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Ontario
(855) 502-6363
★★★★★ 5.0 — 2,500+ Google Reviews
Go Solar in Ontario, CA — Local Experts Since 1970
Ontario sits at the commercial heart of the western Inland Empire — and whether your property is residential or commercial, the solar opportunity here is substantial. From custom residential rooftop systems to large-scale commercial installations, Option One Solar delivers transparent pricing, proven performance, and 278+ days of consistent inland sunshine working for you year-round.
54+ Years
Experience
2,500+
Installs
5-stars
Rated
Our Services
What We Offer in Ontario
Full-service solar from consultation to commissioning, built for Ontario homeowners and businesses.
Rooftop Solar for Homes
From single-family homes to multi-unit properties, we design and install solar systems tailored to each Ontario home. Take advantage of 278+ annual sunny days and start reducing your monthly SCE costs significantly.
Business Solar Solutions
Our licensed team delivers scalable solar for Ontario businesses — full EPC from design to commissioning. We help commercial clients reduce overhead, achieve sustainability targets, and maximize the federal Investment Tax Credit.
Energy Storage Systems
Pair your solar system with a Tesla Powerwall or commercial-grade BESS for energy independence. In Ontario's warm inland climate with consistently clear skies, battery backup isn't a luxury — it's the smartest upgrade you can add to a solar installation.
Ongoing System Support
Real-time monitoring keeps you informed about your system's performance 24/7. Our local Inland Empire team handles maintenance and repairs quickly, so your investment stays at peak output year after year.
Site Analysis & Design
Our engineers perform a thorough analysis of your Ontario property — roof condition, orientation, shading, and local SCE rate structure — to design a system that delivers the best possible return on your investment.
Turnkey EPC Services
We handle everything from structural engineering to City of Ontario building permits and SCE interconnection agreements. Our EPC capability means a single point of accountability from contract signing to system activation.
Free Consultation
Get a No-Obligation Solar Quote in Ontario
Let our experienced team assess your Ontario property's solar potential. We handle everything from shading analysis and system modeling to permitting and financing — all with transparent pricing and no obligation.
Detailed property and shading assessment
Custom system design with production estimates
Transparent pricing with financing options
Federal tax credit and incentive guidance
No obligation — no pressure
Prefer to talk? Call us directly.
(855) 502-6363
Start Your Free Solar Quote
Takes less than 60 seconds
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Our Community
Committed to Ontario and Inland Empire
When Ontario homeowners and business owners choose solar, they deserve a contractor who understands their community — not a national franchise operating from a call center three states away. Option One Solar has served Inland Empire for over five decades, and we bring that local knowledge to every project we take on in Ontario. Ontario's central Inland Empire position and strong commercial sector create outstanding opportunities for both residential and commercial solar. We understand the local climate, the SCE rate structure, and the City of Ontario permitting process — all of which directly impact how we design and install your system. That local expertise means fewer surprises, smoother permitting, and a system that performs as promised. Our C-10 and C-46 licensed team handles every phase of your project, from initial consultation through design, installation, and interconnection with SCE. And because we stand behind every installation with a 25-year warranty, we're always just a call away when you need us.
How It Works
The Ontario Solar Installation Process
Our streamlined process takes Ontario homeowners from consultation to clean energy in as few as 6-8 weeks.
Free Ontario Solar Consultation
We begin with an honest conversation about your goals and a thorough look at your Ontario property. Our team reviews your SCE bills, evaluates your roof and site conditions, and identifies any shading or structural factors that affect system design — before recommending a single product.
System Design Optimized for Ontario
Our engineers combine your site data with the Inland Empire's reliable sun exposure to create a custom production model for your specific property. You receive a clear proposal showing system size, estimated annual output, projected savings, and full payback timeline — all with transparent pricing from the start.
Installation, Permits & SCE Coordination
We manage the entire process: engineering drawings, City of Ontario building permits, AHJ inspections, and SCE interconnection paperwork. Our crew installs your system cleanly and efficiently, typically completing Ontario residential projects within 1 to 3 days.
Activation, Monitoring & Long-Term Support
Once SCE approves your system to operate, we activate it and walk you through your monitoring dashboard so you can track production from day one. Our team is always reachable for maintenance, service, or questions — and every installation is backed by our 25-year warranty.
Why Choose Us
Why Ontario Goes Solar with Option One
Our commitment to Ontario goes beyond installation day. Here's what you can expect when you partner with us.
Established in 1970
Over 54 years serving Southern California — including Ontario — gives us an unmatched track record and depth of knowledge that newer contractors simply cannot match.
Dual Contractor License
Our C-10 electrical and C-46 solar contractor licenses ensure every Ontario project meets California's highest standards for safety, engineering, and code compliance.
Lifetime Local Support
Our 25-year warranty isn't just a document — it's a promise backed by a team that has been operating in Inland Empire for over half a century and isn't going anywhere.
Deep Local Knowledge
We know Ontario's neighborhoods, City of Ontario building department, and SCE's interconnection process. That knowledge translates to fewer delays and smoother projects for our customers.
2,500+ Five-Star Reviews
Our reputation across Southern California is built on thousands of satisfied customers. Ontario homeowners join a community of solar owners who trust Option One Solar to deliver.
Every Budget Covered
From zero-down solar loans to lease programs, we structure financing to maximize your Ontario savings immediately. Our team walks you through every option with full transparency.
FAQ
Common Solar Questions from Ontario Residents
The most frequently asked solar questions from Ontario homeowners — answered clearly and honestly.
Service Areas
Also Serving Nearby Communities
In addition to Apple Valley, Option One Solar proudly serves homes and businesses throughout the High Desert and Inland Empire.
Get Started
Ready to go Solar in Ontario?
Take the first step toward energy independence. Whether you are protecting your home from rising SCE rates or powering your business with clean energy, our Ontario team is ready to help.