Energy storage FAQs

Energy storage systems are a lot like batteries in a cell phone, laptop or car. The storage system is connected to the grid or a generation source like solar or wind. It charges when there is extra energy or when energy demand is low. The stored energy can then be used when power is needed, such as on hot summer days and cold winter nights.

Energy storage is an exciting, evolving field that will help utilities meet customer needs into the future.

It's important for utilities to have flexible energy delivery options that work with existing systems and resources. Energy storage systems are one more way we can deliver reliable and cost-effective energy for our customers.

Our battery projects include large systems that help meet peak energy demands and smaller, community-based projects designed to improve reliability, like our Boaz Microgrid.

Sustainability is important to us. We have decommissioning plans for all our energy sites and equipment. 

Our goal is to recycle or identify secondary markets for battery equipment when it reaches end-of-life. Batteries contain valuable components and minerals that can be reused to make new batteries. Federal and private investments are expanding commercial battery recycling efforts in the U.S.

Energy storage systems are a great complement to our diverse mix of generation sources. Storage systems can deliver power when needed and don't generate any airborne or water pollution.

Our large energy storage systems do not contain any toxic heavy metals such as mercury, cadmium or lead. As energy storage technology advances, we will continue to prioritize sustainability and efficiency.

We have safely and efficiently operated battery systems across Iowa and Wisconsin for years. These energy storage systems are designed to operate through all types of weather and environmental conditions.

Safety is a top priority at Alliant Energy. Energy storage systems are extremely safe when properly maintained and operated. We test all systems prior to operation to make sure they meet rigorous safety standards. 

After installation, our operators monitor the systems using on-site sensors and off-site monitoring. The systems also have built-in safety features and fire suppression. Our skilled crews are trained to identify and prevent potential risks.

We partner with local fire departments and first responders to share site layouts, facility features and safety plans. In the unlikely event of an issue at any of our energy storage facilities, we will respond rapidly and activate resources to keep communities safe.

The typical noise level from an operating battery storage site is minimal. It is comparable to a home air conditioning unit. 

Just like batteries in home devices, utility-scale batteries store chemical energy and do not emit any radiation. Properly designed and grounded batteries have no stray voltage.