Homeowners can knock 20 to 40 percent off their electricity bills with a new wind turbine that can be mounted directly on a building. The seven-foot-wide plastic turbine has a ring around its rotors that diffuses noise and limits vibration; the company claims that the turbine is no louder than a whisper. In windy locations, its power output should be about 2,000 kilowatt-hours a year.
Courtesy of Cascade Engineering
Product: Swift wind turbine
Cost: $10,000 installed and connected to the grid
Company: Cascade Engineering
Subscribe to Continue Reading
Uh oh–you've read all five of your free articles for this month.
Insider Online Only
$19.95/yr US PRICE
Carbon Dioxide in the Atmosphere Has Passed a Worrying Threshold
Concentrations are above 400 parts per million and won’t fall below that mark for generations, according to a new report.
A Hotter World Is Poorer and More Violent
Recent research suggests climate change will lead to troubling social and economic damages, including a severe drop in global GDP.
What We’re Doing Wrong in the Search for Better Batteries
The world needs cheap, scalable batteries to support a clean energy grid—but there’s a big obstacle standing in the way.