Off-Grid Solar for Cabins, Camps, and Remote Shelters

Small off-grid solar systems for cabins, desert camps, guard rooms, and remote shelters are among the most common applications in the Middle East and Africa. These systems need to be simple, reliable, and often portable. Here is how to design one that works.

Typical Power Needs

Appliance	Watts	Hours/Day	Wh/Day
LED lights (x4)	40	6	240
Phone chargers (x2)	20	3	60
Small fan	50	8	400
Radio	10	4	40
Small TV (24-inch)	30	3	90
Total			830 Wh

Under 1 kWh per day — a small, affordable system handles this easily.

Recommended System for Basic Cabin

• Inverter: Felicity IVPS 1.5kVA (12V or 24V)
• Panels: 2x 400W monocrystalline (800W total)
• Battery: 1x 12V 200Ah GEL or 1x 24V 100Ah LiFePO4
• Estimated cost: $600-$1,200
• Autonomy: 2-3 days without sun

Portable vs Permanent Installation

Portable Systems

For desert camps and temporary shelters that move seasonally, use folding solar panels on adjustable stands, a compact inverter, and wheeled battery enclosures. The Felicity IVPS 1.5kVA weighs only about 8 kg, making it easy to transport.

Permanent Systems

For fixed cabins and guard rooms, mount panels on the roof with standard brackets, wall-mount the inverter, and secure batteries in a ventilated cabinet.

Design Tips for Small Systems

• Use 12V DC appliances (LED lights, USB fans) where possible — they bypass the inverter and save 5-10% energy
• Install a timer on non-essential loads to prevent accidental overnight drain
• A single 200Ah GEL battery provides about 1.2 kWh of usable energy at 50% DoD — enough for 1.5 days of the load above
• In desert camps, shade your battery and inverter with a reflective tarp to reduce heat stress

Scaling Up

If you add a small refrigerator (100W, 12 hours = 1,200 Wh) or a cooler, your daily consumption jumps to about 2 kWh. Upgrade to a Felicity IVPS 3kVA with a 24V battery bank and 4 panels (1,600W) to handle this comfortably.