Quick Answer
ALLIANT ENERGY CORP reported Operating Income of $1.02 billion for fiscal year 2025.
ALLIANT ENERGY CORP Operating Income — Annual History
| Fiscal Year | Operating Income | YoY Change |
|---|---|---|
| 2025 | $1.02B | +15.7% |
| 2024 | $886.00M | -6.0% |
| 2023 | $943.00M | +1.6% |
| 2022 | $928.00M | +16.7% |
| 2021 | $795.00M | +7.4% |
| 2020 | $740.00M | -4.9% |
| 2019 | $778.00M | +12.1% |
| 2018 | $694.00M | +3.4% |
| 2017 | $671.20M | +21.1% |
| 2016 | $554.10M | -4.0% |
| 2015 | $577.00M | +6.1% |
| 2014 | $543.60M | +1.8% |
| 2013 | $533.90M | +2.7% |
| 2012 | $519.70M | +1.2% |
| 2011 | $513.30M | -8.3% |
| 2010 | $560.00M | +41.3% |
| 2009 | $396.20M | -18.6% |
| 2008 | $487.00M | — |
Quarterly Operating Income
| Quarter Ending | Operating Income | YoY | QoQ |
|---|---|---|---|
| September 30, 2025 | $349.00M | +11.5% | +56.5% |
| June 30, 2025 | $223.00M | +71.5% | -13.2% |
| March 31, 2025 | $257.00M | +15.8% | -17.9% |
| September 30, 2024 | $313.00M | -2.8% | +140.8% |
| June 30, 2024 | $130.00M | -40.1% | -41.4% |
| March 31, 2024 | $222.00M | +0.0% | -31.1% |
| September 30, 2023 | $322.00M | +4.2% | +48.4% |
| June 30, 2023 | $217.00M | +2.4% | -2.3% |
- ALLIANT ENERGY CORP showed an increase of +15.7% in Operating Income compared to the prior fiscal year.
- Over the 2008–2025 period, ALLIANT ENERGY CORP’s operating income has grown by 110.5% (from $487.00 million to $1.02 billion).
- The most recent figure is from ALLIANT ENERGY CORP’s fiscal year 2025 report (Form 10-K), filed with the SEC on February 20, 2026.
- All figures are sourced from SEC EDGAR XBRL filings, last verified June 17, 2026.
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