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Caterpillar offers the D7E electric drive track-type tractor using modern technology. The electric drive system developed for track-type tractors gives the D7E an optimum balance of power, efficiency, control and maneuverability. The system delivers higher productivity, reduced fuel consumption, reduced operating costs and longer drive train component life compared to other tractors in its size class. The D7E is in the 60,000-pound (27 000-kilogram) weight range and is powered by a Cat C9 engine producing 235 horsepower (175 kilowatts). Compared to the Caterpillar D7R Series II, the D7E will deliver 25 percent more material moved per gallon of fuel, 10 percent greater productivity and 10 percent lower lifetime operating costs.