An electric curtain uses
approximately 20 to 40 watts; on average, it operates for about 1.5 hours a
day.
Enter the number of usage hours and power setting (in wattage), then click "Calculate"
to find the power consumption
of automatic curtain using 40 watts for 1.5 hours
a day at $0.12 per kWh. You will also see the running cost per hour, day, week, and year.