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Green Tech
GE Evolution Hybrid
THE CLEANEST TRAIN EVER BUILT
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GE’s hybrid locomotive cuts both emissions and fuel consumption by up to half by capturing the 207-ton train’s braking energy and using it to supplement the diesel engines to accelerate or climb steep inclines. No modern battery can capture, store, and redeliver that much power, so GE created its own: a 1,000-pound molten-salt cell, which combines sodium with a metal chloride. That chemical recipe allows more current to flow through it than other batteries, so the 20-cell system can deploy 2,000 horsepower in less than a second. The Evolution made its cross-country debut in May and carries its first commercial load in 2010. ge.ecomagination.com
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