Solar panel cleaning is one of the fastest-growing add-on services for pressure washing contractors in 2026. The market hit $1.27 billion this year and is projected to reach $1.72 billion by 2035. If you're already running a soft wash or pressure washing business, you have most of the skills to add this service -- and most of your competitors haven't figured it out yet.

The Quick Answer: What Does Solar Panel Cleaning Pay?

Here's what contractors are charging for solar panel cleaning in 2026:

Per panel: $8 to $25 (average $15)
Per home visit: $150 to $500 (typical range $250-$350)
Annual contract (2 visits): $250 to $500 per home
Hourly rate: $40 to $95 depending on market and access

A solo operator building a route of 200 recurring quarterly customers at $275 per visit earns $220,000 per year in predictable revenue. That's without doing anything else.

Why Solar Panel Cleaning Is a Real Business Opportunity

Dirty panels lose 15-25% of their power output. Homeowners who paid $15,000-$30,000 for a solar system care a lot about that. And most of them don't know who to call -- because the market is wide open.

Residential solar installations have exploded since 2015. In newer subdivisions, 20-40% of homes have panels. That's a dense route you can knock out efficiently without long drives between stops.

The cleaning frequency is also favorable. Homes in dry, dusty markets like Phoenix, Las Vegas, or Southern California need quarterly cleaning. Even in rainier markets, the minimum is twice a year. That means every customer you land is a 2-4x per year recurring relationship.

The Critical Rule: Never Use High Pressure on Solar Panels

This is where most pressure washers mess up. Standard pressure washers run 2,500-3,000 PSI. That's enough to strip anti-reflective coatings, force water into panel seals, and void most manufacturer warranties.

The safe limit is under 1,000 PSI -- and most professionals use soft wash systems running below 60 PSI with a water-fed pole and deionized (DI) water. No soap needed. The deionized water does the work and leaves no mineral residue when it dries.

If you're already doing soft washing, this is a natural transition. The technique is gentler than anything else you're cleaning.

Equipment You Need to Get Started

You don't need much to add solar panel cleaning. A basic setup runs $2,000 to $8,000 depending on how serious you're going at launch:

Carbon fiber water-fed pole (20-45 ft telescoping): reaches panels on 2-story roofs from the ground
DI (deionized) filtration tank with TDS meter: ensures spot-free water, no streaks
Solar-safe soft brush head: gentle on coatings
Portable water tank and pump: lets you work without a hose hookup

The water-fed pole is the key piece. Working from the ground is safer than being on a roof and faster to set up. Most residential systems take 45 minutes to 2 hours to clean depending on panel count and roof pitch.

How to Find Solar Panel Customers

Finding these customers is easier than you'd think. A few tactics that work:

County permit records: Solar installations require permits. Your county records office has the addresses. It's public data.
Zillow solar filter: Zillow lets you filter listings by solar panels across 84 million properties.
New subdivisions: Neighborhoods built after 2015 have the highest solar adoption rates. Drive and look -- panels are visible from the street.
Direct mail: EDDM in zip codes with high solar density. Target homeowners in $80,000-$150,000 household income brackets.

Once you get a customer, upsell an annual contract on the spot. Two visits at $275 each = $550 per home with one conversation.

Revenue Potential at Different Stages

Here's what solar panel cleaning looks like as a business at different scales:

Side service added to existing route: $10,000-$30,000 extra per year
Solo operation focused on solar: $50,000-$100,000+ annually
Small crew in high-solar market: $150,000-$250,000+
Scaled multi-crew in Phoenix or SoCal: $80,000-$400,000+

The startup equipment pays back in 2-4 months. After that, every job is high-margin with minimal chemical cost -- just water and time.

Bottom Line

Solar panel cleaning is low competition, high-margin, and growing. If you're already doing soft washing or pressure washing, you can add this service with a $2,000-$8,000 equipment investment and target solar-equipped neighborhoods in your market. The key is using the right technique -- water-fed pole, deionized water, under 1,000 PSI -- and locking customers into annual contracts from day one.

If you want to give customers an instant price for solar cleaning or any other exterior service right on your website, try QuoteSnap for free. Customers pick their service, enter their info, and get a price in 30 seconds -- and you get the lead before they call someone else.

Solar Panel Cleaning for Contractors: Add-On Service with Built-In Recurring Revenue (2026)