Energy Monitoring Incorrect
TP-Link Kasa Smart Plug
Severity:Note: This issue may not appear as a code on your device's display. This page helps you troubleshoot the underlying problem.
What Does This Error Mean?
Kasa smart plug energy monitoring showing incorrect readings is usually caused by using a non-energy-monitoring Kasa plug model, stale cached data in the app, or a firmware bug. Confirm your model has energy monitoring, then clear the app cache.
How to Fix It
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Confirm your model supports energy monitoring
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Clear the app cache and refresh
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Check whether the device under measurement is drawing power
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Update the Kasa plug firmware
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Reset the energy data log
Frequently Asked Questions
Kasa energy monitoring shows power use when nothing is plugged in — why?
A small amount of standby power (usually 0.5–1W) is drawn by the plug's own Wi-Fi and control circuitry. This is normal and expected. Readings significantly above 1W with nothing connected should be investigated.
Kasa energy data resets itself every month — is that normal?
Some Kasa models store a limited history and older data drops off automatically. The energy data visible in the app shows the current month or a rolling period — not unlimited historical data. This is by design.
Kasa energy reading shows a constant high watt reading — is the plug faulty?
A constant high reading (e.g. 1000W with a lamp connected) indicates a stuck sensor reading rather than a real measurement. Update the firmware and clear the energy data. If the problem persists after a firmware update and reset, the energy monitoring sensor has failed.