Building your own solar generator for off-grid power needs is an excellent way to have renewable energy available anywhere. With some basic electrical components and simple DIY skills, you can make your own solar generator to provide electricity when you need it. Here's a complete guide to building your own solar power generator with simple parts.

What You Will Need

To build a basic DIY solar generator, you will need the following components:

Sizing the Components

When selecting components, you need to consider:

As an example, a 300W solar panel, 100Ah battery, and 500W inverter would make a decent solar generator for basic off-grid needs like charging smartphones and running small appliances for several hours per day.

Step-by-Step Building Guide

Follow these steps to assemble your own DIY solar generator:

1. Mount the Solar Panel

Mount your solar panel on a stand or frame tilted at an angle facing direct sunlight. This allows the solar panel to capture the most sunlight and produce the maximum power.

2. Connect the Charge Controller

Connect the charge controller to the solar panel's output cables. Follow the charge controller manual and connect the solar input wires to the correct terminals.

3. Connect the Battery

Connect the battery's positive and negative terminals to the charge controller's output charging terminals. This allows the battery to receive the charging current.

4. Install a Fuse

Install a fuse between the charge controller and battery to protect from overcurrent. This prevents damage if there is ever a short circuit or overload.

5. Connect Inverter Inputs

Connect the battery's positive and negative terminals to the inverter's DC input terminals. This allows the inverter to draw power from the battery.

6. Connect Inverter Outputs

Attach AC outlet sockets to the inverter's 120V AC output terminal block. This creates output points to connect appliances and devices.

7. Install Switches

Install an inline switch on the positive wire between the solar panel and charge controller. Install another switch between the battery and inverter. These switches allow you to turn the solar generator on and off.

8. Enclose in a Box

Mount all the components in a plastic tool box or enclosure box to create a portable unit. Make sure to allow ventilation openings.

9. Test Connections

Check all connections to make sure wires are securely fastened to the correct terminals before powering up.

10. Start Generating Power

Place the solar panel in sunlight and switch on the solar generator to start producing power. Connect devices and appliances to the AC outlets as needed.

Usage and Maintenance Tips

Once your DIY solar generator is working, follow these tips:


Constructing your own solar generator with simple parts is a straightforward project that can provide renewable power anywhere the sun shines. Correctly sizing the solar panel, battery, charge controller, and inverter will give you an efficient system. Follow the wiring diagram carefully and take safety precautions. With some DIY skills and the right components, you'll have a reliable off-grid power source.