15 Best Solar Companies in San Marcos, TX (2025 Reviews)

We analyzed over 1500 solar companies in the nation,
and have selected the top 15 in San Marcos based on:

  • Customer review scores
  • Service area for San Marcos, TX
  • Company policies and services offered
  • Accreditations and certifications

Average San Marcos homeowner saves $1,593/year with solar panels

By EcoWatch Local Advisors

Data Analysis: James Savino

Updated January 24, 2025

Why you can trust EcoWatch

We work with a panel of solar experts to create unbiased reviews that empower you to make the right choice for your home. No other site has covered renewables as long as us, which means we have more data and insider information than other sites. Our rankings are never affected by revenue or partnerships.

Best Solar Companies in San Marcos

Looking for the top solar companies in San Marcos? Installing solar panels is an exciting project that many homeowners find rewarding for their wallets, communities and the planet. One of the main reasons why many homeowners are thinking about switching to solar power is because it can significantly reduce your monthly utility bills which keep getting higher each year.


Here, we’ll make a list of some of the top solar companies in San Marcos to make your choice much easier.To get free quotes from the top solar companies in San Marcos, click the "get quote" button below.

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EcoWatch Rankings for Solar Companies in San Marcos

Best Local Installer
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EcoWatch Rating

5.0/5

512 Solar

  • Pros icon Prompt Service Delivery
  • Pros icon Free Quotes
  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Consultation
  • Service icon Skilled Repairs
  • Service icon Panel Installation
  • Service icon Cleaning and Maintenance

Website: http://512solar.com/
Address: 1250 South Capital of Texas Highway Bldg 3, Suite 400, Austin, TX 78746
Phone: 5123292117
Outstanding Local Installer
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EcoWatch Rating

5.0/5

Smartworld Energy

  • Pros icon Free Quotes
  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Con icon Limited information available on website

Services Offered

  • Service icon Consultation
  • Service icon Cleaning and Maintenance
  • Service icon System Decommissioning
  • Service icon Skilled Repairs
  • Service icon Panel Installation

Website: https://smartworldenergy.com/
Address: 10300 Heritage Blvd Suite 102, San Antonio, TX 78216
Phone: 2108535656
Outstanding Local Installer
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EcoWatch Rating

5.0/5

RENERGY Solar & Energy Storage Systems

  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation

Website: http://www.renergysolar.com/
Address: 5 Pfeiffer Rd, Boerne, TX 78006
Phone: 8307558699
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Lighthouse Solar

  • Pros icon Informative Resources
  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Solar Carports
  • Service icon Cleaning and Maintenance
  • Service icon Battery Storage
  • Service icon Consultation
  • Service icon Skilled Repairs

Website: https://lighthousesolartx.com/
Address: 2000 S 7th St, Austin, TX 78704
Phone: 5124765555
Outstanding Local Installer
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EcoWatch Rating

4.9/5

ATX Solar

  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Battery Storage
  • Service icon Consultation
  • Service icon Financing Assistance
  • Service icon Panel Installation

Website: https://www.goatxsolar.com/
Address: 1401 Lavaca St #942, Austin, TX 78701
Phone: 5128039652
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Erco DER Services - Solar Energy - Energia Solar

  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation

Website: https://erco.energy/us
Address: 10518 Gulfdale St, San Antonio, TX 78216
Phone: 2106393818
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Delta Solar Power

  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation

Website: http://deltasolarpower.com/
Address: 6836 San Pedro Ave Suite 205, San Antonio, TX 78216
Phone: 2106877675
Outstanding Local Installer
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EcoWatch Rating

4.9/5

Atma Energy

  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Battery Storage
  • Service icon Panel Installation

Website: https://atma-energy.com/
Address: 1430 N Flores St # 200, San Antonio, TX 78212
Phone: 2102472862
Outstanding Local Installer
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EcoWatch Rating

4.7/5

The American Power Company

  • Pros icon Reliable Customer Support
  • Pros icon Free Quotes
  • Pros icon Informative Resources
  • Pros icon Clear Pricing Policy
  • Con icon Limited information available on website

