What is a solar inverter?

A solar inverter is a critical aspect of most photovoltaic (PV) power systems, in which energy from direct sunlight is harnessed by solar panels and transformed into usable electricity.

Is a solar inverter a type of converter?

A solar inverter is a type of converter, though the rules of physics may suggest otherwise. It converts or inverts the direct current (DC) energy produced by a solar panel into Alternate Current (AC), which is the type of energy most homes use. DC energy is not safe for use in homes.

How does a solar inverter work?

A solar inverter converts DC energy from solar panels into AC energy. In a standard string inverter setup, a string of solar panels forms a circuit where DC energy flows from each panel into a wiring harness that connects them all to a single inverter.

Why do we need a solar inverter?

Our homes and the electrical grid use AC power, so the inverter is essential for integrating solar energy into our daily use. Without a solar inverter, the energy produced by solar panels would be largely unusable for standard appliances and electronics.

Can solar panels work without an inverter?

Solar panels can work without an inverter if the devices they power use DC. However, to use solar-generated electricity for standard household appliances, which typically run on AC, an inverter is necessary to convert DC from the panels into usable AC.

Can I add solar panels later with a microinverter?

While it’s easier to add solar panels to your system later with microinverters, choosing the right string inverter before your installation is critical, as central inverter systems are typically built-to-suit without the capacity for expanded solar generation. Use our online tool to find the right sizes for your solar energy system components.