High-speed flywheels cut energy bill

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Acceleration - Braking - DC motors - Electric traction - Energy conservation - Energy storage - Railroad transportation - Rotors;
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The second stage in a project to install flywheel energy storage across the London Undergroud network will begin soon. A 1MW assembly is expected to become operational in January 2002. The initial trials were held last year and the results were unveiled on March 2, 2001. Complete installation is expected to cut down the energy bill of the metro by £111m over 25 years.
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