Smart Plug Energy Monitor Not Showing Data

Identifying the Issue

If your Kasa Smart Plug with Energy Monitoring HS110 is connected and working but the energy monitoring data is not showing in the Kasa Smart app, you may see a blank or zero reading for current power usage, the runtime chart may not display any data, or the monthly and weekly energy reports may show "No data available." In some cases, the real-time power reading fluctuates wildly or shows implausible values. This is a separate issue from the plug not connecting — the plug itself may be functioning normally for on/off control while the energy monitoring feature is not reporting correctly.

Common Causes

Energy monitoring problems on the HS110 are usually caused by:

• The connected device draws very low power that falls below the HS110's measurement threshold
• The plug was recently reset or re-added, and historical energy data was cleared
• A firmware bug is preventing the energy monitoring chip from reporting data correctly
• The Kasa app cache is corrupted and displaying stale or blank data
• The plug's internal energy monitoring sensor has failed (rare hardware issue)
• The plug is offline or has intermittent WiFi, which prevents energy data from syncing to the cloud
• The device plugged into the HS110 is turned off, so the plug is measuring zero draw

Step-by-Step Fixes

1. Confirm the connected device is drawing power: Make sure the device plugged into the HS110 is actually turned on and consuming electricity. Devices in standby mode draw very little power, which may register as zero or near-zero in the app.
2. Test with a known high-draw device: Plug in a lamp or a fan — something with a clear power draw — and check if the energy monitoring displays data. If it works with the test device, the original device was simply drawing too little power to register.
3. Force close and reopen the Kasa app: Close the Kasa app completely (not just minimized) and reopen it. Navigate to the HS110's device page and wait 10 to 15 seconds for energy data to load. The real-time readings sometimes take a moment to refresh.
4. Clear the app cache: On Android, go to Settings, Apps, Kasa Smart, Storage, and tap "Clear Cache." On iPhone, delete and reinstall the Kasa app. This forces the app to fetch fresh data from the cloud.
5. Check the WiFi connection: Make sure the HS110 shows as "Online" in the Kasa app. Energy data can only sync when the plug is connected to WiFi. If the plug has intermittent connectivity, historical data may have gaps.
6. Update firmware: Go to the HS110's device settings in the Kasa app and check for firmware updates. TP-Link has released updates that specifically fix energy monitoring accuracy and display issues.
7. Power cycle the plug: Unplug the HS110 from the wall for 10 seconds and plug it back in. This reboots the internal sensors and WiFi module, which can resolve frozen or stuck energy readings.
8. Factory reset as a last resort: If none of the above works, hold the power button for 5 seconds to factory reset the plug and set it up again in the Kasa app. Note that this will erase all historical energy data.

When to Contact Support

Contact TP-Link support if the energy monitoring never shows any data regardless of what is plugged in, if the readings are wildly inaccurate (showing hundreds of watts for a small device or zero watts for a large appliance), or if the plug worked perfectly before and the energy monitoring stopped after a firmware update. These symptoms may indicate a defective energy monitoring sensor or a firmware issue that requires a specific fix from TP-Link. Reach out through the Kasa app or at tp-link.com/support.

Prevention Tips

To maintain accurate energy monitoring data, keep the HS110 connected to WiFi continuously so data syncs without gaps. Avoid frequent factory resets, as each reset clears all historical energy data. Regularly update the firmware when new versions are available. If you use the HS110 specifically for energy tracking, avoid moving it between outlets or devices frequently, as this can make the historical data confusing. For the most accurate readings, plug the HS110 directly into a wall outlet rather than into another power strip or extension cord, which can introduce small measurement errors.