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Last Updated: February 25, 2025
Rooftop solar energy is becoming increasingly popular for St. Louis homeowners. A new solar energy system can help you add value to your property, provide a dependable source of power, and decrease your carbon footprint. Adopting solar energy can reduce your monthly energy expenses and shrink your carbon output. Before you get started, you want to make sure you find a qualified installer. Luckily, we've reviewed the options and assembled a guide to the best and most trustworthy solar installation companies in St. Louis.
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Reliable customer support
Free quotes
Clear pricing policy
Informative resources
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Our Rating
User Rating
Free quotes
Reliable customer support
Clear pricing policy
Informative resources
Services Offered
Our Rating
User Rating
Clear pricing policy
Prompt service delivery
Informative resources
Free quotes
Reliable customer support
Services Offered
Our Rating
User Rating
Free quotes
Clear pricing policy
Reliable customer support
Informative resources
Services Offered
Our Rating
User Rating
Free quotes
Informative resources
Clear pricing policy
Services Offered
Our Rating
User Rating
Informative resources
Clear pricing policy
Reliable customer support
Services Offered
Our Rating
User Rating
Free quotes
Informative resources
Reliable customer support
Services Offered
Our Rating
User Rating
Free quotes
Clear pricing policy
Informative resources
Services Offered
Our Rating
User Rating
Informative resources
Free quotes
Clear pricing policy
Reliable customer support
Services Offered
Our Rating
User Rating
Reliable customer support
Free quotes
Services Offered
Today's Homeowner looks at dozens of datapoints on solar companies to come up with our data-driven rankings. It's not possible for a company to pay for preferential treatment in our rankings. We look at the following key factors in determining who should top our list:
Going solar can be a great way to reduce electricity costs and help the planet by reducing your carbon footprint using renewable energy. Here are some key factors to consider when deciding if a solar installer is trustworthy.
Hiring a licensed solar installer is critical. This help guarantee that the work is done properly using current best installation practices. In Missouri, it's the responsibility of counties and cities issue contracting licenses. However, all contractors must register with the Missouri Secretary of State.
Check review sites like TrustPilot, the Better Business Bureau (BBB), and Google Reviews to see customer feedback about local solar companies. Detailed reviews can help you evaluate a company's reliability and customer service. Use caution with companies that have very few reviews or mostly negative ones.
To find a solar company that works with your budget, ask for free, detailed quotes from at least three providers. The quotes should list all costs as well as all solar equipment included. Comparing several quotes helps you identify the most cost-effective option.
Quality solar installations should have strong workmanship and performance guarantees. A workmanship guarantee addresses any installation defects (such as poor alignment, poor wiring, or cracks in the panels), while a performance warranty ensures a certain level of energy production. Strong warranties demonstrate a company's confidence in its work.
Switching to solar power can help reduce your energy expenses over time. Be sure to weigh these aspects when judging the cost and value of solar panels.
In St. Louis, solar panels cost an average of $3,370 per kilowatt, with an average system size of 7.2 kilowatts. The typical St. Louis homeowner spends $17,065 on their solar array after federal tax refunds. An estimate from a local provider will take into account additional information reflecting your desired system's panel type, size, capacity, and required preliminary work. In some cases, homeowners may prefer leasing solar panels to reduce upfront costs.
Incentive Type: PACE Financing
Incentive Amount:
Financing contracts limited to 20 years or less; improvements must display a positive economic benefit over the life of the contract.
Incentive Amount:
Water Heater: $50
Ground-Source Heat Pumps: $750/ton
Ground-Source Heat Pump Replacement: $150/ton
Dual Fuel Heat Pumps: $150/ton
Basement/Crawl space/slab insulation: 50% of installed cost
Advanced Thermostat: 50% of installed cost
Heat Pump Water Heater: 50% of installed cost
Window Air Conditioning: 50% of installed cost
Business Lighting Rebate: Varies, visit program website or contact utility for details
Incentive Type: Property Tax Incentive
Incentive Amount:
100% exemption
Incentive Amount:
Air-Source Heat Pump: $500-$900
Ductless Air-Source Heat Pump: $300-$500
Dual Fuel Heat Pump: $175-$200
Ground Source Heat Pump: $800-$2,000
Central Air Conditioner: $300-$500
Electronically Commutated Motor (ECM): $50-$100
Air Conditioner/Heat Pump Tune-Up: $75
Generally speaking, a solar photovoltaic (PV) system can be used to power any household system or appliance that uses electricity. In the smallest case, you can use a solar water heating system.
There are a number of benefits to home solar energy. You can save money, qualify for tax benefits, and raise your property values. With the right storage equipment, solar panels can also offer you additional energy security and offer some protection from power outages.
Yes. The grid in St. Louis already uses a large share of renewable energy sources, and you may be able to sell your excess generated energy to your utility for additional cost savings.
Your installer can give you an estimate of what your energy bills will look like after you install solar panels. Generally, your energy bills will decrease significantly because you'll be using energy from the sun for free, instead of buying energy from the utility company. The average annual savings in St. Louis amount to $1,260.
You might be pleasantly surprised at how quickly you can get a return on investment from your solar panels. The sun shines frequently in St. Louis, meaning your payback period could last 13.5 years per 5 kW of capacity on the high end.
Your recommended maintenance will vary based on the type of solar panels you have. With any system, you should clean and inspect each panel four times a year. Your solar installation company might offer comprehensive plans where they'll do the maintenance for you.
The answer ultimately depends on your specific situation. You can take advantage of a federal tax credit of up to 30% of the system's cost, as well as state or local incentives depending on where you are. As for insurance, you'll need to inform your insurance company about your new solar panels. Your premium may increase due to added property values, but you'll have peace of mind if a covered event happens to the system.
The most common types of home solar panels in St. Louis include monocrystalline, polycrystalline and thin-film. Monocrystalline panels are balanced and efficient, while polycrystalline and thin-film panels pair good performance with greater upfront value. Talk with your local provider about the types of solar panels they work with.
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