Two megawatts of batteries connected to power grid
Giant cousins of your laptop batteries are going to provide storage to the electricity grid.
Altairnano on Tuesday said that Indianapolis Power & Light, a division of utility AES, completed tests for using two megawatts worth of its batteries to maintain grid frequency.
The two one-megawatt units--each housed in a semi-trailer--can store up to 15 minutes worth of electricity, or 250 kilowatt-hours each. (The average U.S. home consumes 920 kilowatt-hours per month.)
The tests are important because they demonstrated that lithium-ion batteries can be used for utility-grade energy storage. Right now, most short-term energy storage is done by lead … Read more