Services Offered

  • Service icon Financing Assistance
  • Service icon Panel Installation

Website: http://www.powerbacktothepeople.com/
Address: 8737 State Hwy 71, Austin, TX 78735
Phone: 7379001980
Outstanding Local Installer
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EcoWatch Rating

4.7/5

IES Texas Solar

  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Financing Assistance
  • Service icon Battery Storage
  • Service icon Panel Installation
  • Service icon Skilled Repairs

Website: https://www.iestxsolar.com/
Address: 8718 Business Ct, Converse, TX 78109
Phone: 2106518294
Outstanding Local Installer
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EcoWatch Rating

4.7/5

Optimum Solar USA

  • Pros icon Free Quotes
  • Pros icon Clear Pricing Policy
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Financing Assistance
  • Service icon Panel Installation
  • Service icon Consultation

Website: https://optimumsolarusa.com/
Address: 1812 Centre Creek Dr Suite 215, Austin, TX 78754
Phone: 5124890044
Outstanding Local Installer
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EcoWatch Rating

4.7/5

Greenstar Power

  • Pros icon Reliable Customer Support
  • Pros icon Clear Pricing Policy
  • Pros icon Free Quotes
  • Con icon Limited information available on website

Services Offered

  • Service icon Cleaning and Maintenance
  • Service icon Financing Assistance
  • Service icon Consultation
  • Service icon Permit Assistance
  • Service icon Skilled Repairs
  • Service icon Panel Installation

Website: https://greenstarpower.com/
Address: 1000 Gattis School Rd STE 350, Round Rock, TX 78664
Phone: 5122537100
Outstanding Local Installer
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EcoWatch Rating

4.6/5

NATiVE Solar

  • Pros icon Free Quotes
  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Consultation
  • Service icon Battery Storage
  • Service icon Financing Assistance
  • Service icon Cleaning and Maintenance
  • Service icon Panel Installation

Website: https://nativesolar.com/
Address: 3998 US-290 d, Dripping Springs, TX 78620
Phone: 8552536284
Outstanding Local Installer
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EcoWatch Rating

4.5/5

Texas Solar

  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation

Website: http://txsolar.com/
Address: 5631 University Heights Blvd Ste 107, San Antonio, TX 78249
Phone: 2102456600
Outstanding Local Installer
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EcoWatch Rating

4.4/5

Freedom Solar Power - San Antonio Solar Panel Installers

  • Pros icon Free Quotes
  • Pros icon Clear Pricing Policy
  • Pros icon Reliable Customer Support
  • Pros icon Informative Resources
  • Pros icon Prompt Service Delivery
  • Con icon Limited information available on website

Services Offered

  • Service icon Panel Installation
  • Service icon Consultation
  • Service icon Off-Grid Solar Systems
  • Service icon Cleaning and Maintenance
  • Service icon Permit Assistance
  • Service icon Financing Assistance
  • Service icon Tesla Powerwall
  • Service icon Battery Storage
  • Service icon Skilled Repairs
  • Service icon Grid-Tied Solar System

Website: https://freedomsolarpower.com/locations/san-antonio-solar-company
Address: 17750 Lookout Rd Suite 605, Schertz, TX 78154
Phone: 2103612883

Methodology: How We Ranked the Best Solar Companies in San Marcos

EcoWatch's solar experts analyzed each solar company in San Marcos based on criteria such as its reputation in the industry, customer reviews, services, warranty coverage and financing. Using this solar methodology, we used the data we collected to rate and rank each company and narrow down our picks for the best solar companies in San Marcos


