Panels are your renewable generation — the part of the system that refills the batteries. For a shelter, durability and the ability to deploy or conceal panels often matter as much as raw wattage. Here is how to choose.
What to look for
- Wattage vs. mounting area. More watts need more space. Measure your usable roof or ground area before buying.
- Rigid vs. foldable. Rigid panels maximize output per dollar for a permanent array; foldable panels deploy fast and stow flat, which suits a low-profile shelter.
- Durability and weather rating. Panels live outside in all conditions. Look for solid framing and good hail/wind ratings.
- Compatibility. Confirm the panel voltage and connectors match your charge controller and battery bank.
The main options
- Rigid panels — the Renogy 100W Solar Panel is a proven, affordable building block. Wire several together for a fixed array sized to your daily needs.
- Foldable portable panels — an Foldable Portable Solar Panel deploys in minutes and packs away, ideal when you want to keep the shelter's surface signature low or move panels to follow the sun.
Don't skip the charge controller
Panels do not connect straight to batteries — you need a charge controller between them. An MPPT controller like the Victron SmartSolar MPPT Controller extracts noticeably more energy than a cheaper PWM unit, especially in less-than-ideal light. It is one of the highest-return upgrades in a solar setup.
Size for cloudy reality
Rate your array for bad days, not perfect ones. Panels produce a fraction of their rating under clouds, in winter, or at low sun angles. Oversizing your array relative to your daily load total is what keeps the batteries topped up when the weather does not cooperate.