---
title: "WEC Energy Group: Business Model"
description: "WEC Energy Group 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/wec-energy-group/business-model/
source: "Swoopr Investment: https://www.getswoopr.com"
---

# WEC Energy Group: Business Model & Revenue Engine

## Direct Answer

WEC Energy Group reports revenue across 4 business segments in its fiscal 2025 Form 10-K. Wisconsin is the largest, with $7.3 billion of revenue (74% of the total), followed by Illinois at $1.7 billion (17%).

## How Does WEC Energy Group Make Money?

Wisconsin supplies 74% of revenue, so WEC Energy Group's results move mostly with that one business; the others matter more for diversification than for the headline number. Between fiscal 2024 and 2025, Other States grew fastest (+17.3%) and Illinois slowest (+5.1%), so the revenue mix tilts toward Other States while that gap lasts.

| Segment | FY2025 revenue | FY2024 revenue | Share of revenue | Change |
| --- | --- | --- | --- | --- |
| Wisconsin | $7.3 billion | $6.3 billion | 74.4% | 15.2% |
| Illinois | $1.7 billion | $1.6 billion | 17.2% | 5.1% |
| Non Utility Energy Infrastructure | $770 million | $691 million | 7.9% | 11.4% |
| Other States | $528 million | $450 million | 5.4% | 17.3% |

![Bar chart of WEC Energy Group revenue by segment for fiscal 2025: Wisconsin 74.4%, Illinois 17.2%, Non Utility Energy Infrastructure 7.9%, Other States 5.4%.](https://www.getswoopr.com/images/charts/wec-energy-group-business-model-segment-mix.webp)
*WEC Energy Group 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 105% of WEC Energy Group'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 WEC Energy Group reported in the segment note and revenue disclosures of its Form 10-K filed February 20, 2026 (accession 0000783325-26-000018), 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 WEC Energy Group's business segments?

In its fiscal 2025 Form 10-K, WEC Energy Group reports revenue for Wisconsin, Illinois, Non Utility Energy Infrastructure and Other States.

### Which part of WEC Energy Group brings in the most revenue?

Wisconsin, with $7.3 billion of revenue in fiscal 2025, or 74% of the total.

### Where does WEC Energy Group 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: WEC ENERGY GROUP, INC. Form 10-K filed February 20, 2026](https://www.sec.gov/Archives/edgar/data/783325/000078332526000018/wec-20251231.htm)
- [SEC EDGAR: WEC ENERGY GROUP, INC. annual and quarterly filings](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=783325&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

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

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