamp-on sensors that measure how much electricity your panels produce and how much your home consumes. If they were installed incorrectly, your monitoring data will be wrong.
Each CT has an arrow indicating the direction of current flow. When clamped on backwards, it produces negative readings or wildly inconsistent data, which the app may interpret as no production at all. In homes with two-phase electrical service, the CTs also need to be matched to the correct phase. If they’re swapped, the power readings will be inaccurate even though each sensor is physically installed correctly.
CT problems require a qualified solar technician to diagnose and fix. You can suspect a CT issue if your system was recently installed or serviced, or if the production numbers in your app look clearly wrong (showing zero production on a sunny day, or consumption numbers that seem impossibly high or negative).
What to Do If Basic Troubleshooting Doesn’t Work
If you’ve restarted the gateway, confirmed your internet is working, and the error persists for more than 24 hours, the problem likely needs professional attention. Contact your solar installer or Enphase support with the following details: which panels or microinverters are affected, when the error first appeared, and whether anything changed in your home (new router, electrical work, power outage). This helps the technician narrow down whether the issue is network-related, a CT wiring error, or a failed component that needs replacement.
Most communication issues resolve with a gateway restart or network fix. Hardware failures are less common but do happen, particularly with older microinverters. Either way, the repair is typically straightforward and covered under your system’s warranty if a component has failed.