It is possible to DIY solar panels for your home—here's how
A handmade approach to creating renewable energy
Recommendations are independently chosen by Reviewed’s editors. Purchases you make through our links may earn us a commission.
As the technology increases in efficiency and decreases in cost, solar energy becomes more and more affordable every year. However, powering your home with the sun can still be an expensive renovation, and many homeowners try to offset that cost by designing and installing the solar panel system themselves. While this is certainly doable, depending on where you live and what you’re trying to build, there are many variables to consider and understand before you begin.
Do you have the necessary skills, experience, and understanding?
Installing a solar panel system can be a complex undertaking. There are numerous consequences of incorrect installation, including the power simply not working, leaks in your roof, or even an electrical fire. You need a clear understanding of both electrical systems and how to physically install a large, heavy structure either on your roof or on the ground.
Before you get too far down the path of installing a solar panel system yourself, be honest about whether you have the skill set required and the willingness and time to learn how. Or bring in a professional who does. After all, it’s typically more expensive to bring someone in to fix a project than to bring them in to do it right the first time.
Research the specific requirements for your type of system
Depending on the kind of solar panel system you’re installing and where you live, there are different regulations, permitting, and inspection requirements. In many areas, installing solar on a home that remains connected to the grid comes with stringent rules for both the plan and the installation, including coordination with your utility company.
If you’re installing an off-grid system, such as to an outbuilding, cabin, or RV, then the requirements are likely far less demanding, though you likely still need permits and inspections. Before you dive into detailed planning for your project, reach out to your local building department and find out exactly what requirements have to be fulfilled with your type of system.
Not all solar panels are created equal
When looking into the hardware itself, it can be tempting to save money with the cheapest panels available. However, the purchase price doesn’t always tell the whole story in terms of affordability. First and foremost, consider the durability of the panels. Does the company have a reputation for long-lasting systems, and do they have a warranty to back that reputation up? If you have to replace the system after 10 years when a slightly more expensive system would have lasted 25 years, you didn't save any money.
The second consideration is the efficiency of the panels. The more efficient, the more power you’ll generate, and the more of your electrical costs you’ll offset. Those costs add up over the life of the system. A 10% lower installation price might be negated by the increased energy production associated with higher-quality panels.
Be aware of hidden costs
Don’t overlook the costs above and beyond the panels, rails, wires, and batteries that come with installing a solar panel system. For example, if you install a new solar panel system on the roof, you may need to reinforce the underlying structure. Before you begin, make sure that the roof shingles are relatively new, or plan on the expense of removing the system to install a new roof a few years down the road.
Another consideration is making sure that your system sits in as much sunlight during the day as possible. This may mean taking down some trees, which can cost thousands of dollars if you need to bring in a professional. Other extra costs might include upgrading your electric panel, keeping them snow-free in the winter, and dealing with potential damage.
Consider battery storage
Solar panels only generate power when the sun is shining. When installed on your home, a dip in sunlight usually isn’t an issue when you’re connected to the power grid, and you can just draw from that power overnight or on dim, cloudy winter days. However, if you’re using solar in an off-grid installation, such as a cabin in the woods, then you need to figure out how to get power when the sun isn’t out.
A simple solution is a gasoline-powered generator. However, there are also numerous options for battery storage. The solar panels charge the batteries during the day with the excess power generated, and then you can draw from those batteries overnight. Battery systems are a fantastic complement to a solar setup but may come with installation complexities and a specific set of regulations and building codes to know.
When in doubt, bring in a professional to help
Sometimes you can’t do every step of the process yourself—and indeed, there are certain situations where you may not legally be allowed to do all of the work yourself. You don’t have to hire a company to take on the whole project or do it yourself. Many professionals can come in at various steps to help you with planning, installation, or navigating the regulatory and code framework. If a part of the process seems too far outside your wheelhouse, reach out to a professional for help.
After all, you don’t save any money if you install a solar panel system that doesn’t ever work.
Prices were accurate at the time this article was published but may change over time.