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If the pitch starts at your door and ends with "sign tonight for the special," sleep on it. The sun will still be there tomorrow; so will we.
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Before
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AfterSolar Services in Ontario, CA
Solar in Ontario works differently than it does twenty miles west. You’re inland, clear of the marine layer, and your panels will produce more than the same system on a Santa Monica roof. You also have real heat loads, real dust from the I-10 corridor, and a housing stock split between 1970s tract homes and brand-new Ontario Ranch construction. We answer the phone at (877) 550-6892, and the person who picks up lives with the same Inland Empire sun you do. Whether you need a first install, a battery add-on, or a repair on a system another company walked away from, give us a call.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Why Ontario Homeowners Choose Gus’s Solar
Gus Petrakis started this company in 2011 and put his name on it. That’s the whole pitch. You call, you get Gus or someone from his crew, not a rotating cast of call-center reps. Homeowners in the 91762 neighborhoods around Euclid Avenue and the 91764 tracts north of the 10 have dealt with enough door-knockers promising free panels and disappearing by Tuesday. Gus does the opposite. He gives you the math off your actual utility bill, tells you to take two weeks to think about it, and means it when he says the price won’t change. The 90-Day Done Right Promise is in writing on every job: if it’s not right, Gus makes it right, and one call brings him back. Background-checked, uniformed technicians from Gus’s own crew do the install, not a sub. A live person answers the phone 24/7. That’s not a tagline; it’s how the office runs.
Homeowners north of the 60 in older Ontario neighborhoods and families in the new builds off Edison Avenue have called us for everything from full rooftop systems to troubleshooting existing arrays. The reviews from Ontario mention the same things: honest numbers, no pressure, and a crew that shows up when it says it will.
Solar Services We Offer in Ontario
Solar Panel Installation
We design rooftop and ground-mount systems around your actual bill, not a brochure estimate. Gus quotes the year-25 output, not the day-one number. Learn more about our Solar Panel Installation in Ontario.
Solar Battery Storage & Backup
Ontario’s summer outages and time-of-use rates make battery storage a practical upgrade, not a gadget. We install Enphase and FranklinWH systems sized to your overnight draw and your appetite for backup. Learn more about our Solar Battery Storage & Backup in Ontario.
Solar Panel Cleaning
Diesel particulate from the warehouse corridor settles on panels and cuts yield more than most people realize. We clean with soft-water systems and no abrasive brushes. Learn more about our Solar Panel Cleaning in Ontario.
EV Charger Installation
As Ontario Ranch families add EVs, we wire Level 2 chargers into existing panels or pair them with service upgrades. Clean permits, clean work, done by Gus’s own crew.
Solar Panel Maintenance & Monitoring
We monitor system output and call you when production drops, not the other way around. Annual inspections catch inverter faults, loose connections, and critter damage before they eat your savings.
Solar Panel Repair
If another company installed your system and vanished, we’ll diagnose and fix it. $40 off any repair over $200, and a free second opinion on any written estimate.
Commercial Solar Installation
Warehouses, retail centers, and industrial roofs across Ontario’s logistics corridor. We handle engineering, permits, and utility interconnection without handing the work off to a sub.
Neighborhoods We Serve in Ontario
We work across Ontario, and our typical response time within city limits is same day or next morning for most service calls. The neighborhoods below are where we spend the most time:
- Ontario Ranch (91761) – new construction, battery add-ons, EV chargers
- Downtown Ontario (91762) – older homes, panel upgrades before solar
- North Ontario (91764) – 1970s-1990s tracts, first-time installs
- South Ontario near the 60 (91758) – mixed housing, repair-heavy
Why Ontario’s Climate & Housing Affect Solar
Ontario sits well inland, which means your system isn’t fighting the June gloom that caps production in coastal LA County. Summer highs regularly exceed 105°F, and the air conditioning load that comes with that is among the highest in Southern California. That shortens your payback period compared to coastal markets. But it also means your panels need to be sized for real cooling demand, not a generic average. When we quote a system in Ontario, we build it off your actual summer usage from your utility bill, because that’s where your money is.
