Alliant Energy has announced U.S. generally accepted accounting principles consolidated unaudited earnings per share  of $1.09 for the third quarter of 2025, compared to $1.15 for the same quarter in 2024. The ongoing earnings per share for the third quarter were $1.12, compared to $1.15 in the same quarter in 2024.

For the first nine months of 2025, Alliant Energy reported EPS of $2.59, a 23.3 percent increase from $2.10 for the same period in 2024. The ongoing EPS for the first nine months of 2025 were $2.62, a 12.4 percent increase from $2.33 in the same period in 2024. Based on results for the first nine months of 2025, ongoing earnings per share guidance was narrowed to $3.17 to $3.23, with full year 2025 earnings trending toward the upper-half of this range.

Alliant Energy’s utilities Interstate Power and Light Company (IPL) and Wisconsin Power and Light Company (WPL) now have 3 gigawatts of contracted demand from data centers with the inclusion of the recently executed electric service agreement (ESA) for 900 megawatts for the QTS Madison site. With the signed agreement, Alliant Energy expects its peak energy demand to grow an industry leading 50 percent by 2030. The energy resources to serve this expected load, while maintaining safe and reliable service to all customers, have increased the Company’s forecasted capital expenditures for 2026 - 2029 to $13.4 billion.

The Company announced 2026 earnings guidance at $3.36 to $3.46 per share, continuing its strong 10-year track record of compound annual earnings growth of 6%. Also, Alliant Energy has increased its 2026 expected annual common stock dividend target to $2.14 per share.