Xcel Energy launches groundbreaking wind-to-battery project
MINNEAPOLIS - Xcel Energy soon will begin testing a cutting-edge technology to store wind energy in batteries. It will be the first use of the technology in the United States for direct wind energy storage.
WIND BATTERY: This series of sodium-sulfur batteries will store wind power in an attempt to both make it more reliable and cheaper.
Courtesy of Xcel Energy
The energy storage in question—a series of
sodium–sulfur batteries from Japan's NGK Insulators, Ltd.—can store roughly seven megawatt-hours of power, meaning the 20 batteries are capable of delivering roughly one megawatt of electricity almost instantaneously, enough to power 500 average American homes for seven hours.
Safety Design of Single Cell
Compact Design of Module Battery
clipped from: www.xcelenergy.com 
