Ups Vs Inverter Vs Generator: Detailed Comparison

For homes, offices, or any other premises, electricity supply counts as an essential need, right? However, not even the richest countries of this world have a continuous power supply in all the areas.

Well, maybe you are from a place where electricity never goes out, but not everyone out there is as lucky as you since the majority of people still face this issue in their daily lives. Still, there is not much to worry about because we have several kinds of power backup options that can help us to use our home appliances even in the power outage situations.

These power backup solutions include UPS, Inverters, and Generators. But, do you know the differences between them? All these kinds of power backup options are meant for different purposes. So, if you often get confused between Inverter, UPS, and Generators, and want to know where they are used, you should give this article a thorough read.

What is an Inverter?

Inverters are the modern solution that we are using these days widely as a power backup. During Power Outages, inverters are highly useful as they are capable of giving power to all the lightings, fans, and even some basic home appliances like refrigerators, TVs, etc.

So, how does an Inverter function? Basically, it is a power backup machine that saves electric power in the form of DC, which is converted from AC by the inverter itself. So, when a power cut happens, the inverter uses the electric power stored in the batteries, turns it back into AC form, and provides us with electricity in our homes.

What is UPS?

As compared to other kinds of battery backups, UPS a.k.a. Uninterrupted Power Supply has a pretty different purpose. While other power backups are used to provide electricity in homes, UPSs are used to provide power to a certain appliance or machine for a short period of time, let’s say around 15-20 minutes on average.

Why are such devices used?

These are most widely used with computers so that you get a little extra time after the power cut off which you can utilize to save the files if you are working on something important. You can’t rely on inverters in this case as they generally have a little lag while shifting to its own power source.

Whereas, UPS works instantly and switches to the battery power without any lags. However, the working phenomena of UPS are quite similar to an Inverter as it also does the same job of turning AC into DC (but on a smaller scale) and storing the power backup for later use.

What is a Generator?

Generators are the first-generation solution for long power outages as these big machines are capable of providing power backup for quite a long time, that too on a large scale. While the other modern solutions store the power backup in the form of DC, generators provide us with electricity by powering up the AC mains directly.

The whole machine consists of a turbine, shaft, rotors, etc., which all work in coordination to generate electricity by turning the mechanical power into electricity. The source of mechanical power can be different as there are various ways to generate electricity. While some generators use the tidal forces, some use the forces of wind to run the turbine.

However, the most common that we see around us these days are diesel generators which use a diesel engine to produce mechanical power which is later on converted into electricity by the generator.

Difference between Generator, Inverter, and UPS: Comparison with table

So, as we have already discussed how these machines work and what they offer, we hope you are understanding them a lot more now. Hence, to clear more facts and to know more differences between the UPS, Inverter, and Generators, the following table is going to be quite helpful.

Stores Electric Power in DC formStores Electric Power in DC formProvides Power to AC mains directly
Offers backup to a single machineOffers backup to multiple appliancesOffers electricity supply directly to AC lines
Uses AC as the power source to charge the batteryUses AC as the power source to charge the batteryUses Wind Turbines, Water Turbines, Diesel Engines as Power source
No operational noiseNo operational noiseVery Noisy
Switches and Starts instantly and automaticallySensors detect the power cut, then switches to battery power automaticallyStarted Manually
Power backup lasts for about 15-20 minutesPower Backup lasts for about 6-8 hoursProvides continuous electricity till it runs.
InexpensiveModerately PricedVery Expensive


Wrapping up, we can conclude that all kinds of power backup devices are quite useful and meant for various purposes. UPS devices are generally very inexpensive and can help you save your work progress without letting the machine turn off suddenly in a power outage.

On the other hand, you don’t even have to worry about the power outage that much if you have an inverter installed in your home, you could still be able to use the essential home appliances for several hours.

However, if the power cut situations are pretty worse in your area, you are still left with the good old solution which is Generator which can offer a temporary electricity supply to your home for a longer duration.

Well, that’s it for this article, we hope now you understand the basic and key differences between an Inverter, UPS, and Generator after reading this article. In case you want to share your thoughts or have any queries, you can drop them down in the comments section too.