What is the most powerful freight train in the world?

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As of 2026, the title for the most powerful freight train (locomotive) is often held by the China Railway HXD1 or the Russian 4ES5K "Yermak". The 4ES5K is a massive four-section electric locomotive that produces a staggering 13,120 kilowatts (roughly 17,600 horsepower). It is designed to pull heavy freight trains across the challenging grades of the Trans-Siberian Railway. In the world of diesel-electric power, the General Electric (Wabtec) AC6000CW remains one of the most powerful single-engine units ever built, producing 6,000 horsepower. However, when we talk about "most powerful," we often refer to the total tractive effort of a combined train. For example, BHP Billiton in Australia famously ran a record-breaking iron ore train powered by eight locomotives that pulled a total weight of nearly 100,000 tonnes. In the U.S., the legendary Union Pacific "Big Boy" No. 4014 remains the most powerful operating steam locomotive in history, often touring in 2026 to celebrate rail heritage. While electric units in China and Russia hold the raw power records, the heavy-haul iron ore trains in Australia represent the peak of total "train force."

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