SOx

U.S. coal power plant emissions in 2023 showed dramatic reductions in air pollutants, owing mainly to coal plant closures. According to the U.S. Environmental Protection Agency (EPA), compared to 2022, sulfur dioxide emissions fell by 24%, nitrogen oxides (NOx) by 15%, carbon dioxide by 7%, and mercury by 17%. Over the years, coal plants have […]

Sulfur oxides (SO x ) have several harmful effects both to the environment, and to human and animal health. Much of the SO x in the atmosphere comes from the burning of fossil fuels by power plants and other

The U.S. Supreme Court has curbed the Environmental Protection Agency’s (EPA’s) options for limiting emissions of greenhouse gases (GHG) from power plants, an important environmental decision that could impact the federal government’s authority to enforce other regulations. The court in a 6-3 vote, with conservatives in the majority, on June 30 said the EPA does […]

Citing new technical information gleaned from a more modern modeling analysis, the Environmental Protection Agency (EPA) has proposed to withdraw a federal implementation plan (FIP) to control regional haze from four PacifiCorp coal-fired units in Utah and allow the state to revert to conditions set out in a 2015-submitted state implementation plan (SIP). The agency’s […]

Vistra Energy will shutter four coal-fired power plants—a total 2 GW—as required by Illinois’ recently revised Multi-Pollutant Standard (MPS) rule, but CEO Curtis Morgan noted the move was “inevitable” due to the changing regulatory environment and unfavorable economic conditions in the MISO market.  The company on Aug. 21 said it will close the 54-year-old 915-MW […]

New guidance issued by the Environmental Protection Agency (EPA) on Aug. 20 to help states prepare for the second implementation period of the federal regional haze program puts emphasis on “discretion and flexibilities” they can use to comply with long-standing mandates to protect visibility in federal areas.   While it is not binding, the EPA’s […]

In a bid to tamp down pollution, India’s government in December 2015 notified the country’s coal generators they would need to meet—for the first time—new emissions limits for nitrogen oxides (NOx), sulfur dioxide (SO2), and mercury, as well as tightened limits for particulate matter (PM) and water consumption. The gazetted notification gave new plants until […]