Why a Solar Panel Voltage Calculator?
A solar panel voltage calculator is an important tool to ensure a solar power system will function correctly at any temperature it may encounter. This is due to the fact that the voltage from solar panels changes with different temperatures, and it’s very important that an inverter or charge controller the solar panels are connected to can handle the voltage at any temperature the system may experience. If the voltage is too high it could blow up your expensive electronics, too low and it just won’t work. Knowing the range of voltages you can expect the solar panels to produce allows you to avoid some potentially costly mistakes!
Solar Panel Voltage Calculator – The Information You Need
- Solar panel open circuit voltage (Voc)
- Solar panel maximum power point voltage (Vmpp)
- Solar panel temperature coefficient of Pmpp
- Solar panel temperature coefficient of Voc
On the REC TwinPeak 2 datasheet to the right we’ve highlighted the applicable information for the REC TwinPeak 2 295W solar panel. The information from this panel is entered into the calculator below as an example.
We’ll also need some site-specific temperature information, particularly the following:
- Annual site minimum ambient temperature
- Annual site maximum ambient temperature
Add to this the number of solar panels you intend to connect together in a series string and we have all the information we need! Just enter the information in the calculator below and it’ll spit out the maximum and minimum voltages you can expect from your solar power system.
Please use this solar panel voltage calculator as a guide only, if the inverter or charge controller manufacturer have their own calculator or design tool please check the suitability of the proposed array with that.
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