A battery energy storage unit at Alliant Energy’s microgrid system in Boaz, WI.

Creston battery energy storage system

We plan to construct a new battery energy storage system (BESS) in Creston, Iowa. The 40-megawatt battery storage is part of our plan to increase reliability for the future. At maximum output, the Creston BESS will be able to power over 32,000 homes for four hours on a single charge. We expect to begin construction in 2027.

How will the Creston BESS work?

This battery storage system will charge from the grid when energy demand is low or directly from our Creston solar project when renewable generation is abundant. It will then discharge energy when demand increases, such as on hot summer or cold winter days. The ability to capture and store energy to use when needed improves the overall reliability of renewable resources.

We’re meeting today’s energy needs and building a stronger, more reliable energy future for all.

Energy storage FAQ

How does battery storage get us ready for the future?

Battery energy storage systems keep homegrown energy in our communities.

The Creston BESS project is another way we’ll continue to deliver safe, reliable energy and help keep bills as low as possible for all customers. With the addition of the Creston BESS, we’ll be able to better support growing energy demand today and in the future.

Learn more about energy storage
employee near battery storage equipment

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