Earthship - Living Off the Grid
—Sustainable does not mean primitive-here is one of many concepts that can engage people toward creative solutions with limited resources—
The most powerful thing Earthships do is force people to think differently about how we live. If housing can be this awesome, and be beneficial to the environment, then what else can we change? What else can become more simple, cheaper and better at the same time?
It’s time for us to re-think much of what we consider normal.
Each Earthship is outfitted with one or two greenhouses that grow crops year-round, no matter the climate. This means you can feed yourself with only the plants growing inside of your house. Even the most arid of climates can provide enough water for daily use through only a rain-harvesting system. The entire roof of the Earthship funnels rain water to a cistern, which then pumps it to sinks and showers when required. That used ‘grey water’ is then pumped into the greenhouse to water the plants. After being cleaned by the plants, the water is pumped up into the bathrooms for use in the toilets. After being flushed, the now ‘black water’ is pumped to the exterior garden to give nutrients to non-edible plants.
The most brilliant piece of engineering in the Earthship is their ability to sustain comfortable temperatures year round. Even in freezing cold or blistering hot climates, Earthships constantly hover around 70° Fahrenheight (22° Celsius).
This phenomenon results from the solar heat being absorbed and stored by ‘thermal mass’ — or tires filled with dirt, which make up the structure of the Earthship. The thermal mass acts as a heat sink, releasing or absorbing heat it when the interior cools and heats up, respectively.
The large greenhouse windows at the front of the house always face south to allow the sun to heat up the thermal mass throughout the daytime.
Solar panels on the roof and optional wind turbines provide the Earthship with all of the power it needs. As long as you’re not greedily chewing through electricity like a typical first-world human, you’ll never be short of power.
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