turbine – n. an engine that spins and can be used to produce electricity

chimney – n. a tall structure on a building that allows smoke to rise and escape outside

plant – n. a building or factory where something is made

convert – v. to change from one thing to another

pile – n. a group of things that are put one on top of another

manpower – n. the number of people who are available to work

decade – n. a 10-year period

coal ash – n. waste that remains after coal is burned

groundwater – n. water that is underground