Beacon Power says its latest flywheel will provide one megawatt of storage to the electricity grid by the end of the year.
The company's carbon fiber flywheels, which are one meter in diameter, spin constantly at up to 16,000 revolutions per minute--a surface speed of about Mach 2, Beacon CEO William Capp explained Friday. Each 8,000-pound unit can provide 100 kilowatts of electricity for 15 minutes.
Combining 10 of those flywheels will give a utility one megawatt of storage, or 25 kilowatt hours--the equivalent of what a home consumes in a day.
Fifteen minutes of storage may … Read more