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Rooftop-Mountable Wind Turbine From Cascade Engineering
Cascade Engineering. The rooftop-mountable Swift turbine is designed for urban and suburban homes, starting up in 8-mph winds. It can produce 1,900 kWh per year at a 13.4-mph average wind speed, says the firm, and is never louder than 35 decibels, equivalent to a whisper. The turbine measures 7 feet in diameter. 866.544.5520. www.swiftwindturbine.com.
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Stormwater Runoff Can Be Beautiful, Actually
Brooklyn’s Bergen project puts stormwater management in plain site with waterfalls and permeable gardens.
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solar sandwich
David Vandervort Architects: Silicon Energy's Cascade Series PV modules.
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