The housing stock adds another layer. Older central and north Ontario neighborhoods in 91762 and 91764 are mostly 1970s-to-1990s tract homes, many still running original 100-amp service panels. Those typically need an upgrade before the city building department will sign off on a solar permit. We coordinate that with the same crew, so you’re not juggling an electrician and a solar company. Down in Ontario Ranch (91761), the story flips: those homes already have Title 24-mandated solar. What they need is Ontario Solar Battery Storage & Backup, system expansion, and EV charger integration as families grow into the homes. That’s a different kind of work, and it’s one we do every week.
There’s also the dust. Heavy diesel truck traffic along the I-10 and I-15 logistics corridor puts more particulate on your panels than homeowners in Claremont or Upland see. That soiling reduces yield, and in Ontario we factor it into the annual production math. A cleaning once or twice a year isn’t cosmetic here; it’s yield protection.
One more thing specific to Ontario Ranch: the HOAs there enforce design-review requirements for panel placement, color, and roof visibility before you can even submit to the city. Contractors who don’t know those CC&R steps routinely under-estimate timelines by several weeks. Gus’s crew has worked through those reviews enough times to know the process and the people. If a salesman needs an answer tonight, the answer is no. Take two weeks and think about it.
Pricing for Solar in Ontario
Honest numbers, the way Gus gives them:
- Full rooftop solar install, 5-8 kW: $14,000-$24,000 before incentives
- Battery storage add-on: $9,000-$16,000 depending on capacity
- Level 2 EV charger install: $600-$2,200 depending on panel capacity and wire run
- Panel cleaning: $150-$350 per visit for a typical Ontario home
- Repair diagnostics and service call: $95-$225; $40 off any repair over $200
No trip charge inside our own county. Seniors and veterans get 10% off, and it never expires. The price we quote is the price you pay. Bring me a bill, I’ll bring you the math.
Service Area - Cities Near Ontario
We also serve homeowners in Montclair, Upland, Chino, and Claremont. If you live just over the line, call us and we’ll tell you straight whether we can help.
Serving Ontario, CA - Our Local Coverage Area
We’re based in the Ontario area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs About Solar in Ontario
A typical rooftop install in Ontario runs $14,000 to $24,000 before incentives, depending on system size and whether your 100-amp panel needs an upgrade. Battery storage adds $9,000 to $16,000. Call (877) 550-6892 for an exact quote from your utility bill, free.
Many older Ontario homes in 91762 and 91764 still have original 100-amp service panels, and yes, those usually need an upgrade before the city permits a solar install. Gus’s crew handles the electrical and the solar together. Give us a call and we’ll tell you what your panel needs.
Yes, and it’s the most common request we get there. Ontario Ranch homes already have solar, so the work is battery storage, system expansion, and EV charger integration. We know the HOA design-review process in 91761 and can give you a realistic timeline. Call for a free estimate.
Once or twice a year for most Ontario homes. Diesel particulate from the I-10 and I-15 truck traffic settles faster here than in nearby cities, and that soiling cuts into your annual yield. We offer Ontario Solar Panel Cleaning using soft-water systems that won’t scratch the glass.
In most cases, yes. We respond same day or next morning within city limits, and a live person answers the phone 24/7. No trip charge inside our own county, and $40 off any repair over $200. Call (877) 550-6892 and tell us what’s happening.
If you’re in Ontario and want a straight answer about solar, call (877) 550-6892. Gus’s Solar serves the whole city, from the old tracts north of the 10 to the new builds in Ontario Ranch. Free estimates, no pressure, and the math off your actual bill. Take two weeks to think about it. The price will be the same.
Written by Gus Petrakis, Owner at Gus’s Solar, serving Ontario since 2011.
What happens when you call
- 1A real person answersNo phone trees - talk to a local solar pro.
- 2You get an upfront price rangeHonest numbers before anyone is dispatched. No surprises.
- 3A background-checked tech heads outLicensed & insured, typically within 1-hour.
- 4You approve before work beginsNothing starts until you say go.
What Ontario Customers Say
"Gus's own crew did the install. Not a subcontractor who had never met him, which is what the big outfit quoted me and could not tell me who would actually be on my roof."
- Aurelia Santibanez"He modelled it on my actual bill and the current export rates rather than the old ones, and told me plainly that the payback was longer than the door knockers had claimed. Then it came in about where he said it would."
- Octavius Redmond"Production dropped one spring and I did not even notice. Gus rang me, because he watches the monitoring, and had it sorted the same week."
- Sunita Balakrishnan