Free Sun Power shining on Solar panels generates free energy by converting sunlight to electricity with no moving parts, zero emissions, and no maintenance Free tutorials, interactive online Design Tools and a Solar Power Simulator at

Run your own Solar Energy System! 5 Meters display charging, power, voltage, & more. Watch the power change as you turn appliances on/off.

Details of the Solar Energy System used in this small, energy efficient, earth sheltered home.

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Solar Energy Systems wiring diagram examples
Click the 3 buttons below for examples of typical wiring layouts and various components of solar energy systems in 3 common sizes: 2 KiloWatts, 4 KiloWatts, and 8 KiloWatts. These system sizes are based on 100 watt solar panels and 5 hours of average daily sunshine. This is explained in greater detail in our tutorial on Solar Radiation. Of course, under actual operating conditions a solar power system does not produce full output every day.
These diagram examples could represent 12, 24, or 48 volts systems. The basic wiring configuration would be the same for any voltage system. These diagrams are meant to give a general idea of typical system wiring. Certain grounding and fusing circuits have been omitted from the wiring diagrams for clarity. (click here to center the diagram)
Example circuit diagrams of Solar Energy Systems
* Note: based on 100 watt solar panels and a 5 hour solar day.

DISCLAIMER : Alway make sure that all of your equipment is properly fused and grounded for safety. Also, be sure to read and follow the advice and instructions that come with your equipment. These example diagrams, while reasonably accurate, are not meant as a substitute for the recommendations of a licensed electrician. These examples are a guide only and are meant to demonstrate how typical system components are connected together.

Design your system quickly with our Interactive Design Tools
(Note : These design tools require javascript to be turned on in your browser)
* Check out our easy point & click System Sizing Estimator to quickly & easily calculate the number of solar panels and storage batteries you'll need for a wide range of system sizes.
* Our Battery Bank Design Tool will take the confusion out of wiring up your battery bank. Use 2, 4, 6, or 12 volt batteries to build a system voltage of 12, 24, or 48 volts using series and parallel wiring with just 4 clicks. Battery bank capacities from 300 AmpHours to over 4000 AmpHours are displayed graphically so you can see exactly how to wire the batteries together.
* This Wire Size Calculator will allow you to quickly find the correct wire size in AWG (American Wire Gauge) based on the distance to your solar panel array & the amount of amperage your panels put out. No math required!

New Feature!  Check out our new feature Solar Projects where you can build easy, do-it-yourself projects for your solar power system to save money and have fun doing it!

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