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Best 5 Solar Companies in St. Louis, MO

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Written By Max Peterson|Last Updated: April 18, 2024

With St. Louis' clear skies and little rainfall, it's an excellent area for families and businesses aiming to harness the additional sunlight by purchasing panels from one of the best solar installers. While embracing solar power comes with upfront costs, local homeowners could ultimately save $870 per kilowatt on their electric bills. A professional installation team can help you choose the best panels to maximize your savings. Discover St. Louis' best solar companies and learn crucial decision-making strategies on this page.

Best High-Efficiency System
4.8
  • Builds custom, high-efficiency solar systems suited to each home
  • Extensive coverage area throughout the country
  • Offers energy storage and EV charger add-ons
Most Reputable
4.4
  • Offers high-efficiency panels and storage options
  • Provides unique in-house financing options
  • Recognized as one of the most reputable solar companies

Top St. Louis Solar Companies

Astrawatt Solar Logo

Astrawatt Solar

4.7/5
Based on 35 customer reviews.

Services Offered

Battery StoragePanel InstallationConsultationTesla PowerwallPermit Assistance

Highlights

  • Clear pricing policy
  • Free quotes
  • Informative resources
222 S Meramec Ave Suite 202-1100, St. Louis, MO 877-937-4786 astrawatt.solar
EFS Energy Logo

EFS Energy

4.4/5
Based on 31 customer reviews.

Services Offered

Cleaning And MaintenancePanel InstallationConsultationFinancing Assistance

Highlights

  • Informative resources
  • Free quotes
  • Reliable customer support
1283 Research Blvd, St. Louis, MO 314-771-5131 efsenergy.com
StraightUp Solar of St. Louis Logo

StraightUp Solar of St. Louis

4.6/5
Based on 55 customer reviews.

Services Offered

Grid-Tied Solar SystemConsultationFinancing AssistancePanel InstallationCleaning And MaintenanceBattery Storage

Highlights

  • Reliable customer support
  • Free quotes
  • Clear pricing policy
11696 Lilburn Park Rd, St. Louis, MO 314-218-2663 straightupsolar.com
Pyramid Electrical Contractors, Inc. Logo

Pyramid Electrical Contractors

3.9/5
Based on 20 customer reviews.

Services Offered

Panel InstallationSkilled RepairsCleaning And Maintenance

Highlights

    300 Monticello Pl, Fairview Heights, IL 618-632-1180 pyramidelectrical.com

    More Local Solar Companies

    Route 66 Solar

    User Reviews: 4.6/5 

    2110 Troy Rd Suite B1
    Edwardsville, IL 62025

    SunSent Solar

    User Reviews: 4.6/5 

    1710 Scherer Pkwy
    St Charles, MO 63303

    Helio Solar Power, LLC.

    User Reviews: 4.3/5 

    119 S Main St
    St Charles, MO 63301

    To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

    Ranking Methodology

    We evaluated a multitude of St. Louis solar companies, using the following criteria to choose the top-notch:

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    Facts about St. Louis
    Average Max Temp:65°F
    Solar Payback Period:11.3 years
    Average Daily Sunlight:55%
    Homes Powered by Solar:818
    Average Annual Energy Bill:$1,291
    Solar Power per Capita Percentile:48.0%

    Expert Tips By

    This Old House empowers homeowners with the knowledge and tools they need to tackle various projects and navigate the complexities of homeownership.

    Benefits of Solar Energy

    Solar energy offers numerous advantages that will enhance your home for years to come.

    • Better energy independence: Adding a battery storage system lets you have dependable energy during grid outages and storms.
    • Reduced carbon footprint: Using clean solar power means you're less dependent on fossil fuels, which emit harmful greenhouse gasses.
    • Smaller power bills: Generating some or all of your own electricity will spend less on electricity long-term. Plus, some states provide net metering programs that make it possible for you to sell your unused energy back to the grid, generating extra credits toward your energy bill.

    What Solar Incentives Are Available to St. Louis Homeowners?

    Missouri's public agencies and power companies offer a range of solar incentives to help reduce your solar system costs. Here is a breakdown of applicable solar programs where you live.

    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.

    How To Choose the Best Solar Company in St. Louis

    The more thorough your provider search is, the better your solar panels will ultimately function. Here are some important factors to consider while searching for a solar provider.

