The move away from coal-fired power generation has supported the growth of other technologies to produce electricity. Discussions often revolve around renewable resources such as solar and wind, or the increased use of natural gas. Another technology also is looking for a growth curve. The use of coal substitutes, fuels specifically designed to mimic coal but with lesser environmental impact, is being studied as a way to keep coal-fired power plants operating even as the use of coal is phased out.
