Solar Array Calculator
Now that you've seen in our solar panel array guide where the calculations come from, we've distilled all of that, and more, into our convenient solar panel array calculator. To find out more about each parameter and calculated value, hover over each name to see more details.
Use this calculator with actual solar panel values and prices to find out what panel options provide the best total system value for your needs. The lowest-price individual solar panel may not provide the lowest overall system cost.
Note #1: The solar panel specs are derived from the manufacturer's data sheet. Open-circuit voltage and short-circuit current are to be entered exactly as found in the datasheet. These should be the 1000 W/m2 rating.
Note #2: The solar panel specs are derived from the manufacturer's data sheet. Maximum power voltage and current must be derated to obtain the nominal operating cell temperature (NOCT) conditions, typically given as a 800 W/m2 rating. If the derated NOCT voltage and current data is given, provide these values in the maximum power voltage and current fields and then set the respective derating factors to 1. Otherwise, enter the non-derated voltage and current, then apply a suitable derating factor (typically 0.9 and 0.8, respectively) to obtain the NOCT power specification.
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Posted: 12 Nov 2015