text: The Mond gas could be produced very cheaply since it required only a low-quality coal, offering large savings for many processes. The production of Mond gas did not require much labor.
  The Mond gas became popularized during the industrial power generation in the beginning of the 20th century, since industries were very interested in a source of low-cost energy. The Mond gas provided a boost to the gas engine industry in particular. For example, a large gas engine that used Mond gas was 5–6 times more efficient than a standard steam engine. This is primarily because Mond gas was produced from the lowest cost coal rather than steam coal, resulting in cheaper electricity at about 1/20 of the normal price.