Enphase Monitoring Gap — Missing Enlighten Data Fix
Your Enlighten production graph has holes — hours or days of missing data where the system was generating but nothing was recorded. The Envoy lost its connection to Enlighten, either because the internet dropped, the WiFi signal is marginal, or PLC communication between the microinverters and the Envoy failed intermittently.
Monitoring gaps are usually a connectivity problem, not a generation problem — the system was producing but the Envoy could not upload the data. We identify whether the data can be recovered and fix the underlying communication issue.
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⚡ Safety Warning
Do not open your inverter or interfere with DC cabling. Solar panels produce live DC voltage whenever exposed to light. Always use your DC isolator switch and contact a qualified solar engineer for hands-on fault diagnosis.
6-step monitoring gap diagnosis
Work through these steps to identify why Enlighten is showing gaps in your production data and whether the missing data can be recovered.
Identify the pattern and duration of the monitoring gap
Log into Enphase Enlighten and open the production history graph. Switch between day, week, and month views to identify when the gap started and whether it is continuous or intermittent.
A single continuous gap — data stops at a specific time and does not return — means the Envoy lost its internet connection at that point. Intermittent gaps — data appearing for a few hours then dropping out again — suggest an unstable WiFi connection or a PLC communication problem.
Check whether all panels are affected equally. If all panels show identical gaps, the Envoy is the issue. If individual panels have different gap patterns while the overall system reports normally, the problem is at the microinverter communication level, not the Envoy internet connection.
Check Envoy internet connectivity status
The Envoy must have a stable internet connection to push data to Enlighten. Check the Envoy network LED — solid green means connected. If the LED is off or flashing, the Envoy has no internet.
Common causes of Envoy connectivity loss: router reboot or replacement, WiFi password change, Envoy moved out of WiFi range, ISP outage, or router firmware update that changed network settings.
The Envoy stores up to seven days of production data locally and will backfill Enlighten once reconnected. Data older than seven days during the outage is permanently lost.
Assess WiFi signal strength at the Envoy location
WiFi signal degrades through walls, floors, and distance. If the Envoy is in a garage, loft, or utility cupboard far from the router, the signal may be marginal — strong enough to connect intermittently but not reliable enough to maintain a constant data stream.
Access the Envoy local interface via envoy.local on your home network and check the WiFi signal strength. If the signal is weak or fluctuating, consider:
Ethernet is always more reliable than WiFi for the Envoy. If an ethernet port is available near the Envoy, this is the recommended permanent fix for intermittent monitoring gaps.
Check for PLC communication drops between microinverters and Envoy
Even when the Envoy has a stable internet connection, individual microinverters may fail to report if the powerline communication (PLC) signal is disrupted. PLC uses the AC wiring to carry data — electrical noise from other devices can interfere.
Access the Envoy diagnostics at envoy.local and review the communication status for each microinverter. If specific microinverters show intermittent communication while the Envoy internet connection is stable, PLC interference is the cause.
Common PLC interference sources include AFCI breakers, LED drivers, battery chargers on the same circuit, and long cable runs. An Enphase PLC bridge device or a communication filter on the offending circuit may resolve the issue.
Verify Envoy firmware is up to date
Older Envoy firmware versions have known bugs that cause intermittent reporting gaps. The Envoy should update automatically when connected to the internet, but the process can fail if the connection is unstable — creating a circular problem.
Check the current firmware version in Enlighten under the Envoy device details page. If the firmware is significantly out of date, a manual update via the Installer Toolkit app may be needed. Some firmware versions introduced improved PLC algorithms that resolved gap issues on affected systems.
Book a remote diagnostic if gaps persist
If the Envoy is online, WiFi signal is adequate, and PLC communication appears normal but Enlighten still shows gaps, the issue may be more complex — a failing Envoy, an intermittent router issue, or a PLC problem that only manifests under specific load conditions.
