Solar Voltage Calculator
Calculate the voltage of a solar panel string (series connection).
About the Solar Voltage Calculator
The Solar Voltage Calculator gives you a clear, instant answer to a question that usually means digging through tables or guessing — enter your numbers and read the result straight away.
The inverter is the heart of a solar system — it converts DC power from panels and batteries into the AC power your appliances use. This Solar Voltage Calculator sizes the inverter from your peak simultaneous load.
The calculation matches the inverter's continuous rating to your running load, with headroom for surge loads like refrigerators and water pumps that draw more at startup.
In Pakistan, hybrid inverters combine solar, battery and grid input, letting the system switch seamlessly between sources. Sizing must consider both the solar array and the loads it powers.
A common mistake is matching the inverter to the solar array only, ignoring the load. If your peak load is 4 kW, a 3 kW inverter will trip regardless of how many panels you install — size from the load.
Use the Solar Voltage Calculator as often as you like — it is free, needs no account, and pairs well with the other calculators in this category for a fuller picture.
How to size a solar inverter
- 1
Enter your peak simultaneous load in watts or kW.
- 2
Add margin for surge loads from motors and compressors.
- 3
Read the recommended inverter rating, updated live.
Frequently Asked Questions
How many panels can I put in series?
Multiply panel voltage by the count and keep the total under the inverter's max input voltage. Ten 41.5 V panels = 415 V string.
How do I choose between a 5 kW and 10 kW inverter?
Match the inverter to your peak load, not the panel count. A home with two ACs needs a 8–10 kW hybrid inverter; one without ACs may manage on 3–5 kW. This calculator sizes from your actual load.