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10 Best Solar Companies in Lake St. Louis, MO

More than 130 people have received a free quote in the last 60 days.

Last Updated: February 25, 2025

A rooftop solar array will provide you with a renewable power source that will pay for itself in time. Solar power can reduce your energy costs and shrink your carbon footprint. However, it's important to choose a qualified solar installer. Luckily, we've done the research and compiled a guide to the best and most trustworthy solar installation companies in Lake St. Louis.

Advertisement This site receives compensation from some of the companies featured in this listing, which may impact where and how products appear. When you click "Get Quote," you will be connected with partners who may contact you with information related to your inquiry. This listing doesn't feature all companies, products, or offers that may be available.

Top 10 Best Solar Companies in Lake St. Louis

Advertisement This site receives compensation from some of the companies featured in this listing, which may impact where and how products appear. When you click "Get Quote," you will be connected with partners who may contact you with information related to your inquiry. This listing doesn't feature all companies, products, or offers that may be available.

SunSent Solar

SunSent Solar Logo

Our Rating

User Rating

1710 Scherer Pkwy, St Charles, MO 63303 (636) 757-3083 sunsent.com

Informative resources

Clear pricing policy

Reliable customer support

Free quotes

Services Offered

Cleaning and maintenance
Consultation
Skilled repairs
Battery storage
Panel installation
Financing assistance

Sustainable Solar

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Our Rating

User Rating

16226 Veterans Memorial Pkwy, Wright City, MO 63390 (636) 489-2700 sustainablesolarllc.com

Clear pricing policy

Free quotes

Reliable customer support

Informative resources

Services Offered

Skilled repairs
Off-grid solar systems
System decommissioning
Permit assistance
Panel installation
Financing assistance
Grid-tied solar system
Battery storage

Helio Solar Power, LLC.

Helio Solar Power, LLC. Logo

Our Rating

User Rating

119 S Main St, St Charles, MO 63301 (888) 424-3546 heliosolarpower.com

Reliable customer support

Prompt service delivery

Clear pricing policy

Informative resources

Free quotes

Services Offered

Solar carports
Panel installation
Cleaning and maintenance
Skilled repairs
Financing assistance
Battery storage

Astrawatt Solar

Astrawatt Solar Logo

Our Rating

User Rating

222 S Meramec Ave Suite 202-1100, St. Louis, MO 63105 (877) 937-4786 astrawatt.solar

Informative resources

Reliable customer support

Clear pricing policy

Free quotes

Services Offered

Permit assistance
Battery storage
Panel installation
Consultation
Tesla powerwall

StraightUp Solar of St. Louis

StraightUp Solar of St. Louis Logo

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User Rating

11696 Lilburn Park Rd, St. Louis, MO 63146 (314) 218-2663 straightupsolar.com

Clear pricing policy

Informative resources

Free quotes

Services Offered

Cleaning and maintenance
Financing assistance
Panel installation
Battery storage
Consultation
Grid-tied solar system

EFS Energy

EFS Energy Logo

Our Rating

User Rating

1283 Research Blvd, St. Louis, MO 63132 (314) 771-5131 efsenergy.com

Clear pricing policy

Informative resources

Reliable customer support

Services Offered

Cleaning and maintenance
Financing assistance
Consultation
Panel installation

Solar city stl

Solar city stl Logo

Our Rating

User Rating

3636 S Geyer Rd #100, St. Louis, MO 63127 (636) 515-4895 solarcitystl.com

Informative resources

Free quotes

Reliable customer support

Services Offered

Financing assistance
Consultation
Cleaning and maintenance
Permit assistance
Panel installation
Battery storage

Route 66 Solar

Route 66 Solar Logo

Our Rating

User Rating

2110 Troy Rd Suite B1, Edwardsville, IL 62025 (618) 900-1280 route66solar.com

Informative resources

Clear pricing policy

Free quotes

Services Offered

Panel installation
Grid-tied solar system
Financing assistance
System decommissioning

Purelight Power of St. Louis

Purelight Power of St. Louis Logo

Our Rating

User Rating

12747 Olive Blvd Suite 302, St. Louis, MO 63141 (314) 582-6129 purelightpower.com

Informative resources

Free quotes

Clear pricing policy

Reliable customer support

Services Offered

Financing assistance
Consultation
Permit assistance
Grid-tied solar system
Panel installation

Solar Luxury LLC

Solar Luxury LLC Logo

Our Rating

User Rating

11252 Midland Blvd Apt 106, St. Louis, MO 63114 (314) 337-7071 solarluxurystl.com

Reliable customer support

Free quotes

Services Offered

Off-grid solar systems
Panel installation
Consultation
Skilled repairs
System decommissioning
Today's Homeowner Ranking Methodology

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:

  • Company Experience
  • Real User Reviews
  • Company Reputation
  • Accreditations and Licenses
  • Service Area
  • Customer Service
Have questions about our methodology or company ratings? Reach out to FindAPro@TodaysHomeowner.com.