STS can analyse your Enlighten data history, correlate gap patterns with Envoy communication logs, and identify the root cause remotely. We also determine whether lost data can be recovered from the Envoy local buffer or whether it is permanently missing.
Why Enphase monitoring gaps matter more than they seem
A monitoring gap in Enlighten does not mean the system stopped generating — in almost every case, the microinverters continued producing normally and the house continued using the solar power. The gap is purely a data recording issue. However, monitoring gaps have real consequences that extend beyond missing graphs.
Feed-in tariff (FIT) and Smart Export Guarantee (SEG) payments rely on generation data. If your meter is estimated rather than read manually, gaps in Enlighten can make it harder to verify actual generation figures. Warranty claims for individual microinverters require production history to demonstrate the failure timeline — missing data makes the claim harder to support. And if you are trying to diagnose an underperformance issue, holes in the production data make it impossible to establish when the problem started.
The seven-day local buffer on the Envoy means you have a limited window to act. If you notice a monitoring gap within the first week, reconnecting the Envoy will recover the data automatically. After seven days, the buffer is overwritten and the data is gone. This is why persistent connectivity — ideally via ethernet rather than WiFi — is worth setting up properly from the start.
Common monitoring gap patterns and causes
Envoy lost its internet connection — router change, WiFi password update, or ISP outage. Reconnect the Envoy. Data within the seven-day buffer will backfill automatically.
Weak or unstable WiFi signal. The Envoy connects, uploads some data, loses the connection, reconnects, and repeats. Improve WiFi signal or switch to ethernet.
PLC communication issue between those specific microinverters and the Envoy. Electrical noise or long cable runs are interfering with the data signal. A PLC bridge may be needed. See also our panel not reporting guide.
This is normal behaviour — Enphase microinverters shut down at night when there is no solar production. The Envoy may also enter a low-power state. Gaps in the overnight hours are expected and do not indicate a fault.
The Envoy is still trying to connect to the old WiFi network. Reconfigure via the Installer Toolkit app or connect via ethernet. See our Envoy WiFi setup guide.
Enlighten monitoring gaps — common questions
Gaps are caused by a communication break between the Envoy gateway and the Enlighten cloud. The most common cause is the Envoy losing its WiFi or ethernet connection — after a router reboot, ISP outage, or password change. Other causes include weak WiFi signal, PLC interference preventing individual microinverters from reporting, or an Envoy firmware bug. The system continues generating normally during a gap — only the data recording is affected.
The Envoy stores up to seven days of production data locally. When the internet connection is restored, it automatically uploads the stored data to Enlighten. Data from the first seven days of an outage will appear after reconnection. However, if the Envoy was offline for more than seven days, data beyond the buffer is permanently lost and cannot be recovered.
After changing your router or WiFi password, use the Enphase Installer Toolkit app — connect to the Envoy's AP mode WiFi network (it broadcasts its own network when disconnected), then select your new WiFi and enter the password. Alternatively, connect the Envoy directly to the router with an ethernet cable. See our Envoy WiFi setup guide for full instructions.
A monitoring gap affects the entire system — all panels show missing data for the same period because the Envoy lost its internet connection. A non-reporting panel is different: the Envoy is online and most panels report normally, but one specific panel shows as grey because its microinverter has stopped communicating. A monitoring gap is a connectivity issue. A non-reporting panel is a microinverter or PLC issue. See our panel not reporting guide.
Connect to your home WiFi network and navigate to envoy.local in a web browser. The Envoy local interface shows WiFi connection status and signal strength. If envoy.local does not load, the Envoy may not be on your network at all. You can also check via the Installer Toolkit app by connecting to the Envoy's AP mode WiFi. If signal is consistently weak, use a WiFi extender or switch to ethernet.
Monitoring gaps you cannot resolve? We diagnose remotely.
We analyse your Enlighten data history, correlate gap patterns with Envoy communication logs, and identify whether the issue is WiFi signal, PLC interference, Envoy firmware, or a hardware fault — without a site visit first.