Kilowatt is a unit of Power. Kilowatt-Hour is a unit of Energy. Energy is power over time. Most home energy bills are in Kilowatt-Hours. So the Kilowatt-Hour (kWh) is, in essence, a measure of total energy you use over a specific period of time, not at a given moment.
Most devices are rated in Watts, or what they draw at a moment in time. Total usage depends on how long the device powered on and what mode is in use. Most electricity bills are based on kWh used. Electricity rates vary by location and provider. Below is the estimated calculation for kWh that the Molekule Air and Molekule Air Mini use in each mode by day, month and year.
Energy consumption for both Molekule Air Pro, Air, Air Mini, and Mini+ in standby mode is less than a Watt from your AC power source.
Molekule Air Pro
Molekule Air Mini and Mini+