We may be compensated if you purchase through links on our website. Our Reviews Team is committed to delivering honest, objective, and independent reviews on home products and services. More

Best 5 Solar Companies in St. Louis, MO

Get matched with a top local pro
Join the 10,601 people who have received a free, no-obligation quote in the last 30 days
  1. Home
  2. Find Local Pros
  3. Solar Near Me
  4. Missouri
  5. St Louis
  6. St Louis Solar
Written By Max Peterson | Last Updated: February 05, 2024

With St. Louis' clear skies and little rainfall, it's an excellent area for families and businesses aiming to harness the additional sunlight. While going solar 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. In this guide, we'll highlight St. Louis' best solar providers and offer suggestions for your company choice, so you can find the right one for your residence.

Best High-Efficiency System
  • 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
  • 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

Streib Company Logo

Streib Company

Based on 252 customer reviews.

Services Offered

Commercial Panels Residential Panels Full-Service


  • Free quotes
  • Reliable customer support
  • Clear pricing policy
9225 Watson Industrial Park, St. Louis, MO 314-487-7474 streibco.com
EFS Energy Logo

EFS Energy

Based on 27 customer reviews.

Services Offered

Maintenance Residential Panels Financing Assistance Consultation Commercial Panels


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

StraightUp Solar

Based on 49 customer reviews.

Services Offered

Ev Charger Commercial Panels Battery Storage Tesla Powerwall Residential Panels Maintenance


  • 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

Based on 19 customer reviews.

Services Offered

Maintenance Residential Panels Full-Service Emergency Services Commercial Panels Skilled Repairs Ev Charger


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

More Local Solar Companies

Sun Solar St. Louis

User Reviews: 4.7/5 

10855 Metro Ct
Maryland Heights, MO 63043

Route 66 Solar

User Reviews: 4.6/5 

2110 Troy Rd Suite B1
Edwardsville, IL 62025

Sunsent Solar

User Reviews: 4.7/5 

1710 Scherer Pkwy
St Charles, MO 63303

Vista Energy Renewables

User Reviews: 4.3/5 

130 W Central St
Bethalto, IL 62010

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:

Get Your Solar Project Quote Today

Get matched with a top local pro

Please enter a valid 5-digit zip code!

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.

What Solar Incentives Are Available to St. Louis Homeowners?

Missouri homeowners who choose solar could qualify for special financing, tax credits, rebates and reimbursements. Here are just a few of the region's incentive offerings.

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

Choosing a company is the first step toward a well-oiled and cost-efficient solar array. 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 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 project price, 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 Cost Average 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 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 Capacity Estimated Payback period
1 kW 2.3 years
2 kW 4.5 years
5 kW 11.3 years
10 kW 22.7 years

Ready to Get a Quote on Your Solar Project?

Get matched with a top local pro

Please enter a valid 5-digit zip code!

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.