Both cabins and tiny houses work well for off-grid living, but they excel in different ways. Cabins typically have more interior space for batteries, water storage tanks, and backup systems. A 600 square foot cabin easily accommodates a large battery bank and 300-gallon water tank without feeling cramped.
Cabins also have larger roof areas for solar panels. A 24 by 24 foot cabin provides 576 square feet of roof space, enough for 3,000 to 4,000 watts of solar panels. This generates plenty of power year-round in most climates. You can also add woodstoves for heat without worrying about clearances in the larger space.
Tiny houses excel at energy efficiency. Their small size means less space to heat and cool. According to U.S. Department of Energy data, a well-insulated tiny house uses 60 to 80 percent less energy than a standard home per square foot. This allows smaller solar arrays and battery banks.
A 200 square foot tiny house needs only 1,500 to 2,500 watts of solar panels for full-time off-grid living. The smaller system costs $4,000 to $8,000 installed versus $8,000 to $15,000 for a cabin system. Use our Solar Calculator to size systems for either option.
Water collection works well for both. Cabins have more roof area for rainwater catchment. A cabin with 600 square feet of roof collects about 375 gallons per inch of rain. Tiny houses collect less due to smaller roofs but also need less water due to fewer occupants.
Waste systems are similar. Both typically use composting toilets, incinerating toilets, or septic systems. Cabins have space for full-size septic tanks if needed. Tiny houses usually stick with composting toilets to avoid septic costs and complexity.