Frequently Asked Questions

The technical (warranty life) lifespan of the solar panel is 25 years. Most solar panels will continue to function long after 30 years. Manufacturers offer warranties of varying lengths. On average these consist of:

  • 10-year limited product warranty (materials and labor).
  • 25-year limited power warranty (typically 10 years at 90% power output and 25 years at 80% power output).
  • Workmanship and materials warranty of one or two years.
  • Batteries (non-grid systems / hybrids) roughly 5-15 years.
  • Inverter(s) warranty of between 10-12 years. Our manufacturers offer extended warranties for purchase and they can extend to 20+ years.
If your system is off-grid you must consider the limited warranties of 5-15 years of your power storage solution. The batteries do have limited warranties but as there are no moving parts involved not a lot can go wrong. If there are any inherent manufacturing problems with a cell or unit, this will most likely come to your attention well inside the warranty period.
Inverters are the single most expensive component to replace in your solar panel system. This is a component that should both be rated correctly to handle the calculated capacity and be of a high enough quality to compensate for the initial high cost. A good quality inverter can last upwards of 15 years whereas a poor quality one will only last 5, with top manufacturers claiming over 20 years usable lifespan!
Acts of God aside, there are many things outside of your control that can damage your Solar Panel system. From severe hail storms to errant falling trees. It is highly advisable that you contact your buildings insurance company and check if your PV system is covered and also to make them aware that it exists as this is sometimes a prerequisite to the cover. Most reputable insurance companies will insure your PV system for no extra charge, but some may increase it by a negligible amount. If your insurers wont cover you, don’t panic. It’s simply time to change your insurance provider.
Since solar panels have little to no moving parts, the maintenance costs for these systems remains relatively low.

Solar panels are exposed to dirt, debris, and pollution. For maximum efficiency, most manufacturers recommend that your PV array be cleaned about every six months. Cleaning can be done either by you, Hilton Head Solar, or by a specialist window cleaning company, which offer this service. We recommend cleaning your solar panels every 12 to 24 months, minimum. Depending on the accessibility and condition of the panels will depend on the cost for cleaning. Residential cleaning can average $75 to $350 per cleaning, depending on the size of the system.

During the times when your solar system is not generating power, the utility Company will supply electricity to your home or business. Depending on your consumption, you will receive your net-metering credit (kWh) at this time. For this reason, your solar system remains connected to the electric grid.
Due to safety measures for the workers fixing the power outage and your systems connection to the grid, utility regulations require your system to be shut off during power outages. This will happen automatically. When the power shuts down, your system shuts down. Hilton Head Solar offers battery back-up solutions and upgraded inverter technology that can provide limited power during a power outage.
Your system is installed with professional care. We have over 20 years combined experience installing all types of racking systems. The racking systems are installed with a roof water-tight method, we call flashing. Flashing prevents any form of water penetration into the home or business. All shingle manufacturers approve this method.
The solar panels can achieve power performance with direct or indirect sunlight. This means your solar panels will still achieve power when light is reflected or partially blocked by clouds.