Inverter, Power Inverter, or Uninterrupted Power Supply (UPS) is an electronic device that stores electricity in batteries to use it later when there is an outage. Inverters are useful when you live in a location with most power cuts and needed a 24×7 electricity supply.
If your monthly bills are making you worried then be clear here that it is common because you’re using the more electricity with inverters.
Let’s understand this scene through real-life examples.
Assume you are getting around 20 hours of electricity from the grid supply. The total downtime will be 4 hours.
In this case, your inverter will be backing up the downtime for those 4 hours and once there is a grid supply and it will charge itself again.
Here you are absorbing that 4 hours of extra required energy from the grid to the inverter to charge itself for any further outages.
Let’s say you live in an urban area, where power losses aren’t common. Once your inverter is charged fully, it is not going to discharge itself because when there will be no downtime why would inverter run.
Here you’ll see a negligible amount over your monthly bill. This is because batteries installed on inverter need a small amount of charge no matter whether you use it or not. This sustains the battery life.
I think you are clear here about why do inverters raise your monthly electricity bills while being used or not.