Below are some the criteria we examined specifically for Texas solar companies

  • Brand reputation and certifications (20%): We take each company's Better Business Bureau (BBB) score into consideration, as well as how long the installer has been in business (at least 5 years is required, 10 preferred) and what type of solar certifications it holds.
  • Customer reviews (20%): Trust is a top priority at EcoWatch, so we take customer experience under close consideration. We scour different review sites and customer testimonials when ranking our top solar companies, checking sites such as Trustpilot and Google Reviews. We also consider any potential complaints or lawsuits filed against these companies and award or remove points accordingly.
  • Warranty (20%): A company earns a perfect score in this category if it offers 25-year warranties that cover performance, product and workmanship. The industry standard that we measure companies against is 25-year product and performance warranties, along with a 10-year workmanship warranty. We also look closely into the track record of the post-installation support each company provides in terms of honoring its contracts
  • Solar services (10%): All of the companies we review install solar panels, but we award companies higher points if they offer additional services for customers, like battery installation, energy-efficiency audits, and EV chargers.
  • Pricing and financing (10%): It's hard to get exact quotes for solar projects, but we use marketplace research to determine how each company prices its equipment and installation services. Additionally, companies that offer more help for panel financing — like in-house loans, leases, or PPAs — score higher than those that don't.
  • Availability (10%): The bigger the service area, the higher the company will score.
  • Transparency and accessibility (5%): Solar installers that offer free consultations and easy contact methods score higher in this category.
  • Environmental, social and corporate governance factors (5%): A company earns a perfect score in this category if it offers public data disclosure, addresses end-of-life (EOL) products or processes, and demonstrates a commitment to uplifting the communities that it serves.

The Cost and Benefits of Solar in San Marcos

For many people considering switching to solar, the decision of which solar company to choose comes down to total costs.Some key factors that influence how much it will cost to install a solar panel system on your home and how much money you could save over time include:

  • Incentives: The federal solar investment tax credit, which everyone qualifies for, lets you deduct 0 of the cost of your solar system installation from your federal taxes. Additionally, not including incentives, you can save about $19,000 over 20 years on your energy bills.
  • Typical energy usage: The more energy your home consumes on average and the higher your current energy bills are, the more benefits you’ll see from going solar.
  • Your city: This affects the average daily sunlight your roof gets, which helps determine how many panels you need.
  • The model of solar panel system you can afford: This is dependent on how much you’re willing to spend upfront.

There are lots of wonderful benefits of solar despite the initial cost of installation. It can help the Earth and your wallet. In addition, it can boost the value of your home, leading to even more benefits if you choose to sell your home later.

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Solar Incentives in San Marcos

One of the great things about installing a solar panel system is receiving incentives from the government.These incentives typically include cash rebates, tax breaks and/or solar renewable energy credits. They can reduce the cost of installing solar panels by 0, upwards of 50% depending on where you live. Take a look at our article on solar incentives to see what incentives you can take advantage of.

Environmental Impact of Switching to Solar in San Marcos

A lot of people want to do what they can for the planet, which for many is the chief reason they’re interested in installing solar panels.Something many might be asking themselves is how much can they really help save the environment by going solar anyway? The average person has a rather large carbon footprint. Between their car, which releases over 10,000 pounds of carbon dioxide emissions every year, and powering their home, it can be overwhelming to think about what to do. Using solar power is one of the easiest things you can do to help.Because solar panels don’t release carbon dioxide emissions into the atmosphere when creating electricity, they’re a good alternative to traditional energy sources. In fact, you could look forward to lowering your carbon dioxide emissions by about 80 pounds each year. The great things about solar power are infinite — just like solar power is! That's why so many people have been happy with using solar energy.

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EcoWatch's San Marcos, TX Solar Company Rankings FAQs

Which solar panel installer is the best in San Marcos?

The highest-rated local solar company in San Marcos is 512 Solar, with a rating of 5.00 stars.

What are the pros and cons of going solar?

The advantages of solar power are that it can decrease or, for some, 100% eradicate your electricity bills, raise your home’s value and lower your carbon footprint. The greatest disadvantages are that solar panels can be pricey to install, you may not save as much if you don’t use a lot of electricity and it doesn’t work for all roof types and locations.

Are solar panels worth it?

Solar panels call for a significant upfront investment that usually costs at least ten thousand dollars, but whether or not solar panels are worth it depends on a variety of factors like the cost of electricity near you and the amount of direct sunlight your roof gets.

How often do solar panels need to be replaced?

Though the average lifespan of solar panels is 25 to 30 years, that doesn't mean they are completely unusable. What this means is the amount of energy they produce will have decreased significantly after that point. You can choose to replace them once you've had them for that long or you can continue to use them at a lower efficiency after that time.

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.