The control of emissions from power plants is an essential process which safeguards against pollutants being put into the atmosphere by such stations. Its main functions include capture, treatment and disposal, or change into other useful products such as sulfur dioxide, nitrogen oxides and dusts. Pollution output from power plant emissions control systems is a major focus of government regulations in developing nations. To help redirect and reduce this trend from becoming worse than it already is, we have developed a range of technologies that work well for solving problems at the source. The main problems that have constrained technological advances, and held back economic development in this field until recently stemmed in part from plant layout constraints which limited the options for equipment configuration. New technology has overcome these constraints thanks to approaches like modular layout which allow users to make best use of existing space instead of having everything crammed together or spread out due to lacklusters of room limitations. Technological features of emissions control systems encompass advanced scrubbers, electrostatic precipitators, and selective catalytic reduction technologies. The utilization of fossil fuels such as coal, oil, and natural gas for power plants give rise to particulate and gaseous emissions in large quantities. In order to address such issues, these power plants now have to install flue gas desulfurization systems which reduce SO2 emissions by 95% or more. These systems are integral to coal-fired, gas-fired, and other fossil fuel-based power plants, enabling them to comply with environmental regulations and reduce their environmental footprint. The applications of emissions control are widespread, from large-scale utility plants to industrial facilities, aiming to improve air quality and public health.