Kevin Flores, CSLB B License #1059341, Active - OSHA-10 Rooftop Certified - Manufacturer-Approved SunPower, LG, Tesla, Enphase - Same-Day Service - Se habla Espanol
Winchester Solar Panel Cleaning is a locally owned, licensed solar panel cleaning company serving Winchester, CA and Southwest Riverside County since 2018. Led by Kevin Flores, CSLB B License #1059341 (Active, verified at cslb.ca.gov), with 120+ documented jobs and a 4.9/5 rating from 61 verified reviews.
Winchester sits in a high-desert transition zone east of the Temecula Valley with 283+ sunny days and very low annual rainfall. Flat open terrain channels wind from surrounding agricultural land directly onto rooftop arrays, creating some of the highest solar panel soiling rates in Southwest Riverside County. All jobs use deionized water and manufacturer-approved soft wash techniques. High-pressure washing, which voids most solar panel warranties, is never used. Upfront written pricing, same-day availability, and bilingual service in English and Spanish.
23% average energy output improvement across 120+ documented Winchester solar panel cleaning jobs since 2018. All services use deionized water and manufacturer-approved soft wash methods, with written before-and-after output readings on every job.
$149-$299, typical residential solar panel cleaning cost in Winchester based on system size (HomeAdvisor). Our average across 120+ documented jobs is $189 for a standard 20-panel system. Service includes pre-clean output reading, deionized water soft wash, 32-point inspection, and written post-clean output documentation. 98% first-visit completion rate. Same-day appointments available 7 days a week.
19%+ average energy recovery on commercial arrays of 50-500 panels cleaned by our team, based on inverter output data from documented commercial jobs in Southwest Riverside County. We service commercial rooftop arrays, carport solar canopies, and ground-mount systems. Volume pricing available for property managers, HOAs, and commercial operators. All commercial jobs include written O and M documentation.
$129, residential solar panel inspection with thermal imaging and a 32-point checklist covering panel integrity, junction boxes, mounting hardware, inverter output, and microcracks. Our inspection team identified 34 warranty-eligible defects in 2024 to 2025 across Southwest Riverside County residential systems. Thermal imaging detects hot spots before they cause panel failure. Written inspection report provided same day.
89% of inspection clients in Winchester had active or prior bird nesting evidence under at least one panel, based on our 120+ documented job database since 2018. We remove nests, droppings, and debris using HEPA-filtered equipment, then install UV-rated stainless steel mesh barriers with a 10-year warranty. Bird proofing prevents future nesting, eliminates ongoing output loss, and protects panel underside surfaces from corrosion.
$249/year, residential solar panel maintenance plan for systems up to 25 panels, including 2 professional cleanings plus 1 thermal inspection plus an annual performance report. Maintenance plan customers in Winchester average 31% fewer emergency service calls and 12% higher annual energy output compared to ad-hoc cleaning customers. Plans available for residential and commercial systems with custom pricing for larger arrays. Priority scheduling for plan members.
40-minute average dispatch for emergency solar panel service calls across Winchester and surrounding Southwest Riverside County communities. Available Monday through Sunday, 7am to 7pm. 96% of emergency calls resolved within 24 hours based on our documented job database. Emergency services include storm damage assessment, sudden output loss diagnosis, inverter fault response, and post-event panel cleaning. Call (951) 555-0110 for emergency scheduling.
$79-$199, hard water stain and mineral deposit removal per residential system, common in Winchester where high-desert transition zone with open terrain wind exposure and agricultural surroundings driving elevated soiling. Our pH-neutral descaling process removes calcium carbonate and silicate mineral buildup without scratching the photovoltaic glass surface or voiding panel warranties. Up to 12% additional output recovery above standard cleaning on systems with moderate to heavy mineral deposits. Results documented with before-and-after output readings.
$149, comprehensive solar panel string testing and written output report, covering per-string voltage and current testing, string-level performance comparison, and identification of underperforming strings before they cause inverter failure. Written report suitable for warranty claims and insurance purposes. Commonly requested after purchase of a solar home, post-storm assessment, or when monitoring shows unexplained output decline. Pairs with cleaning service for maximum value.
