DIY Solar Panel Installation Guide

DIY Solar Panel Installation

Did you know you can install a DIY solar system on your home in as little as a weekend?

When people think about going solar, the first thought is to turn to a full-service residential solar installer design and build their system. Some don’t realize that DIY solar installation is also possible.

But a DIY solar panel installation can save you thousands of dollars in installation costs, cutting years off your payback period. If you are comfortable with climbing on your roof and capable of wiring a household electrical socket (or at least willing to learn how), then you’ve got what it takes to install your own solar system. Two people can install a solar panel kit over the span of 1-3 weekends.

DIY Solar Panel Installation

So what does it take for a DIY solar panel install? Here’s a quick overview of the process:

Note that when you buy a solar panel kit from GoGreenSolar, we provide a detailed step-by-step DIY solar panel installation guide to walk you through everything. You also get full phone and email tech support from our team of engineers.

Read: The Complete DIY Solar Installer Tool List

Racking Installation

  • For Roof Mounts

For roof-mount kits, the first step is to mark the location of your roof rafters. These support beams will act as the foundation for your solar array. If your rafters aren’t visible from the outside, you can buy a stud finder or measure their location from the inside of your attic. Once you locate your rafters, mark them with a chalk line to visualize the layout for your racking rails.

Once everything has been measured, you can bolt your flashings to your rafters at the marked locations. A flashing is a thin sheet of material that prevents leaks and provides an attachment point to mount your racking rails.

Once the flashings are set, secure the racking rails by bolting them to the flashings. At this point, your roof will look something like this:

Learn more: 33 Tips For Installing Mounting Rails

 

  • For Ground Mounts

Ground mounts are a bit different from roof mounts. Because there are no roof rafters supporting the weight of your solar panels, you’ll need to build a standalone metal foundation to support your array.

(Due to high freight costs, we don’t include these in our ground mount kits. It’s best to source the metal pipes from your local hardware store).

Before you can build your support structure, you’ll need to dig holes at least 18” deep and pour concrete footings to anchor the structure to the ground. Once the base poles have been placed in concrete, you’ll need to wait at least a week to allow it to fully dry and set.

Ground mounts also require your wiring to be buried underground to comply with the National Electrical Code (NEC). It’s wise to rent machinery that can dig trenches and anchor holes to speed up this process.

Once the metal substructure is built, the rest of the process is the same as with roof mounts. You’ll secure your racking rails to the support structure, which provides a foundation for your panels.

More Resources:

Inverter Installation

If your system uses microinverters or PV optimizers, these small units will need to be screwed on to the back frame of your solar panels before installing the panels on your mount. Make sure the units are wired first, as the connection points won’t be accessible once the panels are mounted in place.

String inverters should be wall-mounted in an easily accessible location, like the side of your house, or the back of a ground mount structure. Inverters should be mounted as close to your solar panels as possible for a more efficient and cost-effective wiring run.

Here are a few Tips on How to Install a Solar Inverter

Solar Panel Installation

Once the racking has been built, installing solar panels is fairly straightforward by comparison. There are mounting holes on the back of the panels, which line up to bearing points on your racking. If your racking is properly spaced according to your planset, it is simply a matter of aligning the panel’s mounting holes close to the rail bearing point and bolting them down.

If you are installing panels on your roof, be sure to hook up the connecting wires before bolting the panel to the racking rail, as the connections will be inaccessible once the panel is installed in place.

Learn more: The Best Angle to Install Solar Panels

Once the panels have been secured to the mount, the final installation step is to wire the system components together according to your planset. The wires from your inverter(s) will be routed through a junction box and a PV disconnect switch, before finally terminating at your home’s circuit breaker box that connects your system to the grid.

Learn more: Solar Panel Installation Tips for DIYers

Ready for a DIY Solar Panel Installation?

While this is a fairly oversimplified overview of the DIY solar installation process, it should give you a sense of the physical requirements of installing solar and help you decide whether DIY solar is right for you.

Should you choose to move forward with a self-installed system, we’ll provide a detailed Custom Installation Guide with your solar kit that walks you through every part of the installation process step-by-step.

Interested in DIY solar? Check out our solar panel kits or reach out to us for a free solar panel analysis & layout design for your home.

Solar Calculator

How much do solar panels cost? Use our easy solar panel calculator to get a quick estimate of how many solar panels you’ll need for your home.
Size My Solar System

Free Solar Roof Layout

Our engineers use state-of-the-art software to conduct a PV analysis and draft a free layout of solar on your roof, included with our complimentary quote.
Get My Free Layout

Get Started
With Solar

We'll help you figure out your solar needs!

Fill out the form for a complimentary solar panel quote that includes a custom solar panel layout using satellite technology and a breakdown of solar energy production, federal tax credit and energy offset.