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How Much Solar Do You Need [Graphic]

One Block Off the Grid took a stab at answering the question: “How big a backyard do you need to live off of the land?“  It turns out, plants like corn, wheat, fruits, grains, and vegetables take a lot of space.  Also, to offset the electricity required to power the average home in the U.S., which consumes about 11,040 kWh per year, one needs about 375 square feet of solar PV, or 25 average efficiency solar panels getting seven hours of sun.  Check out the full infographic:

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Vivint Upgrades Home Energy Offering

Yesterday Tendril and Vivint, formerly APX Alarm, announced a partnership to connect Vivint Go!Control home devices with Tendril’s home energy management technology.  The partnership is designed to give customers with a home security system the added ability to learn more about their energy use and control energy consumption.

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donQi Urban Windmill on the Side

This is the donQi urban wind turbine, which is assembled in Rotterdam.  It’s an interesting small wind product and the subject of a recent article in the September 2011 issue of Dwell.  In the article, Second to None, Jane Szita describes a Passive House near Amsterdam by architect Pieter Weijnen.  The home has some beautiful Japanese-style charred siding and a sleek-white, residential donQi.

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