The business in one offer
Who it serves
Owners of single-family homes with roof-mounted solar who live in dusty or pollen-heavy areas, near farmland, or under trees, and who notice lower output in their monitoring app. They pay because they cannot safely reach the panels and want cleaning done in a way that does not void their warranty.
What to sell first
A ground-based clean of up to 30 panels on a one- or two-story roof, using a water-fed pole and deionized water with no soap, plus before and after photos and a note of any visible cracks, loose wiring or nesting debris. Excluded: roof walking, bird proofing, repairs, electrical work, and arrays above two stories.
A ground-based method limits fall risk and makes the job reachable for one person, so insurance is simpler and the time per house is predictable. Pricing per panel up to a cap is easy to quote from a satellite view and the homeowner's panel count.
What could it cost to start?
This is an original example budget for the limited pilot described above. It is not a researched market average or a complete quote for every location.
| Item to price | Example allowance |
|---|---|
| Water-fed carbon pole and soft solar brush head | $650.00 |
| Deionization resin tank and starter resin | $420.00 |
| Hoses, reel, fittings and TDS meter | $160.00 |
| Ladder stabilizer, harness and gloves | $190.00 |
| General liability insurance deposit | $500.00 |
| Printed door hangers and booking page | $110.00 |
| Example total | $2,030.00 |
What this assumes—and excludes
Assumes a pickup or SUV that can carry poles and a water tank, and access to the customer's outdoor spigot. Excludes business license fees, a water hauling trailer, resin refills beyond the first, owner pay and advertising. Get your own equipment and insurance quotes before committing.
Collect actual supplier, insurance and local-authority information. Add a reserve for delays and unexpected costs; the example total is not a funding recommendation.
How the unit economics work
At an assumed $179.00 per house and $15.00 in direct costs, contribution is $164.00 before monthly fixed costs, owner pay and taxes. With 1.6 all-in working hours per unit, that is $102.50 per delivery hour before those deductions. These inputs illustrate the arithmetic; they do not establish a market price or expected earnings.
The example also allows $100.00 in monthly fixed costs. Include unpaid acquisition and administrative time when deciding whether the offer is worthwhile.
Try your own numbers
These are editable planning assumptions, not prices we have verified. Calculations stay in your browser.
Operating result = (price − direct cost) × units − monthly fixed costs. Before owner pay, taxes, financing and startup recovery. At these inputs, delivery requires 16 hours per month, plus any work not included in your per-unit estimate. Sales volume is a scenario, not a forecast.
How to find the first customers
Test a small offer before scaling traffic. Record the source of each enquiry, whether it fits the offer, and whether the buyer pays.
- Contact local solar installers that do not offer cleaning and ask if they want a referral partner for post-install service calls. Show them your method and that you never walk on roofs.
- Leave door hangers only in neighborhoods with visible rooftop arrays, following any local rules or HOA policies on flyers. Include your per-panel price and that you use purified water.
- Offer a spring pollen-season package to homeowners in a single subdivision at a group rate when five or more houses book the same day.
- Ask customers if you may photograph their clean array for your website. Record each new booking's source so you know which tactic earns the most work.
What to validate before spending more
- Read the cleaning guidance from the two or three most common panel brands in your area. Confirm which methods, water types and cleaning agents are allowed before you price or advertise.
- Clean two friends' arrays and time every step, including filling and testing water. Check total dissolved solids readings to confirm your resin keeps water spot-free.
- Ask your water utility or city whether there are rules about runoff from rooftop washing, especially during drought restrictions or watering limits.
- Get insurance quotes that specifically mention solar panels, and ask whether damage to panels or roofs is covered when you work from the ground.
The operational catch
Resin cost catches new operators off guard. Hard water exhausts deionization resin fast, and if your water is not pure enough, panels dry with spots that look worse than before. Test your tap water's TDS reading before buying equipment, price resin per house, and schedule work for cooler morning hours to avoid thermal stress on hot panels.
A practical way to fund the first step
Rent or borrow a water-fed pole setup for the first few jobs if a window cleaning supplier offers it, and collect payment on completion. Use the first month's revenue to buy your own resin tank once you know your local water quality.
Separate cash already available from money still to earn. Count only proceeds after direct expenses, and do not spend customer funds needed to fulfill their existing orders.
Questions before you start
Will cleaning increase my customer's power output?
It depends on how dirty the panels were and on weather, shading and system design. Do not promise a percentage. Suggest customers compare their monitoring app readings on similar sunny days before and after.
Can I use soap?
Some panel makers restrict cleaning agents. Purified water and soft brushes are a safe default. Check the manufacturer's manual before using any product, and never use pressure washers or abrasive pads.
Can I claim the service is eco-friendly?
Only with specific, accurate details, such as no detergents used. Broad environmental claims can mislead customers, and FTC guidance says such claims should be qualified and backed up.
Source-backed checks
These references support the specific checks below. They do not endorse this business idea or substantiate the example prices, costs or demand.
The FTC's Green Guides summary cautions marketers against broad, unqualified environmental benefit claims that are hard to substantiate. Federal Trade Commission: Environmental Claims: Summary of the Green Guides.
OSHA's heat page explains that working in hot outdoor environments can lead to heat-related illness and outlines prevention. OSHA: Heat: Working in outdoor and indoor heat environments.
SBA recommends that businesses assess their risks and speak with a licensed agent to choose suitable insurance coverage. U.S. Small Business Administration: Get business insurance.
- Environmental Claims: Summary of the Green GuidesFederal Trade Commission · Reference checked September 8, 2026
- Heat: Working in outdoor and indoor heat environmentsOSHA · Reference checked September 8, 2026
- Get business insuranceU.S. Small Business Administration · Reference checked September 8, 2026
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