Solar Panel Cost Guide in O'Fallon, MO (2025 Update)
- O'Fallon Solar Installation Cost: $17,066
- 25-Year Savings: $16,170
- Payback Period: 14.6 Years
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Average Cost of Solar Panels in O'Fallon
Find out how much it might cost to switch to solar power in O'Fallon.
In O'Fallon, solar panels cost about 3 per watt on average.The average solar panel system size in O'Fallon is around 7.2 kilowatts, meaning a cost of about $17,066 for a solar installation, or $24,404 before the 0 federal solar tax credit is applied.
Keep in mind that the figures above are only estimates based on the average O'Fallon homeowner. The cost of a solar system for your home may be different depending on factors unique to your situation, like your household energy use and solar contractor.For most homeowners, the upfront cost of solar is worth paying. On average you could be looking at about $15,000 in savings on energy bills over 20 years.
You can click the button below to get connected with a pre-vetted solar installer in O'Fallon that can help you get a more accurate cost estimate for your home.
Solar savings over time in O'Fallon
| Year | Return on Investment |
|---|---|
| 1 years | $-15,776 |
| 3 years | $-13,194 |
| 5 years | $-10,613 |
| 7 years | $-8,032 |
| 9 years | $-5,451 |
| 11 years | $-2,870 |
| 13 years | $-289 |
| 15 years | $2,292 |
| 17 years | $4,874 |
| 19 years | $7,455 |
| 21 years | $10,036 |
| 23 years | $12,617 |
| 25 years | $15,198 |
Top Solar Installers in O'Fallon
Although it's possible to install solar panels yourself, it takes extra energy and handiness. That's one of the reasons the majority of homeowners choose to go with a solar panel installer. The expertise that solar companies offer can be helpful as well, particularly if you aren’t sure what kind of solar equipment would be right for your home.
Working with a vetted solar installer can help your solar project go smoothly. Here are our recommendations:
See all of the solar companies in O'Fallon
Factors that Affect Solar Panel Costs in O'Fallon
Although the average cost of a solar system in O'Fallon is $17,066, your actual cost may be higher or lower than that. There are many factors that can have a significant impact on the cost of a solar system installation. Below are some of the more crucial things to keep in mind.
Solar Equipment
Solar system size, which is measured in kilowatts, is one of the largest factors that determines the overall cost of going solar. For that reason, it’s important to accurately gauge the size of the solar energy system needed for your home by figuring out your typical energy use.The solar equipment you choose can bring your price up or down by thousands or even tens of thousands of dollars. If you opt for the most efficient solar panel brands, you’ll end up paying more upfront than if you opted for the most affordable panels. On the other hand, more efficient panels could save you more in the long run on your power bills. In addition, extra products, such as solar batteries, can bring your total well above the O'Fallon average.
Solar Financing Terms
Many homeowners find the average cost of solar in O'Fallon to be prohibitively expensive, even if the investment pays off over time. Fortunately, nearly every solar installer in the area provides access to financing options. Solar loans greatly decrease upfront costs for most homeowners, but they also result in paying more over time because of interest.You’ll have to consider the long-term cost of loans, including the total interest you’ll pay over the length of the loan. If you’re only able to get a high-interest loan, then your total can be hundreds or even thousands of dollars more than the principal cost. Making a larger down payment or getting a solar loan with a low interest rate could reduce your costs significantly.
Solar Panel Installation Company
Lastly, the company you get to install your solar panel system can affect how much you pay. O'Fallon’s solar companies all have different labor costs and add varying upcharges to equipment. The company’s size sometimes plays the most significant role in your total costs. Larger national companies, like SunPro and Sunrun, often have lower prices because they have access to greater resources and bulk pricing. Smaller local companies might be more costly, but they can sometimes have better customer service and more customization options, and the occasional sale or discount can bring their pricing down to compete with bigger companies.
Solar Panel Cost Data by System Size
| System size | Cost per system watt | Solar system cost | 25-Year savings | Payback period |
|---|---|---|---|---|
| 6 kW | $3.50 | $14,720 | $9,568 | 15.2 years |
| 8 kW | $3.44 | $19,249 | $13,135 | 14.9 years |
| 10 kW | $3.37 | $23,590 | $16,891 | 14.6 years |
| 12 kW | $3.30 | $27,742 | $20,835 | 14.3 years |
| 14 kW | $3.24 | $31,705 | $24,968 | 14.0 years |
| 16 kW | $3.17 | $35,479 | $29,290 | 13.7 years |
| 18 kW | $3.10 | $39,065 | $33,801 | 13.4 years |
| 20 kW | $3.03 | $42,462 | $38,500 | 13.1 years |
How to Save on Solar Panels
There are a lot of solar installers to choose from, all of which offer different warranties, solar panel models and price points. To help you find the right company for you, here are some tips to keep in mind:
- Reputation: Solar installers that have great reviews from their customers and that have been operating for many years most likely provide quality solar panel installation and expertise.
- Installation Process: Make sure you’re aligned with the company regarding how the installation process will go and what needs to be done before your solar system is installed, such as repairing your electrical system or roof.
- Solar Panel Brands: Homeowners will have different preferences for panels depending on their roof configurations and energy needs. While there are many options for which type of solar panel you can get, not every company will have access to the exact one you may want or need, so be sure to ask for their list of offerings before deciding.
- Warranty: Warranties that provide coverage for panel repairs and maintenance over a long period of time such as 25 years are the best you can get in the business, and offering such a warranty is one sign of a quality company.
EcoWatch's O'Fallon, MO Solar Cost FAQs
What is the average cost of installing solar panels in O'Fallon?
The average cost of solar panels in O'Fallon is about $16,850 for a 5-kW system and $33,700 for a 10-kW system before the ITC, but the actual cost will depend on certain factors such as the kind of solar panels you want, what size system you need and how much energy you use.
What other factors should I consider apart from cost when buying solar panels?
Cost is a crucial factor to consider, but whether it’s the most important for you depends on your reasons for going solar. In cities where rooftop space is limited, efficiency can trump the cost. Other factors that are important to think about are the quality and durability of your solar panels.
Can solar panels significantly reduce my energy bills?
It is possible to eradicate your electricity bills with solar panels, but for most homeowners in O'Fallon, that will require at least a 10-kW system. Not all homes will have roofs that can accommodate that size system, so you’ll want to check with a local solar installer to see how many panels can fit on your roof.
What solar power system size is right for my home?
The exact number of solar panels you need depends on your household energy consumption and how much sunlight your roof gets. You can take a look at your energy bills for the past year to get an idea of the solar system size you'll need. The average household has to install between 20 and 35 panels to cover their typical energy usage.
Our goal is to reach as many people as we can with sensible solutions like solar energy. Our team of full-time local researchers collects solar price and installation data for every city in America then compiles it to create these digestible city guides. If you want to read our solar expert's opinion on the top solar companies featured here, follow this link.