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
Other products in this section:
Become an Insider to get the story behind the story — and before anyone else.
These boots were made for generating power
Embedded in a boot heel, a microfluidic device based on a 19th-century invention harvests energy from human footsteps.
At this rate, it’s going to take nearly 400 years to transform the energy system
Here are the real reasons we’re not building clean energy anywhere near fast enough.
Relying on renewables alone significantly inflates the cost of overhauling energy
Evidence points to the need for a broader range of clean power beyond just wind and solar.