Earthship

Earthship is a type of passive solar house developed by architect Michael Reynolds. These homes are designed to be largely self-sufficient and sustainable. They are typically constructed using natural and recycled materials, most notably used tires packed with earth, which form the load-bearing walls. Other common materials include aluminum cans and glass bottles used for decorative or non-load-bearing elements.

The design emphasizes passive solar heating and cooling. Large south-facing windows capture solar energy during winter months, while thermal mass from the earth-packed tires helps regulate indoor temperatures. Natural ventilation and overhangs are used to keep the interior cool in the summer. Earthships also incorporate systems for water harvesting and management, often collecting rainwater for household use and utilizing greywater for irrigation.

Wastewater is treated through a series of indoor botanical cells, which filter and purify the water for reuse. Many Earthships include integrated greenhouses, allowing for on-site food production. Energy is typically generated through solar panels and sometimes wind turbines, aiming for off-grid electricity. The overall philosophy behind Earthships is to create a dwelling that is environmentally responsible, affordable to build and maintain, and resilient in its resource management. They are found in various locations worldwide, adapted to different climates.