Set it and forget it.

What does a real maintenance plan cover, and why does cadence matter?

Solar is often sold as install-it-and-forget-it, and for the panels themselves that is mostly true. The rest of the system is not. Connections work loose under years of thermal cycling, inverters age on a predictable curve, monitoring quietly stops reporting, and soiling creeps up on output a fraction at a time. A maintenance plan is simply catching those things on a schedule instead of discovering them from a surprise power bill.

A proper plan covers the electrical and the physical: inverter status and error-log review, DC/AC checks, a torque check on lugs and rail hardware, connector and MC4 inspection, a soiling assessment and cleaning as needed, a thermal or visual scan for hot cells, and confirmation that your monitoring is actually reporting. For most Central Florida homes, once or twice a year is the right cadence — the higher end if you are under heavy tree cover or near dust, salt, or wildlife.

The real ROI: catching a small problem before it becomes a dead system

The math on maintenance is about avoided loss, not just tidy panels. Panel output already creeps down about 0.5% a year on its own (NREL), and that is the loss you accept. What you do not have to accept is the invisible loss on top of it — a failing microinverter dragging one panel, a loose connector adding resistance and heat, or a monitoring gateway that went offline eight months ago so nobody noticed production fell 15%.

Because inverters tend to fail toward the back half of their 10-to-15-year life, a system in year eight or nine is exactly when a scheduled check pays for itself. Finding a warm connector during a routine torque check is a five-minute fix; finding it after it has arced and scorched the junction box is a very different bill — and a safety issue.

Why torque and connection checks are the unglamorous part that matters most

The least exciting item on the checklist is the one that prevents the worst outcomes. Every electrical connection on a solar system carries current, and current through a loose or corroded connection produces heat. Over years of Florida heat-soak and thermal expansion, lugs and terminals back off from their original torque spec.

• Loose connection = resistance = heat — the root cause behind a large share of the arc-fault events Sandia and IEA PVPS document.
• Torque to spec, on a schedule — every connection checked against the manufacturer's value, not guessed by feel.
• Documented each visit — so you have a record of what was checked, when, and what it read.