Definitions for "Fuel switching"
emission control measure that involve the exchange of a less pure fuel to a cleaner one, for example a coal type with less ash and sulphur
The substitution of one type of fuel for another, the fuel substitution may be either temporary (as in the case of a power plant that temporarily switches from coal to natural gas) or permanent (as in the case of a fleet operator who replaces gasoline-powered automobiles with electric cars).
Substituting one fuel for another based on price and availability. Large industries often have the capability of using either oil or natural gas to fuel their operation and of making the switch on short notice.