FAQs & Guides

Passive design uses building orientation, shading, and materials to maintain comfortable temperatures with minimal mechanical heating or cooling.

For off-grid homes, passive design directly reduces the size of solar and battery systems required to maintain comfort year-round.

Consider site orientation, window placement, and thermal mass during the planning stage for maximum benefit.

Strategic landscaping can reduce heating and cooling loads by providing shade, wind protection, and evaporative cooling around your home.

Deciduous trees on the northern side provide summer shade while allowing winter sun through bare branches.

Windbreaks on prevailing wind sides reduce heat loss and improve outdoor comfort.

Cooling is often the largest discretionary load in off-grid homes. Reducing cooling demand has a direct impact on system size and cost.

Combine passive cooling strategies with efficient fans and air conditioning used only when necessary.

Ceiling fans can make a room feel several degrees cooler while using a fraction of the energy of air conditioning.

Designing your home to make the most of natural air flows is a simple way to reduce the temperature in your home. Having air flow through the house can draw in cooler air, push out high level warm air, and assists the natural cooling mechanisms used by the body.

The most effective way of creating this air flow is with cross ventilation. This is when windows are positioned in the house to allow for air to flow naturally from one side of the house to the other. Natural ventilation should be designed so warm air trapped at ceiling level can be easily expelled through high open window outlets.

Ventilation will also help to cool any thermal mass materials used in the house (see section on thermal mass below). Ceiling fans can increase air flow and may be used instead of air conditioning in some cases.

Insulation slows heat transfer through walls, ceilings, and floors — keeping your home cooler in summer and warmer in winter with less energy input.

Thermal mass materials like concrete, brick, and stone absorb heat during the day and release it slowly at night, moderating indoor temperatures.

Combining good insulation with appropriate thermal mass is one of the most effective strategies for reducing off-grid energy requirements.

Kitchen appliances — particularly ovens, cooktops, and refrigerators — are among the highest energy users in any home.

For off-grid living, choosing efficient appliances and using them strategically can significantly reduce system size.

Gas or induction cooktops, efficient fridges, and batch cooking during sunny hours all help manage kitchen loads.

Washing machines and dryers can draw significant power, especially when heating water. Front-loaders generally use less water and energy than top-loaders.

Line-drying clothes eliminates dryer use entirely — a simple and effective off-grid strategy.

Run laundry during peak solar production to use surplus energy rather than draining batteries.

Pool pumps and spa heaters are among the largest discretionary loads on off-grid systems. Variable-speed pumps and solar pool heating dramatically reduce consumption.

Running pool pumps during solar hours and using covers to retain heat can cut energy use by more than half.

We recommend discussing pool and spa plans during system design so your off-grid system is sized appropriately from the start.