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We’re not just another solar company

Why More Families Are Choosing OneSun

OneSun was built to fix what others overlook: honesty, craftsmanship, and support that actually lasts.

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California’s Trusted Solar, Roofing & Battery Experts

Delivering Reliable Solutions Across California

11.5+ Years of Experience

We’ve been in the solar and home services industry for over a decade — bringing you the insight, reliability, and efficiency that only seasoned professionals can offer.

5-Star Client Support

Our customer service doesn’t end at installation. We’re here before, during, and long after your system is up and running — with real people ready to help when you need us.

Backed by a 50-Year Warranty

We offer industry-leading warranty options up to 50 years, giving you long-term peace of mind with every solar or roofing installation.

$0-down Financing

Our $0 down financing options mean you can install a custom solar system without paying anything upfront. Instead, you’ll make predictable monthly payments

2-Week Timeline

We offer fast, efficient installations with timelines as quick as two weeks — so you can start saving sooner and enjoy your new solar or roofing system without the long wait.

“Smiling family standing together, looking into the distance with gratitude, representing pride and satisfaction in their home investment.”

Built Different

We Left the Big Solar Companies for a Reason

After years of seeing families misled, rushed, or forgotten post-installation, we created OneSun to raise the bar. Our mission is simple: do right by the homeowner — from the first call to years after the panels are up.

Upgrade your home with confidence

HERE FOR ALL

Areas we serve

STILL NOT SURE?

Frequently Asked Questions

Don't worry, we're always here to help!

Question 1: What makes OneSun different from other solar companies?

We’re locally focused, fully transparent, and committed to long-term support. Many solar companies disappear after installation — we stay connected to ensure your system performs for years to come.

Question 2: Do you only serve Fresno?

Fresno is our home base, but we serve the entire Central Valley and surrounding areas. We know the local conditions, utility rates, and solar incentives inside and out.

Question 3: Are you a licensed and certified contractor?

Yes. OneSunSolutions is fully licensed, insured, and all of our technicians meet California state certification standards for solar, roofing, and electrical work.

Question 4: Will I be pressured into buying solar?

Absolutely not. Our process is consultation-first. We assess your situation, explain your options, and let you decide — no high-pressure sales tactics, ever.