Use measured kilowatt-hours over a representative interval to estimate cost. One instantaneous watt reading does not tell you what a cycling device uses over a day.
Set up the test
Verify the exact Tapo model supports energy monitoring and that the load is within both products’ stated ratings. Choose a safe, ordinary load and record the interval start, end, and energy used. Keep the reading units explicit: watts measure power, while kWh measure energy.
Interpret the result
Multiply measured kWh by the applicable per-kWh rate from your own bill, separating fixed fees and variable or time-of-use rates as appropriate. Repeat on a typical day before extrapolating. This is a device-level estimate, not a prediction of the total utility bill.
Worked example
For illustration only, 0.6 kWh at $0.20 per kWh is $0.12 in energy charges for that interval. Substitute your own measured energy and rate rather than treating the example as a current price.
Documentation and next step
See the official documentation for supported settings. For a related decision, see tapo p110m matter control vs energy view.
