How to run a computer on solar power?

Our sun is boon for human being and it is powering the whole solar system using its energy. We can use solar power which is a free source of energy utilizing solar panels with a one-time investment to run a full-fledged computer system or charge laptops without paying hefty electricity bills to power companies. Sounds cool.

Rooftop Solar Panel Installation
Rooftop Solar Panel Installation

Computers vary in the amount of power they consume, as everything depends upon the hardware you use and what programs you are going to run. Based on my case, I am able to operate 550 Watts full fledge gaming rig using 1 kW solar panel.

Here is my system’s configuration:

  • Intel i7 7700 with Hyper 212 EVO Cooler
  • Gigabyte B150M Motherboard with 16GB of RAM
  • GTX 1050 Ti OC Edition
  • 1 SSD of 250 GB and 1 HDD of 2 TB
  • Cooler Master 550w SMPS

In all the practical situation I never touched that 550 Watts uses while intensive uses. On an ideal load, I was around 120 Watts and while gaming or editing it was just touching around max 300 or 350 Watts which is not so high.

So the answer is YES, we can operate a computer on solar power.

But before jumping to its advantages, also know its downsides too with some fixes we can use to ensure 27×7 electricity availability.

Solar panels do not produce electricity at night, even in foggy and rainy days output is lesser than what it produces in summer.

Keep in mind that not all the time solar panel is going to generate the same energy as advertised. Only on-peak hours (when the sun is on top) it generates its most possible energy and after that output gets less and lesser.

If you have sufficient budget then opt for mono-crystalline solar panels, they are little costlier and generates about 10% to 16% more energy over poly-crystalline in the same required area and work better in critical weather situations or low light situations.

You can mix-in both types of solar panels, make sure voltage and wattage are matching.

Check out this article for more in-depth know-how about the types of solar panels.

If we want to rely on solar power for full day as well as night too, then we’ll need to ensure 12 Volts battery backups with solar charge controller (if it doesn’t come with your panels) and AC to DC inverter (it gives you a standard household wall socket that you can plug the computer and other peripherals into).

We can use car and boat batteries as they work well, but you can even use a small lawn-and-garden battery to get started.

Also, we need to increase the solar panels to increase output; it is because while using the power at day we left with less power to charge the batteries. So we need to generate more electrical power than what we are going to use in the day time.

Now we have Solar Panels, Solar Charge Controller, Inverter and Battery. Now follow these steps to make the whole system.

Step 1

Fix solar panels on the rooftop or any open area where it is exposed to sunlight directly. Make sure you attach solar panels in a grid layout.

Step 2

After the whole grid connection, attach the solar charge controller which will ensure that panels never send too little or too much current to your battery, moreover it prevents the battery from discharging at night.

Step 3

After this, we need to attach inverter and batteries side by side. Follow the manual offered with the system for the connection guide. Also, make a note that the wire length between inverter and battery should be as little as possible, it is because that wire will be on constant load and length wires easily get wears out on moderate uses.

Step 4

Now in the inverter, you will have an output socket, from there you can use spy guard or make wall socket connection for computer connections.

Refer to this small diagram of the whole system that it should look like.

How to Run a Computer on Solar Power
How to Run a Computer on Solar Power?

Everything is just complete now. Now just make a test run and check if everything is working. If done correctly everything should work fine.

In case not then double-check if anything is missed or left loose.

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  1. Ramalingam Avatar

    Hi friend I had gone through your article, it’s good to do the project, can you explain thoroughly about the inverter please, it’s a little bit confusing. Thank you.

    1. Atul Kumar Pandey Avatar

      The inverter is like an AC DC converter that uses a battery to supply home use electricity. While charging the inverter will use solar panels’s DC current to charge the battery bank, similarly it converts DC to AC current and outputs to our home grid. You can use any branded inverter, I use Luminous and Microtek in my home.

  2. Ramalingam Avatar

    Thanks a lot for your kind reply friend.