Do your solar panels need cleaning, or a different kind of attention?

Start with the information you already have

A dusty-looking panel and a system problem are not the same observation. Open the monitoring account and make sure it is recording data. Save a screenshot of an error message or an unexpected change. Note when it began and whether the app has recently lost its connection.

Ask the installer how to compare production fairly across seasons and weather conditions. Comparing a cloudy week with a clear one will not answer the maintenance question. If you inherited the system with the home, establish account access and service contacts before you need a repair.

Get a recommendation for this equipment

Find the panel and inverter manuals, or ask the manufacturer for the correct owner guidance. Request a written explanation of any proposed cleaning method. Ask what products, tools and roof access arrangements the company will use, and whether those methods fit the warranty.

DOE's wildfire resilience guidance warns that high-pressure hoses and inappropriate cleaning tools can damage solar modules. This is a reason to use a qualified provider and equipment-specific instructions, not to improvise a roof-cleaning routine. If ash or storm damage is involved, explain that when arranging the assessment.

• What evidence suggests cleaning is needed?
• Will you inspect for a separate equipment issue?
• How will you document the condition and completed work?

Know what a service visit does not answer

A cleaning invoice does not automatically establish that the roof attachments, wiring or inverter are in good condition. Ask what the visit includes and which concerns need a different qualified professional. Keep the distinction between appearance, production and physical condition clear.

If production remains unusual afterward, send the before-and-after record to the system's support contact. Do not open electrical cabinets or disconnect components to investigate. Solar equipment requires its own safety procedures, and a homeowner article cannot substitute for training on the installed system.

Make maintenance easy to continue

Create a solar folder with installation records, warranty terms, monitoring access instructions and service history. Store passwords securely rather than putting them in a public household document. When a technician recommends the next inspection, record why that timing fits your location and equipment.

For a leased system or PPA, check who authorizes and pays for service before hiring another company. If roof work is planned, bring both providers into the discussion early. Your best owner task is to notice, document and ask. You can stay involved without climbing onto the roof or guessing which cleaning promise will improve the bill.

• Next step: confirm monitoring access and ask your provider for the approved maintenance instructions.