In this project I will show you how I combined a 100W solar panel, a 12V 100Ah battery, a solar charge controller, an inverter and many complementary components to reconstruct the electrical wiring inside my garage and create a photovoltaic off-grid system. Let's get started!

Step 1: Watch the Video!

The video gives you all the information you need to create your own photovoltaic off-grid system. During the next steps though I will present you additional information to make the project easier to replicate.

Step 2: Order the Components!

Here you can find a parts list with example sellers.

Home Improvement Store:

NYM-J wire, JY(St)Y wire, LS-FL wire, wire clips, M16 installation conduit, junction boxes, light switch, sockets, wago terminals


100W Solar Panel: http://amzn.to/2sH5bMa

Solar wire + MC4 connectors: http://amzn.to/2rKdC4a

Solar Charge Controller: http://amzn.to/2sM8qBu

12V 100Ah Battery: http://amzn.to/2sGRQmT

Battery terminals: http://amzn.to/2sHedbM

Inverter: http://amzn.to/2sM6pW7

Reed switch: http://amzn.to/2sMqQC3

LED strip: http://amzn.to/2rtg8wo


100W Solar Panel: http://amzn.to/2rK1YXd

Solar wire + MC4 connectors: http://amzn.to/2soYg7p

Solar Charge Controller: http://amzn.to/2soVeA5

12V 100Ah Battery: http://amzn.to/2tBrTS3

Battery terminals: http://amzn.to/2sozvbp

Inverter: http://amzn.to/2tBqQSo

Reed switch: http://amzn.to/2tBxdVL

LED strip: http://amzn.to/2soZy2d

Step 3: Do the Wiring!

Here you can find the wiring plan along with reference pictures of my setup. Feel free to recreate my wiring but be careful when working with the inverter output since it can create 230V AC. And if something like this is your first electrical wiring project then it is always a good idea to get some help from a professional because a faulty wiring can lead to a fire hazard and other problems.

Step 4: Success!

You did it! You just created your own photovoltaic off-grid system!

Feel free to check out my YouTube channel for more awesome projects:


You can also follow me on Facebook, Twitter and Google+ for news about upcoming projects and behind the scenes information:



<p>tengo un sistema similar, con 13 luminarias led de 9watt a 12v, panel de 100 watt, sin inversor, llevo 3 a&ntilde;os y no tengo problemas si utiliza bombillas fluorescentes estas realizan un arranque en alto voltaje lo que hace que se utilice la bateria en extremos cada vez que prende una lampara.</p>
<p>'d be interested to hear your thoughts on how I could achieve these same results but without the battery. Using a 12v panel to directly power the 12v LED's when there was enough sun to do so, and as the sun sets, have them gradually dim until they turn off. A &quot;solar skylight&quot; type of setup.I imagine it would be easy to destroy the led's with high amperage if it was not done properly. There are many people here who know more about electricity than I do, so I figure I'd ask.</p>
<p>Its also very expensive . $250 for an AGM battery so better to go to a lithium . Your solar panels are too expensive in the states . We buy them for 50c a watt in Australia now . better to get a 1000 watt inverter and be able to run a small drill as well</p>
<p>he is from GERMANY</p>
A 100Ah lithium battery is far more expensive than AGM. Like in the 1000 dollar range.
<p>I built a similar system would love to know how to remote monitor.</p><p>The Bluetooth module is not listed in your parts list, can you provide a source? I was using an inverter but opted to go with a full 12v system to get longer run time since the inverter was costing me efficiency and it made a lot of noise. I am powering 10 LED lights, and a bluetooth music system.</p>
V.E direct smart bluetooth dongle
<p>Your circuit applies 12 Volts to each LED . Is this just a mistake? </p>
<p>I've had several years experience working with a very similar system <br>and using 12V LED lights is much more energy efficient. I've also had <br>several batteries fail to such an extent that they cannot power the <br>inverter for more than 15 minutes because of hard use however they can <br>still power LED lights for more than 8 hours!</p>
It's probably too smaller batteries for the loading, so the batteries fail, maybe not the inverter.
<p>They are not just simple LED. That are LED-Stripes which are constructed for use with a 12Volt supply.</p>
I would probably leave the voltage at 12v instead of converting it if all you want is light. Plenty of 12v led lights that will allow for less power drain on battery
Definitely, all sorts of things run off 12V these days. More efficient and safer.
I don't mean to pick (sorry, solar is my job :) you shouldn't run a 400W or larger inverter off the load output of the solar controller which is rated at 20A. 400W continuous inverter might surge to 800W, which is 66A from the 12V supply. <br><br>A 100Ah battery won't reliably run an inverter over 240W.<br><br>Re an earlier question, house mains sockets at 240V are rated at 10A typically. That's 2400W for one outlet... Don't even think about wiring a 600W or 400W inverter to this, it will end in tears! Use appropriate circuit breakers or fuses.
Thank You for your help :)
<p>Since you say that this inverter will output 230 volts, can it be used to power a household through the fuse panel in the house?</p>
Yes it can. It is very dangerous to do that because of possible back feed ether way to electric lines outside. Also depending on the inverter and battery your power supply is very limited
Can you explain the proper sequence for connecting everything?<br>#1 Solar<br>#2 Battery<br>#3 Charge Controller<br>I have heard that you have to do it in the proper sequence..???<br>Thank You
<p>The general safety principle is to work from the load back to the power source. This avoids the risk of live wires shorting out and causing fires or killing people. Basically, make (and check) all connections with the power source disconnected.</p>
<p>So, if I understand correctly. I would cable the batteries, then run to the mppt and then connect with the panels?</p><p>Thanks in advance for your help.</p><p>Floyd</p>
You would start at the lights or whatever you are powering and then connect your switch, then battery then charging system, then solar panels
<p>Great project, I like how you added the inverter so you get 220V.</p>
Yes they make ac120 and ac220 converters that will allow for household plug style use. Be aware that the wattage output vary from low cost inverters to high cost inverters so you might not be able to run a fridge or a heater but you can run a led tv or video game for awhile
<p>Good project!</p><p>I see that your charge controller is a fused one. I have come across several that are not fused so it is a good idea to include a fuse in your battery supply line if that is the case. Personally I would find it handy on your drawing to note that the reed switch is activated by the door. </p>
<p>Very neat installation. Well done and thanks for sharing!</p>
<p>Using this alongside a small wind turbine would be great </p>
awesome project!. will make my DC power supply for my projects arduino etc. Remote Green electric power supplies.
remote areas for weather logging.

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