SolarUnion Review 2024 - A Local Choice?

Installing solar since 2010
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Updated on 2023-08-15


SolarUnion is a Diamond Certified full-service solar panel installation company in San Francisco, California. Founded in the heart of Silicon Valley in 2011, the company helps homes harness the clean and renewable power of the sun. They deliver high-quality service, parts, and designs that you need to live comfortably. 

SolarUnion markets, finances, builds, and operates photovoltaic (PV) solar systems for clients in California and Texas. Their turnkey solar solution comes with asset management for the entire life of the solar asset. Each of their installations has a 25-year performance guarantee; they always fix underperforming systems at no cost to their clients, including labor and parts. They also offer a 25-year roof integrity warranty.



SolarUnion’s Services and Features

Roof Inspection and Solar-Readiness Audits: The quality of roofs has an impact on the effectiveness and longevity of solar rooftop installations. Before any installation is done, SolarUnion inspects the roof to confirm its sturdiness and capacity to soak up the sun’s rays. Experts check the roof for leaks, weak spots, signs of dry rot, deterioration, or other issues. 


Solar System Installation: After an in-depth solar readiness audit and roof inspection, SolarUnion designs and installs solar panels on your roof. Their customers own the system from the first day of installation, and there is a 25-year service and maintenance agreement at no extra charge. SolarUnion offers high-efficiency solar panels through their partnerships with Panasonic INC, SunPower, and Trina Solar.

In some cases, the solar panels don’t have to be on the rooftop. If there is not enough sunlight on your roof, ground-mount panels can be installed. The ground-mounted residential solar system allows for seasonal adjustability depending on the position of the sun, so you can always capture the highest concentration of the sun’s rays and maximize your solar energy savings. 


Battery Backup System Installation: Energy generation from solar panels is always at its peak during the afternoon hours. To maximize energy generation and prevent a significant part of your energy from being passed back to the grid to be used somewhere else, SolarUnion offers solar battery systems that ensure peak energy management.


Other products and services offered by SolarUnion include:

  • Electrical panel upgrades
  • Solar EV charging stations
  • Solar repairs and upgrades
  • Generator installation



SolarUnion’s Service Delivery

Based on reviews we trawled online, SolarUnion offers excellent service, competitive pricing, knowledgeable advice, and quick customer service. Their sales approach is educational and allows customers to become fully informed before making the decision to own a SolarUnion system.

Their project managers keep their clients updated on every step taken in the installation process. Permits, inspections, and other formalities are handled perfectly. The reviewers reported that all suggestions made by the company’s experts on improving energy efficiency had positive results. 

Reviewers also reported that their solar panels have been working flawlessly for several months without issues and should pay themselves off in the expected timeframe. Users are able to monitor their system from an app and know what’s going on with power generation. One satisfied customer particularly reported that SolarUnion is one of the very few companies that can install solar panels on a foam roof. The SolarUnion team staged the foam roof project excellently while working together with the roofing company. 

Overall, customers reported a smooth experience with SolarUnion. Though SolarUnion doesn’t offer the lowest prices, customers prefer them for their warranty on parts, workmanship, and performance.



SolarUnion is a legitimate company. Here are some of its most recent awards, accreditations, and partnerships:


Proof #1 The company is Diamond Certified.
Proof #2 In 2021, SolarUnion earned the Angi Super Service Award.
Proof #3 They offer products from TrinaSolar, Panasonic, SunPower, REC, SMA America, SolarEdge, SnapNRack, and Tigo Energy.
Proof #4 Their associated financing companies include SunPower, HERO, Matadors Community Credit Union, Provident Credit Union, and Ygrene Energy Fund.
Proof #5 SolarUnion is transparent about its contact details, providing its location and phone number on its website for ease of contact. 
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Secret Shopper Analysis

We reached out to SolarUnion, and we commend their focus on high-quality service and designs. The company offers turnkey solar solutions for residential and commercial clients in California and Texas.

They provide roof inspections and solar-readiness audits to ensure optimal installations. SolarUnion uses high-efficiency solar panels from trusted partners such as Panasonic, SunPower, and Trina Solar. They also offer battery backup system installations, electrical panel upgrades, solar EV charging stations, and more.

Reviews indicate excellent service, competitive pricing, and knowledgeable advice from their team. SolarUnion is recognized as a legitimate company with awards, accreditations, and partnerships. Their comprehensive warranty package and commitment to customer satisfaction make them a recommended choice for solar energy needs.

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Review Analysis

SolarUnion has established an impressive reputation in the solar industry, boasting a commendable average review score of 4.8. With 53 customers awarding them a 5-star rating, the company is lauded for providing a smooth and relatively easy experience, along with competitive and comprehensive offerings. However, it’s worth noting that there are two reviews of 3 stars or less.

Customers expressed concerns about the sales process, mentioning a lack of attention to panel inspection and a perceived bait-and-switch tactic, which raises concerns about dishonesty. While the majority of customers have had positive experiences, SolarUnion should address these concerns to maintain transparency and trust throughout the sales process.

Overall, SolarUnion has showcased strengths in delivering a smooth and comprehensive service, although addressing the highlighted concerns will further enhance their reputation.

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The SolarEmpower View

SolarUnion offers excellent solar energy solutions at competitive prices. Their selling point is the warranty package offered to clients. We recommend them as a good company to contact for your solar energy needs. The company offers high-quality products and commendable service suitable for your energy needs. Their customer service is also excellent.


💲Cost: 7/10 ✅Legitimacy: 9/10
⭐️Quality: 9/10 📞Customer Service: 9/10
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Contact details

Phone Number: 888-363-9373

Address: 1700 Montgomery Street, Suite 108, San Francisco, CA 94111


Industry Certifications

Better Business Bureau
Better Business Bureau

Service Types

Residential Solar


Will SolarUnion provide proper maintenance?

Yes, their comprehensive warranty package offers proper maintenance.

Does SolarUnion provide a good service?

Yes, reviewers say that the company’s workers are professional and are willing to go the extra mile.

Is SolarUnion trustworthy?

Yes, they deliver on agreed terms.

SolarUnion Solar Details

Licensing Information

License # 990354

1700 Montgomery Street Suite 108
San Francisco CA

SolarUnion User Reviews

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