The term "FGD compulsion"😷🏭 refers to the mandate for certain industries, particularly coal-fired power plants, to install Flue Gas Desulfurization (FGD) systems to reduce sulfur dioxide ((text{SO}_{2})) emissions. This compulsion has two primary interpretations based on the context: Flue Gas Desulfurization (FGD) Systems in Industry In an environmental and industrial context, "FGD compulsion" relates to regulations requiring power plants to use this technology. Purpose: FGD systems are air po