Solar Panel Cost Guide in Alton, IL (2025 Update)
- Alton Solar Installation Cost: $16,101
- 25-Year Savings: $13,045
- Payback Period: 16.3 Years
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Average Cost of Solar Panels in Alton
See how much it might cost to make the switch to solar in Alton.
In Alton, solar panels cost about 4 per watt on average.The average solar panel system size in Alton is around 6.1 kilowatts, meaning a cost of about $16,101 for a solar installation, or $23,024 before the 0 federal solar tax credit is applied.
The true cost of your system can be above or below the average in Alton based on a variety of factors, such as the model of solar panels you choose and the solar contractor you hire.For most homeowners, the upfront cost of solar is worth paying. On average Alton homeowners see about $15,000 in savings on utility bills over 20 years.
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Solar savings over time in Alton
| Year | Return on Investment |
|---|---|
| 1 years | $-15,250 |
| 3 years | $-13,549 |
| 5 years | $-11,848 |
| 7 years | $-10,147 |
| 9 years | $-8,445 |
| 11 years | $-6,744 |
| 13 years | $-5,043 |
| 15 years | $-3,341 |
| 17 years | $-1,640 |
| 19 years | $61 |
| 21 years | $1,763 |
| 23 years | $3,464 |
| 25 years | $5,165 |
Top Solar Installers in Alton
DIY solar panel installation is a choice some homeowners opt for, but it's an undertaking that can be a pain. Hiring a solar panel installer can make swapping over to solar power much easier. Local solar installers can also help you optimize your return on investment by assisting with any local incentives you can benefit from and by providing warranties and repairs.
There are a number of licensed solar professionals that can take care of your solar installation project. Here are our suggestions:
See all of the solar companies in Alton
Factors that Affect Solar Panel Costs in Alton
The cost of installing a solar system in Alton can vary by more than $10,000 from home to home. Your actual cost depends on several factors. The most significant one is your system size, and other factors include equipment choices, financing options and the solar installer you choose.
Solar Equipment
One of the most important factors to consider when it comes to the cost of adopting solar energy is the size of the solar system, which is measured in kilowatts (kW). The more electricity your household consumes, the larger your system will likely need to be. You can expect to pay about $3,760 per kilowatt in Alton.There are several different solar panel brands and the one you choose also changes the cost. Generally, the brands that are more efficient tend to also cost more. Additionally, the type of equipment you’re looking to install can affect your total cost. If you only need panels, your system will be much less expensive than if you also need solar batteries or an electric vehicle charger.
Solar Financing Terms
Most solar companies in Alton provide solar loans, which reduce the initial cost of installing solar.However, the interest on solar loans also increases your all-in costs, so it’s vital to consider that as well. You can always lower the total you pay in interest and in some cases even your APR by making a larger down payment.
Solar Panel Installation Company
The solar panel installation company you choose will play a role in your total cost to adopt solar energy. Different companies will charge different amounts for the equipment and labor.Some companies only sell products with high efficiency and therefore a higher price point — like Maxeon solar panels from SunPower or Tesla Powerwall batteries — so choosing those installers will generally come at a higher cost. It’s best to do some research and choose a company that has the products, warranties and services you want and also fit into your budget.
Solar Panel Cost Data by System Size
| System size | Cost per system watt | Solar system cost | 25-Year savings | Payback period |
|---|---|---|---|---|
| 6 kW | $3.91 | $16,424 | $7,837 | 16.9 years |
| 8 kW | $3.84 | $21,477 | $10,870 | 16.6 years |
| 10 kW | $3.76 | $26,320 | $14,115 | 16.3 years |
| 12 kW | $3.68 | $30,952 | $17,569 | 15.9 years |
| 14 kW | $3.61 | $35,374 | $21,234 | 15.6 years |
| 16 kW | $3.53 | $39,585 | $25,110 | 15.3 years |
| 18 kW | $3.46 | $43,586 | $29,196 | 15.0 years |
| 20 kW | $3.38 | $47,376 | $33,493 | 14.6 years |
How to Save on Solar Panels
The company that does your system installation will affect the warranties and brands you have access to, and it will also have an impact on your total cost. Since choosing a company can be a tough decision, we have some tips to help you, such as:
- Solar Panel Brands: Not all solar installers offer the same brands of solar panels, so the brand and type of panel you want can play a big role in the company you opt for.
- Installation Process: When going solar, it’s important to keep an open line of communication with your solar installer. See to it that you understand how the installation process will go and the project timeline.
- Contract: Before you sign a contract with a solar company, be sure to read it through fully so you understand the terms. Also, ask questions if you’re unsure about some of the terms, such as what the warranty covers and what services you can expect from them.
- Warranty: Warranties that cover replacement parts and repairs over a long period of time such as 25 years are the gold standard in the business, and offering that kind of warranty is one indication of a quality company.
EcoWatch's Alton, IL Solar Cost FAQs
How much does it cost to install solar panels in Alton?
This is a difficult question to answer precisely, because the cost depends on many factors. Generally speaking, it costs about $18,800 for a 5-kW system and $37,600 for a 10-kW system after the ITC is applied. It will be more expensive if you want additional solar equipment or more efficient panels, or if you have higher-than-average energy needs. On the other hand, you can spend less if you go with a smaller solar panel system or less efficient solar panels.
Should I lease or buy solar panels in Alton?
Leasing solar panels can be an attractive choice, as it commonly comes with low or $0 upfront payments. The downside is that you won’t be able to save as much. If you lease, you don’t own the system, so you can’t claim any incentives and your home value won’t increase. Buying solar panels is a better option if you want to get the most savings.
How will solar panels impact my home value?
Solar panels can increase the value of your home considerably as long as you buy or finance your panels and don’t go for a solar lease or power purchase agreement (PPA). According to research done by Zillow, the average home value increases by about 4.1% after installing a solar system."
How long do solar panels last in Alton?
Though the average lifespan of solar panels is 25 to 30 years, that doesn't mean they should be disposed of at that time. What this means is the amount of energy they produce will have decreased significantly after that point. You can replace them once you've had them for that long or you can keep using them at a lower efficiency.
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.