Power Calculators
There are several ways to determine your total power needs. Some companies use multiple methods to cross-check their numbers and ensure accuracy. Click here for examples of how
The Inverter Size Calculator is a valuable tool for determining the appropriate inverter size based on your power needs and electrical load. It is widely used in selecting inverters for residential, commercial, and solar applications, ensuring that the inverter's capacity matches the required energy demands efficiently.
By inputting your panel's rated power and number of panels, the calculator produces a recommended inverter power range that aligns with 80-100% of your system's total DC capacity. This approach ensures that your inverter is neither under-sized—risking energy losses and performance issues—nor over-sized, which can lead to unnecessary costs.
Here is our last bit of advice on how to select the correct inverter size: Check our inverter size chart. List all your appliances in the function of their power output. Apply our inverter size formula. Do not exceed 85% of your inverter's maximum power continuously. Oversize your inverter for extra appliances in the future.
I (A) = P (kW) × 1,000 V (V) The current I in amps is equal to the power P in kilowatts multiplied by 1,000 (to convert to watts), divided by the voltage V in volts. For example, let's find the current of a circuit with 1 kW of power at 120 volts. So, generating 1 kW of power at 120 volts will draw 8.33 amps of current.
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