Rockport, Cook and Energy Diversity

Rockport Plant Photo

I&M's mission is to provide safe, reliable, low-cost energy to our customers. Reliability requires enough generated energy to power all of our customers' homes, businesses and factories when they are at peak demand 24/7/365. Because the sun doesn't always shine and the wind doesn't always blow, utilities like I&M need to make sure we have enough energy available from plants powered by other resources.

The Rockport plant’s two units are each capable of generating up to 1,300 megawatts of energy – enough to power more than one million homes – at a low cost, which helps keep I&M's rates below state and national averages.

“Indiana runs on coal. Let’s apply technology and innovation to find new ways to unleash this abundant source of power by burning coal cleanly while keeping Hoosiers employed and factories humming.” Gov. Eric Holcomb, State of the State Address, Jan. 17, 2017


Why does I&M continue to operate the Rockport plant?

Rockport is one of I&M’s two plants that are able to generate 24/7/365 to make sure we can meet all of our customers’ needs at peak demand – known as the “base-load”: I&M's highly efficient coal-fueled Rockport Plant in southwestern Indiana, and the Cook Nuclear Plant in Bridgman, Mich. Rockport is needed to make sure all demand is met, especially when the sun isn’t shining and the wind isn’t blowing.

What about Rockport’s emissions?

The Rockport Plant meets all federal laws governing emissions. Those laws are designed to protect the environment and people, with a margin of safety.

Rockport has a variety of emission-fighting technology, and the plant has reduced emissions significantly. From 2000 to 2019:

  • Mercury emissions are down 97 percent.
  • Sulfur dioxide has dropped 77 percent.
  • Nitrogen oxides are reduced by 83 percent.
What is I&M doing to further cut emissions?

In recent years, I&M added dry-sorbent injection technology to reduce the emissions of sulfur dioxide. I&M installed selective catalytic reduction (SCR) technology on Unit 1 and is installing the technology on Unit 2. This uses the same principles of your car’s catalytic converter to further reduce nitrogen oxides.

Is the Rockport Plant old?

The Rockport Plant, built in the 1980s, is one of the youngest and most technologically-advanced coal-fueled plants in Indiana. What impact does the plant have in the Rockport community?

I&M contributes greatly to the community. With more than 200 employees, I&M is one of the top employers in Spencer County. The plant pays more than $5 million a year in property taxes alone. Rockport provides rent-free space to several local non-profits, and it provides financial and in-kind contributions to other local non-profits. The plant is the main supporter of the Cliff Hagan Boys and Girls Club. The plant and its employees contributed to the local United Way for 2019.

Why does I&M have so many different types of generation sources?

I&M produces energy from the sun, from wind, from running water, from nuclear power and from coal. This diverse energy mix provides flexibility for I&M to adapt to changes in the market and regulatory atmosphere.

This robust energy mix is a major factor in I&M’s dedication to reliable service at affordable rates.

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