How To Choose a Solar Company

Putting solar panels on your roof could cut your electricity payments while helping the environment by reducing your carbon footprint through renewable energy use. Key considerations when researching local solar installers are as follows.

Check Licensing

It's important to hire a licensed solar installer. This help guarantee that the work is done correctly using the most up-to-date installation methods. In Missouri, it's the responsibility of counties and cities issue contracting licenses. However, all contractors must register with the Missouri Secretary of State.

Read Customer Reviews

Look at review platforms such as the Better Business Bureau (BBB), TrustPilot, and Google Reviews to find out what previous customers are saying about local solar companies. Reviews can give you an idea of a company’s dependability and customer service. Be wary of companies lacking reviews or with predominantly negative feedback.

Compare Multiple Quotes

To find a solar company that fits your budget, get free, detailed quotes from at least three providers. The quotes should outline all costs and list the solar equipment included. Looking at several quotes helps you identify the option that best fits your budget.

Ask About the Warranty

Quality solar installations should have strong workmanship and performance guarantees. A workmanship guarantee covers any installation defects (such as cracks in the panels, poor alignment, or poor wiring), while a performance guarantee ensures a certain level of energy production. Strong warranties demonstrate a company's confidence in its work.

Evaluate Financing and Incentives

Solar energy can help lower your energy expenses over time. Be sure to weigh these aspects when judging the cost and value of solar panels.

  • Look into utility rebates: Local power companies may have extra financial benefits to incentivize homeowners to install solar panels. Review the requirements to qualify and the rebate amounts with your local provider to calculate your potential savings.
  • Research federal and state tax credits: A 26% federal tax credit on total solar system costs is available through 2032. Many states also offer incentives. These credits can lead to substantial savings for solar buyers.
  • Compare system purchase options: Solar panels can be purchased upfront or financed over time with leases or loans. Confirm key financing details like annual percentage rate (APR), payment schedule, fees, and ownership implications when financing solar panels.

Cost of Solar Installation in Lake St. Louis

In Lake St. Louis, solar panels cost an average of $3,370 per kilowatt, with an average system size of 7.2 kilowatts. The typical Lake St. Louis homeowner spends $17,066 on their solar array after federal tax refunds. An estimate from a local provider will consider additional information reflecting your desired system's capacity, required preliminary work, panel type, and size. In some cases, homeowners may prefer leasing solar panels to reduce upfront costs.

Lake St. Louis Solar Incentives Guide

Incentive Type: Rebate Program

Website: powermoves.com

Incentive Amount:

Dual Fuel Heat Pump: $500
Variable Speed Pool Pump: $250
Air-Source Heat Pump: $250 - $750
Geothermal Heat Pump: $1,500
Heat Pump Water Heater: $400/unit
HVAC: Varies depending on ZIP code. See program website

Incentive Type: Rebate Program

Website: central.libertyutilities.com

Incentive Amount:

$0.25 per watt for systems operational between July 1, 2019, and December 31, 2023

Incentive Type: Property Tax Incentive

Incentive Amount:

100% exemption

Incentive Type: Rebate Program

Website: ameren.com

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

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 Type: Rebate Program

Website: cuivre.com

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: Personal Tax Credit

Website: ecowatch.com

Incentive Amount:

30% federal tax credit for systems placed in service after 12/31/2021 and before 01/01/2033. Good for: solar water heat, solar photovoltaics, biomass, geothermal heat pumps, wind (small), fuel cells using renewable fuels.

Frequently Asked Questions About Solar in Lake St. Louis, MO

A solar photovoltaic (PV) array can generate power to run any electric system or appliance in your home. More specifically, you can install a solar heating system for your water.

With home solar energy, you can recoup the cost of the system over time, lower your property's emissions, and gain additional energy independence.

It depends on your location and the kind of panels you plan to use. Since there's a moderate amount of snowfall in Lake St. Louis, your best time to install solar panels is in the spring and fall.

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 Lake St. Louis amount to $1,171.

You might be pleasantly surprised at how quickly you can get a return on investment from your solar panels. The sun shines frequently in Lake St. Louis, meaning your payback period could last 14.6 years per 5 kW of capacity on the high end.

The maintenance you'll need to do 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 contractor might offer comprehensive plans where they'll do the maintenance for you.

While solar energy might not be ideal for some in dark or wet areas, the latest generation of equipment and energy storage systems could increase your property's solar viability enough to achieve a return on investment. A contractor could also recommend a different primary source of renewable energy like wind or geothermal to boost your generation.

Other Lake St. Louis, MO Home Services