Licensed and Insured

License # 990354

888.815.6633

  • The Only Diamond Certified Solar Company

    offering a 25-year

    Performance Guarantee

    Get a Quote Today

San Francisco Solar Company: With Offices in San Diego and Stockton

Diamond Certified Solar Company Serving All of California, with Locations in San Diego, Stockton & San Francisco

Our California solar experts are dedicated to helping you harness the clean, renewable power of the sun in your home. We deliver the high-quality service, parts, and designs that you need, creating long-lasting intelligent designs that can last you years into the future. Our solar developers offer a turnkey solution with asset management for the entire life of your solar asset. Unlike traditional solar installers, our commitment to our clients goes beyond the installation of the system alone. Every one of our installations carries a 25-year performance guarantee. This means that we always fix underperforming systems at no cost to you, including labor and parts. We also offer an industry-leading 25-year roof integrity warranty.

SolarUnion is a full-service solar electricity developer founded in the heart of Silicon Valley. We market, finance, build and operate photovoltaic (PV) solar systems to deliver clean electricity at affordable rates. Our San Francisco solar company’s goal is to be your energy partner, which is why we make sure you are fully satisfied with our services. We have handled thousands of jobs and are ready to help you.

Offices in San Diego, Stockton, and San Francisco enable us to provide unparalleled installation and service to all locations in the state of California. No matter where you live, from San Diego to Sacramento, or beyond, SolarUnion stands ready to serve.

The SolarUnion Philosophy

We want to be a reliable, long-term partner for our clients, so we focus on providing them with quality installations, strong guarantees, and timely maintenance for their solar investments. Ultimately, our goal is to make sure every Californian has access to clean, Green energy at an affordable rate.

We Empower You!

Tens of Thousands of Dollars in Savings is Just a Click Away!

The question is not if you will eventually use solar, but when will you start?

Contact us today at (888) 815-6633 to receive your customized quote.

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Go Solar with SolarUnion Because It’s the Way to Go

  • 25-Year Trifecta Performance Guarantee
  • Complimentary Monitoring Hardware/Software For All Our Systems
  • Talented Licensed Installers. High-Quality Components
  • $0 Down Options Available
  • Industry-Leading Roof Integrity Warranty
  • Customized Financing Options
  • Functional, Timeless Design
  • Full-Service Solar Electricity Developer
  • Founded in the Heart of Silicon Valley

Enjoy a Lifetime
of Solar Energy Savings

Highly-qualified installers, certified and vetted by some of the largest green technology funds and financing platforms of the world.

From convenient financing options to the latest technology in solar photovoltaic panels, our company knows how to get your energy project done right.

  • SolarUnion SF BBB Business Review

Don’t Just Take Our Word for It

Read What Our Clients Have to Say [+]

  • I have been 100% happy with the way it’s worked out…and a few of my friends in Lincoln have also used SolarUnion and have been very happy as well.

  • I was referred to SolarUnion and they offered me the most attractive option with $0 down at a price that was competitive, including system maintenance and installation & performance guarantees.

  • I paid no money down and am saving instantly off my electricity bills. I now enjoy the benefits of a high-quality solar system. To make things even better, thanks to the solar addition my property has definitely experienced an increase in resale value.

  • They were prompt with their install, and everything was done in a top-notch manner. I love my solar system and would call them in a heartbeat to do more work for me.

  • The customer service was excellent, and they went above and beyond my expectations. They are heads and tails above all of the other installers I interviewed.

  • They were straight shooters, and they weren't like other companies, who tried to sell me something I didn't need.

Our San Francisco Solar Company Is

Your Top Choice​

We never want you to be left in the dark! At SolarUnion, we work hard to create a beautiful solar design that is customized to your home and provide lasting, clean energy that saves you money while protecting the environment. You can rest assured that our technicians and team of consultants have the skill and knowledge to get your job done right without hassle and stress to you.

Reliability and Peace of Mind

  • Diamond Certified CompanySolarUnion is the only Diamond Certified company offering a 25-year Performance Guarantee. We are top-rated for our quality and customer satisfaction. Our San Francisco solar experts stand behind our work.

  • Affordable Solution – GuaranteedOur efficient operations and experienced team allow us to pass substantial cost savings to the customer. Whether financing the system or investing in cash, SolarUnion guarantees outstanding value and rate of return.

  • $0 Down Options Available​No money out of pocket AND save money in the first month. Start saving from day one!

  • Industry Leading Performance GuaranteeWe guarantee components, workmanship (including roof integrity), and, most importantly, output for the next 25 years. Guaranteed savings from day one and for the long run.