- Associated Press - Wednesday, July 15, 2015

IOWA CITY, Iowa (AP) - Interstate Power and Light, Alliant Energy’s subsidiary that serves hundreds of thousands of customers in Iowa and Minnesota, agreed Wednesday to make changes to several Iowa coal-fired power plants under a Clean Air Act settlement.

Here’s a look at what’s to come:

- The company will continuously operate baghouse and scrubber systems that have been installed at its two largest coal-fired plants in the state, Ottumwa and Lansing, to reduce emissions.

- Additional emission-control equipment will be installed by Dec. 31, 2019, to reduce nitrogen oxide emissions at its Ottumwa plant.

- The largest unit at its Prairie Creek Generation Station in Cedar Rapids will convert to natural gas in 2017. Smaller units there will stop burning coal by the end of 2025.

- The Burlington Generation Station will stop burning coal by the end of 2021, transitioning to natural gas or retiring.

- The company will not revive the use of coal at plants in Clinton, Dubuque and Marshalltown, which have already transitioned to natural gas.

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