West Virginia tightens pollution rules for big industrial boilers and cement kilns

West Virginia has updated its air quality plan to limit nitrogen oxide emissions from large industrial facilities. This means big factories, like cement plants and power generators, must now meet stricter pollution standards during ozone season.

For years, many large industrial facilities operated under less stringent pollution controls than power plants. This rule change means a specific class of polluters must now invest in cleaner technology or reduce operations during certain months. It shifts the burden of air quality improvement more broadly across industrial sectors, not just electricity generation.