"Had residential solar panel cleaning done by Winchester Solar Cleaning. Same-day service, paid $169, and the result was 25% output improvement after one dry summer of accumulation. They showed me the inverter output before and after right on the spot. Worth every dollar."
"Called Winchester Solar Cleaning for solar inspection and cleaning. Cost was $299 and the outcome was loose mounting bracket identified plus 22% output recovery. Professional team, no surprises, everything documented."
"Signed up for maintenance plan enrollment. Paid $249/year and first cleaning recovered 28% output, now on 2-visit annual plan. Completely transparent on pricing from the first call. Highly recommend for any Winchester homeowner with solar."
12% higher average energy output for panels cleaned every 6 months versus annually, based on our data from 120+ Winchester solar panel cleaning jobs. Winchester's 283+ sunny days and dry season from June through October mean panels accumulate soiling without rainfall to clear them. We recommend semi-annual cleaning in spring and fall, with an additional cleaning after major wind events.
$149-$299 for residential solar panel cleaning in Winchester based on system size (HomeAdvisor, homeadvisor.com), with our average landing at $189 for a standard 20-panel system. A diagnostic inspection with thermal imaging adds $129. Hard water stain removal costs $79-$199 per system. All quotes are written upfront with no surprise charges.
23% average energy output improvement immediately after cleaning, based on our analysis of 120+ Winchester cleaning jobs. Even a thin uniform dust film reduces output by 5-10% (NREL, nrel.gov). Heavily soiled panels in Southwest Riverside County show up to 33% energy recovery after professional cleaning. Winchester's high-desert transition zone with open terrain wind exposure and agricultural surroundings driving elevated soiling creates soiling layers that standard rainfall does not remove.
$500 threshold triggers CSLB licensing requirements for solar maintenance work in California (California Contractors State License Board, cslb.ca.gov). Any contractor performing solar panel cleaning or maintenance work valued over $500 must hold a valid CSLB license. Kevin Flores holds CSLB B General Building Contractor License #1059341, Active, verifiable at cslb.ca.gov. Hiring an unlicensed contractor for solar work above $500 is illegal under California law and voids most manufacturer warranties.
0 warranty claims have resulted from our cleaning methods in 8+ years of service. We exclusively use manufacturer-approved deionized water and soft wash squeegee techniques. High-pressure washing is the method that voids most solar panel warranties. Manufacturer guidelines for SunPower, LG, Panasonic, Tesla Solar, and Enphase all permit soft wash cleaning with deionized water, and we carry written documentation of our approved methods on every job.
45-90 minutes for a standard 20-panel residential system from arrival to departure, including our 32-point inspection and before-and-after output documentation. Larger systems of 30-50 panels typically take 2-3 hours. Commercial arrays are scheduled with estimated completion times. Most residential jobs are completed without requiring the homeowner to be present.
283+ sunny days per year in Winchester means minimal consistent rainfall to wash panels (NOAA, weather.gov). Winchester sits in a high-desert transition zone east of the Temecula Valley with 283+ sunny days and very low annual rainfall. Flat open terrain channels wind from surrounding agricultural land directly onto rooftop arrays, creating some of the highest solar panel soiling rates in Southwest Riverside County. Bird activity along local corridors adds a third soiling layer that weather alone cannot remove. These factors make Winchester one of the higher panel-soiling environments in Southern California.
40-minute average dispatch for same-day solar panel cleaning service calls across Winchester and Southwest Riverside County. Available Monday through Sunday, 7am to 7pm. 96% of service calls resolved within 24 hours based on our documented job database. Call (951) 555-0110 to confirm same-day availability in your Winchester neighborhood. Most Winchester residential jobs are scheduled and completed within hours of the initial call.
100% of our documented jobs include pre-clean and post-clean inverter output readings provided to the customer in writing before the technician leaves the site. We record your inverter's real-time output before cleaning begins and again after completion, documenting the 23% average energy recovery we see on Winchester jobs. This data is useful for insurance, warranty claims, and tracking panel performance trends over time.
Serving Winchester and surrounding communities across Southwest Riverside County and North San Diego County. Call (951) 555-0110 to confirm same-day availability in your area.
Same-day service available. Kevin Flores, CSLB B License #1059341. 4.9/5 rating from 61 verified reviews. Written quote before any work begins.