Passive Solar Straw Bale House Plans
Passive solar design is an energy efficient way to build a home. Learn about this innovative building method with these passive solar straw bale house plan designs!
Passive solar design uses the sun’s heat to warm the interior of a structure during winter months, while keeping the interior cool in summer. Straw bale homes utilizing this system of design will require less heating, and cooling, and will reduce electricity bills. Straw bales are used as exterior walls and provide a “super” insulation.
In the wintertime, when outside temperatures drop and the sun is low in the sky, the sun is allowed to enter the house through the south facing windows. It is best to have a concrete slab or earthen floor or some other form of thermal mass, to capture and store the suns heat throughout the day. When night comes and the temperatures fall, the heat generated during the day then radiates in the house keeping it warm and comfortable. The straw bale walls keep the interior temperature stabilized and in equilibrium during this 24 hour period.
In the summertime, when the outside temperatures rise and the sun is high in the sky, the sun is unable to enter through the south facing windows via overhangs above the windows, designed to the angle of the sun. The thermal mass, is then without a heat source and kept cool via the ambient temperature of the earth below. The straw bale walls are acting in twofold. First they are keeping the hot summer temps outside and second, they are keeping the cooler non heated air, inside. Having cross ventilation via Ceiling fans and windows strategically opened and closed will keep the air flowing and the temperature stabilized.
So how can you live in a passive solar straw bale house? Here is a list and a brief description of some of the passive solar straw bale house plans that are available on my site. Also, they are all modifiable to suit the needs of you and your loved ones.
3 or 4 Bedroom + Office and Family room / 2 ½ Bath
The Picacho Peak residence blends modern style with passive solar principles for a home that’s both elegant and efficient. A vaulted central living and dining area welcomes natural light through high clerestory windows, creating a bright, open heart of the home. The spacious kitchen features a large island with bar seating, perfect for family gatherings, and is supported by a generous pantry, laundry, and utility room for added convenience. The primary suite offers a private retreat with a vaulted ceiling, clerestory window, walk-in closet, and spa-inspired bath featuring double sinks, a soaking tub, and walk-in shower. An adjoining office or ante room provides privacy from the main living area. Two additional vaulted bedrooms with walk-in closets share a full bath and connect to a flexible family/game room, offering space for kids or guests.
Inspired by a family seeking comfort, connection, and efficient use of space, this design encourages togetherness while allowing room for privacy. Large covered porches at the front and back extend living outdoors—perfect for relaxed evenings and entertaining.
Built on a durable slab foundation (with the option for a framed floor), the Picacho Peak design emphasizes simplicity, functionality, and modern livability.
Want to make some modifications to the plans? When you click “Add to Cart” you will be able to list any modifications you wish to make prior to your purchase.