How do Grid-Tie Inverters differ from an Off-Grid Inverter?

Before getting into knowing the difference between grid-tie inverters and Off-Grid Inverters first let us get into the zone of inverters and find out what are Power inverters, split-phase inverters, and how they are used in the USA.

Power Inverter: It is an electronic device that converts direct current to alternating current. They are the most general form of inverters that are used in every household. It can also be used to operate all kinds of devices.

 

Split Phase Inverter: A split-phase inverter is specifically found in the USA and is a type of single-phase three-wire neutral power distribution system.

Now let us get to the main point of knowing the difference between the other two types of inverters. Grid-tie inverters are connected to mains power and supplements it. They work with mains to contribute energy wherever possible. They synchronize power delivery with grid power.  

On the other hand, an Off-Grid Inverter supplies power DC to AC in an instant to power the appliances. They are designed to work on their own and synchronize with the grid. It draws power from the battery and then converts from DC to AC.

One of the advantages of Grid Tie inverters over Off-Grid inverters are that they can derive power from the grid whenever it needs it because it synchronizes with the power delivery. There are solar grid-tie inverters that also derive power from solar when there is no electricity but the solar off-grid system might not be able to do so.

Off-grid inverters are generally larger than Grid-tie inverters as they are installed with a generator that can power them even when there is no current flowing. When coupled with a generator they tend to be more expensive as an off-grid inverter cannot work without a generator. 

Sometimes when the grid-tie goes down an external set of batteries can be added to make it off the grid so that the supply remains constant. Grid-tie inverters are generally considered in the USA because of their smaller size and dependability over off-grid inverters.

Which one to use whether grid-tied inverter or off-grid inverter depends on the user but somewhere expert opinion is utmost required. The experts at Power Jack Power inverter can help you out with the problem.