ST. LOUIS (AP) – A St. Louis utility company is pushing back on the federal government’s plan to cut carbon dioxide emissions.

Even though Ameren Missouri hasn’t filed a court challenge itself, the utility asked the Environmental Protection Agency to prevent implementation of the regulations and re-propose new ones. The company also urged Missouri Attorney General Chris Koster to join a lawsuit challenging the rules, which the Democrat did last year.

Just in case its legal strategy against the Clean Power Plan falls short, Ameren is also working to develop a plan at the state level to cut Missouri’s carbon emissions.

The Clean Power Plan will require a roughly 28 percent cut of carbon dioxide from Missouri power plants. Natural gas plants and wind and solar farms will replace coal power plants.