    Licensing and Training

    In Missouri, it's the responsibility of counties and cities issue contracting licenses. However, all contractors must register with the Missouri Secretary of State. You should also visit a company's website to learn about its private certifications. Two of the most recognized are the PV Installation Professional and Solar Heating Installer certificates, awarded by the North American Board of Certified Energy Practitioners (NABCEP). Some companies don't publish this information online, so you should also ask your estimator about them.

    Cost of Solar Panels in St. Louis

    Your solar modules' type will affect how much power you can generate. Monocrystalline panels are among the highest quality and perform the best but cost the most. Polycrystalline panels offer you a budget panel with a traditional design, but at the cost of less power generation. Thin-film panels are excellent for non-traditional roof shapes and cost the least, but don't work well for large residential installations.

    You can also add battery backups and electric vehicle (EV) chargers. These will increase your total installation cost, but they can increase your solar system's performance. Not all solar providers offer these extras, so look for a provider that installs them if it's a priority for you.

    Generally speaking, it costs about $16,850 for a five-kilowatt solar array in St. Louis. This table shows more specific costs for different solar panel types and system components in your area.

    Solar Panel CostAverage Cost
    Solar Monocrystalline$1,102
    Solar Polycrystalline$860
    Thin-Film$503
    Solar Battery$705
    Solar Home EV Charger$2,645

    Financing Solar Energy in St. Louis

    Choosing the ideal financing option will influence your overall solar system cost and possible savings. Common payment options include loans, leases, cash payments, and power purchase agreements. Though it requires a large up-front payment, cash is the most cost-effective choice because it doesn't accrue interest and qualifies you for incentives. Solar loans are the runner-up option. As with a car loan or mortgage, you'll pay a monthly rate towards system ownership, including interest. You can still apply for cost-saving solar incentives, and depending on your lender, you could put as little as $0 down. Solar leases allow you to pay a monthly rate to rent your panels, while a PPA lets you pay a variable rate based on only the energy you use. We generally advise against these options since you won't own your system and are disqualified from solar incentives, but they might be appropriate in certain circumstances. Ask each installer you're evaluating about the financing options it offers. A salesperson can help you determine the best option for your budget.

    The table below lists the average payback periods for different capacities of solar systems in St. Louis.

    A 26% federal solar tax credit applies to recently-purchased solar equipment purchased through 2032. Further incentives may be available through city and state governments, usually in the form of rebates and special financing programs.

    Solar System CapacityEstimated Payback period
    1 kW2.3 years
    2 kW4.5 years
    5 kW11.3 years
    10 kW22.7 years

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    Frequently Asked Questions About Solar in St. Louis

    How much money could I save by going solar in St. Louis?

    Most St. Louis homeowners spend about $1,291 on energy each year. Your costs could drop by $870.58 for each kilowatt you generate after you pay off a solar array.

    How popular is solar energy in St. Louis?

    Yes, solar energy is readily available in St. Louis. A growing number of area homes already use solar power on-site or through utility grids, and Missouri has about 2647 jobs comprising its solar economy.

    Should I anticipate a property value increase after switching to solar energy?

    Yes, new solar systems translate to higher property values according to the National Renewable Energy Laboratory (NREL.) Homeowners could project a $20 property value increase for each dollar they save on energy. Therefore, $600 in energy savings could boost your property value by $12,000.

    Is solar panel installation a fast job?

    Your solar job's duration will depend on its size and complexity, as well as St. Louis' permit and inspection procedures. It could take a couple of weeks to two months on average.

    What's the average solar system size in St. Louis?

    The average St. Louis solar system size is 7.2 kilowatts (kW). However, your final system size depends on your household's power consumption. Your surrounding shading, panel model, and roof size could also impact your final result. A professional solar company will consider these factors and determine the right array size for your home.

    What is the average payback period for St. Louis solar panels?

    Most St. Louis homeowners pay back a solar loan in 13.5 years. You can shorten the payback period by paying off extra loan principal each month.

    Should I get quotes from multiple St. Louis solar companies?

    Yes, we recommend obtaining free solar quotes from three or more companies. You should review each quote and compare financing options, labor fees, prework scope and costs, warranty details and equipment costs. Ensure each quote provides an itemized financial plan and includes your expected payback period.

    To share feedback or ask a question about this article, send a note to our Reviews Team at reviewsteam@thisoldhousereviews.com.

    Sources