Most homeowners and businesses hire a qualified technician for this job, and for good reason: a single visit that covers cleaning, inspection, and minor tune-ups typically runs anywhere from $300, depending on system size, roof access, and any repairs uncovered. In January 2026 the estimated cost to Clean Solar Panels starts at $129 - $163 per panel. Use our Cost Calculator for cost estimate examples customized to the location, size and options of your project. Set Project Zip Code Enter the Zip Code for the location. NLR analyzes the total costs associated with installing photovoltaic (PV) systems for residential rooftop, commercial rooftop, and utility-scale ground-mount systems. This work has grown to include cost models for solar-plus-storage systems. NLR's PV cost benchmarking work uses a bottom-up. Each year, the U. solar photovoltaic (PV) systems to develop cost benchmarks. Solar panels can lower your electricity bill by 75% or more, but the upfront investment is significant. Most homeowners spend between $12,600 and $33,376 to install a complete residential solar system in 2026, with. In this guide, we'll break down average solar costs per square foot in 2025, show how they compare by home size, explain why this metric has limits, and give you expert tips to reduce your price.