The number of inverters you need depends on the size of your solar panel system and the DC power rating of each inverter. Typically, a typical solar panel system will be configured with an inverter with a power output rating of 3,000 watts. However, for some larger systems, multiple inverters may be required.
For example, if your solar panel system is rated at 12kW, you may need four inverters rated at 3kW to meet the needs of the system. To ensure that the number of inverters you choose is appropriate for your specific system, it is recommended to consult a professional solar technician or electrician.
Off-grid Solar Systems
If your system is off-grid, that is, it is not connected to the grid and only uses batteries to store electricity, then you can choose a suitable inverter according to your load power and battery voltage.
For example, if your load power is 1000W and the battery voltage is 12V, then you can choose 1 12V/1000W off-grid inverter, so that you can convert the DC power of the battery into AC power to power the load. If the total power of your solar panels is 3000W, then you can divide them into 3 groups, each group connects a certain number of panels in series, and then connect them in parallel to the DC input of the inverter. In this way, each group of solar panels only needs one-third of the inverter power, and one inverter can meet the demand.
Grid-tied Solar System
If your system is a grid-connected system, that is, it is connected to the grid and can sell excess power to the grid, then you can choose a suitable inverter according to the total power of the solar panels and the grid voltage.
For example, if the total power of your solar panels is 3000W and the grid voltage is 220V, then you can choose a 220V/3000W grid-connected inverter, so that you can convert the DC power of the solar panels into the same AC power as the grid, which will be measured and fed back through the meter. If the total power of your solar panels is 6000W, then you can divide them into 2 groups, each group connects a certain number of panels in series, and then connect them in parallel to the DC input of the inverter. In this way, each group of solar panels only needs half the power of an inverter.
Hybrid Solar System
If your system is a hybrid system, that is, it can operate both off-grid and on-grid, and can flexibly switch working modes according to actual needs, then you can choose a suitable inverter according to the total power of your solar panels, battery voltage and grid voltage.
For example, if the total power of your solar panels is 3000W, the battery voltage is 24V, and the grid voltage is 220V, then you can choose a 24V/220V/3000W hybrid inverter, so that in off-grid mode, you can convert the DC power of the battery into AC power to supply the load; in grid-connected mode, convert the DC power of the solar panel into the same AC power as the grid, and measure and feedback through the meter. If the total power of your solar panels is 6000W, then you can divide them into 2 groups, each group connects a certain number of panels in series, and then connects them in parallel to the DC input of the inverter. In this way, each solar panel only needs half the power of an inverter.
Don’t Know How Many Inverters You Need?
At Shielden, we provide high-quality inverters tailored to your solar needs, backed by a long-term warranty for your peace of mind. Plus, we offer free solar solutions to help you determine the right setup for your home.
