---
title: "Alliant Energy: Business Model"
description: "Alliant Energy revenue by business segment from its fiscal 2025 Form 10-K, with each part's share, growth and profitability explained."
canonical: https://www.getswoopr.com/stocks/companies/alliant-energy/business-model/
source: "Swoopr Investment: https://www.getswoopr.com"
---

# Alliant Energy: Business Model & Revenue Engine



## Direct Answer

Alliant Energy reports revenue across 3 business segments in its fiscal 2025 Form 10-K. Ipl is the largest, with $2.2 billion of revenue (51% of the total), followed by Wpl at $2.1 billion (47%).

## How Does Alliant Energy Make Money?

No single line supplies a majority of revenue: the largest, Ipl, is 51%, which spreads Alliant Energy's exposure across several demand drivers. Between fiscal 2024 and 2025, Wpl grew fastest (+11.9%) and All Other slowest (-1.1%), so the revenue mix tilts toward Wpl while that gap lasts.

| Segment | FY2025 revenue | FY2024 revenue | Share of revenue | Change |
| --- | --- | --- | --- | --- |
| Ipl | $2.2 billion | $2.0 billion | 50.6% | 7.9% |
| Wpl | $2.1 billion | $1.8 billion | 47.3% | 11.9% |
| All Other | $89 million | $90 million | 2.0% | -1.1% |

![Bar chart of Alliant Energy revenue by segment for fiscal 2025: Ipl 50.6%, Wpl 47.3%, All Other 2.0%.](https://www.getswoopr.com/images/charts/alliant-energy-business-model-segment-mix.webp)
*Alliant Energy revenue by segment as a share of total revenue, from the table above. The largest is highlighted. Select the chart to open it full size.*

## What the Segment Figures Do Not Show

The rows above add up to 100% of Alliant Energy's reported revenue for fiscal 2025; the difference is intersegment eliminations, corporate revenue or items the company reports outside its segments. Segment definitions are management's choice and change when a company reorganizes, in which case it restates prior years in the next filing, so a multi-year comparison should use the figures from a single filing. Revenue shows where sales come from, not where profit or cash is earned: a small segment can carry most of the margin.

## Where These Numbers Come From

Every figure on this page is a value Alliant Energy reported in the segment note and revenue disclosures of its Form 10-K filed February 20, 2026 (accession 0000352541-26-000007), read from the SEC's Financial Statement Data Sets. The prior-year column is the comparative figure from that same filing, so it reflects any restatement for a change in segments. Category names are the company's own XBRL labels, lightly reformatted for reading.

Rows that only total other rows (for example a "Products" line beside the individual products) are left out so nothing is counted twice. This page is educational and describes reported history for fiscal 2025; it is not a forecast or a recommendation.

## Frequently Asked Questions

### What are Alliant Energy's business segments?

In its fiscal 2025 Form 10-K, Alliant Energy reports revenue for Ipl, Wpl and All Other.

### Which part of Alliant Energy brings in the most revenue?

Ipl, with $2.2 billion of revenue in fiscal 2025, or 51% of the total.

### Where does Alliant Energy report its segment results?

In the segment note to the financial statements in its Form 10-K, most recently filed February 20, 2026, alongside management's discussion of each segment's results.

## References

- [SEC EDGAR: ALLIANT ENERGY CORP Form 10-K filed February 20, 2026](https://www.sec.gov/Archives/edgar/data/352541/000035254126000007/lnt-20251231.htm)
- [SEC EDGAR: ALLIANT ENERGY CORP annual and quarterly filings](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=352541&type=10-K)
- [SEC: EDGAR application programming interfaces (XBRL frames and submissions data)](https://www.sec.gov/search-filings/edgar-application-programming-interfaces)
- [SEC: Financial Statement Data Sets](https://www.sec.gov/data-research/sec-markets-data/financial-statement-data-sets)

## Related Pages

- [Alliant Energy company dossier](https://www.getswoopr.com/stocks/companies/alliant-energy/)
- [Alliant Energy financial metrics](https://www.getswoopr.com/stocks/companies/alliant-energy/metrics/)
- [Alliant Energy financial risk indicators](https://www.getswoopr.com/stocks/companies/alliant-energy/risks/)
- [Alliant Energy peer comparison](https://www.getswoopr.com/stocks/companies/alliant-energy/competitors/)
- [Alliant Energy business model and revenue mix](https://www.getswoopr.com/stocks/companies/alliant-energy/business-model/)
- [Fundamental analysis guides](https://www.getswoopr.com/learn/fundamental-analysis/)





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