Although there had been other kinds of engines around, James Watt added a separate condenser, thereby reducing by almost 75% the fuel that had been used by previous engines. Watt’s addition to the steam engine caused its production and overall usefulness to skyrocket in the 1800s, and the development of a practical, efficient steam engine and its application to industry and transportation caused a great leap for industrialization. Its application was virtually limitless; it was used on railways, paddle steamers and steamboats and was not only used to move goods from place to place, but also to move people. The development and subsequent application of steam power was undoubtedly the greatest technical achievement of the Industrial Revolution, and was responsible for lifting industries from infancy to adolescence.