
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.


Solar & Battery
Take Control of Your Energy Bills with Solar..

Solar Cleaning
Keep Your Panels Working at Full Power

Roofing Services
Roof Repairs and Replacements You Can Rely On

HVAC
Keep Comfort all year round

Solar Repairs & Diagnostics
Full system health checks.

Solar Removal & Reinstallation
Safe R&R for roof work, upgrades, and home renovations.

Bird Netting / Critter Guard
Protect wiring and panels from pigeons and nesting damage.

Electrical Upgrades
Main panel upgrades and required electrical work
Ready to get started?

At OneSunSolution, we deliver reliable energy and home improvement solutions that help you save money, increase efficiency, and protect your home for the long term.
Whether you're switching to solar, maintaining your system, or upgrading your roof, we make the process simple, affordable, and stress-free.
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We're always here to help!
We make it easy. First, we assess your home's eligibility with a free consultation. Then we design your system, handle permits, and install — typically within two weeks. We guide you through every step with full transparency.
No! We offer $0 down financing options, so you can go solar with no upfront cost and start saving on your energy bill immediately.
We’re a one-stop shop — if your roof needs work before solar installation, we’ll handle it in-house and bundle it into your plan.
Our systems are designed to last 25+ years, and we offer warranty options up to 50 years for peace of mind and long-term reliability.


If you're one of the many Fresno homeowners who’ve invested in a solar panel system, you're already benefitting from solar power, lower electricity bills, and a more sustainable lifestyle. But if you're not regularly maintaining your solar panel setup, you could be losing efficiency, voiding your warranty, or damaging your return on investment.
So let’s answer the big question once and for all:
How do you clean your solar panels — and how often should you do it?
This comprehensive guide walks you through everything you need to know about how to clean solar panels, including best practices, tools to avoid (like pressure washing and abrasive cleaners), and what Fresno homeowners need to consider in our dry climate.
Solar panels are powered by photovoltaics, a clean technology that converts sunlight into usable electricity. For this process to happen efficiently, the glass surface of your solar panel must stay clean and exposed to as much direct sun as possible.
But in real-world conditions — especially in the climate of Central California — that glass doesn’t stay clean for long. Over time, your solar panel system accumulates dirt, pollen, debris, tree sap, pollutants, and even snow in some seasons. These block sunlight and significantly reduce energy conversion.
The National Renewable Energy Laboratory reports that buildup can cause solar panel efficiency losses of 15% to 25% or more if left uncleaned.
That means less electricity generation, more reliance on the grid, and lower savings — exactly what you were trying to avoid when you made the switch to renewable energy.
It starts by understanding what not to do.
Avoid:
Pressure washing, which can crack seals
Bleach or harsh soap that damages the coating
Vinegar, which can corrode sensitive surfaces
Hard brushes, metal tools, or anything abrasive
Cleaning solar panels is about gentleness and effectiveness — not force.
You might be wondering:
“How do I clean my solar panels safely?”
“How do you clean your solar panels without damaging the warranty?”
“How much does solar panel cleaning cost if I don’t want to DIY?”
Let’s break it down.
Before doing anything, power off your solar panel system according to the manufacturer or solar panel installer’s instructions. This prevents electrical accidents and protects your solar installations.
Is your roof flat, or steep and high? Do you have safe ladder access and a stable surface to work from? The angle of your system determines how safe it is for you to attempt cleaning yourself.
If it feels risky, call a local solar panel installer like One Sun Solutions.
Use a regular hose with a soft spray nozzle — not pressure washing — to gently rinse away loose dirt or debris. Avoid working in direct heat or under strong sun; early morning or late evening is best.
Gently scrub using a soft brush or foam squeegee designed for solar panel cleaning. Start at the top and work downward in soft lines. Avoid any abrasive motion that could scratch the glass.
If you're dealing with hard water (common in Fresno), use deionized or distilled water to avoid mineral stains that can reduce solar panel efficiency over time. These pollutants block sunlight, harming photovoltaics.
If you're wondering how much to clean solar panels, here’s the breakdown:
One-time cleaning: $150–$300 depending on roof height and system size
Maintenance plan (bi-annual): $100–$250 per visit
DIY cost: Time + tools (squeegee, brush, hose, safety gear)
You’ll find most homeowners searching terms like:
“How much does it cost to clean solar panels?”
“How much does solar panel cleaning cost in Fresno?”
Compared to what you could lose in electricity production or damage, it’s worth it.
The Fresno area has high pollen in spring, dirt and dust from agriculture, and little rain to naturally rinse panels. That makes solar maintenance more important here than in coastal cities.
Pair that with California’s NEM 3.0 billing structure and you’ve got a recipe for lost savings if your system isn’t clean.
Hiring a solar cleaning professional or certified solar panel installer ensures:
No voided warranty
Safe roof access with harnesses
Correct angle and pressure
Expert inspection of mounts and connections
Use of purified water and no damaging soap or bleach
Some solar companies even offer add-on services like thermal inspections or inverter diagnostics during cleanings.
A good rule of thumb:
Every 6 months for most homes
Every 3 months near heavy plant, tree, or dust zones
Immediately after wildfire smoke or snow events
After major advertisement spikes in pollen or dirt
Yes — most large solar companies (including Sunrun) recommend at least twice-yearly maintenance for optimal output.
Failing to clean panels can cause long-term efficiency losses, reduce your system’s lifespan, and even affect warranty eligibility.
If you claim part of your solar system as a home office energy deduction, your maintenance may be partially deductible. Check with a tax professional.
You chose solar to reduce carbon, save money, and generate clean electricity from the sunlight hitting your roof.
But if your solar panels are covered in pollen, debris, or dirt, you’re losing the efficiency and value you paid for.
Whether you clean them yourself or hire a cleaner, staying on top of solar maintenance is key to:
Lowering cost
Increasing lifetime investment value
Supporting true sustainable energy
Extending your solar panel warranty
👉 Ready to restore your system’s power? Schedule your solar panel cleaning with One Sun Solutions today — the Fresno leader in solar maintenance and cleaning services.

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