Wisconsin-based regulated electric and gas utility Alliant Energy said it expects to sign 1GW of electric supply contracts with data center providers over the next six months.

The deals were revealed in the company’s Q3 earnings call and add to 3.4GW of contracted demand the utility has with the sector. This includes deals with Google, Meta, and QTS, respectively.

The utility said that three of the five contracted data center projects are currently under construction, with Google taking transmission service in Iowa and QTS Cedar Rapids expected to complete commissioning of two buildings this quarter.

“Data centers support our expectation for greater than 60 percent contracted demand growth by 2031,” said Lisa Barton, CEO and president of Alliant.

She added that interest isn't limited to hyperscalers, with data center interest across the spectrum. “We are also seeing progress across a diversified set of load opportunities beyond large data centers, including edge data centers and manufacturing expansion in Wisconsin and Iowa,” she added.

Barton went on to contend that the utility has “an extreme level of confidence in our ability to secure the generation that we need,” and that “data centers are really engaging with the communities, and we're really pleased with that. There's a greater level of transparency.”

As a result of the influx of data center interest, the company raised its capital spending program for 2027-2030 by 19 percent, bringing it to $15.9bn. It has also revised its expected investment growth rate to 13 percent for the 2027 to 2030 planning period, up from 12 percent.

The utility also noted the impact of a $5.1 billion loan from the Department of Energy, which it estimated would provide up to $1.2 billion in cumulative customer savings over the life of the 30-year loans.

Alliant is headquartered in Madison, Wisconsin, and operates primarily through two main regulated utility subsidiaries. These include Interstate Power and Light Company, which serves Iowa, and Wisconsin Power and Light Company, which serves Wisconsin. In total, the company serves up to 1.5 million customers.