AEE vs WEC: Ameren and WEC Energy compared
The short version
From the latest prices and each company's SEC filings. Who's ahead on each measure, not which to buy.
- WEC Energy is the larger company, worth $33.9B, about 1.2 times Ameren.
- WEC Energy grew revenue faster over the last year (+2.6% vs -5.8%).
- Ameren keeps more of each dollar of revenue as operating profit (24.9% vs 22.8%).
- On earnings, Ameren is the cheaper stock (17.9x vs 20.8x).
Side by side
The stronger figure is shaded where higher (or, for valuation multiples, lower) reads as better. How the implied growth works.
| Measure | AEE | WEC |
|---|---|---|
| Market cap | $27.6B | $33.9B |
| Share price | $102.19 | $103.74 |
| Revenue (last fiscal year) | $8.8B | $9.8B |
| Free cash flow (last fiscal year) | -$775M | — |
| Revenue growth, last year | -5.8% | +2.6% |
| Revenue growth per year, last 5 fiscal years | +8.3% | +4.2% |
| Operating margin | 24.9% | 22.8% |
| Net margin | 17.9% | 16.7% |
| Return on equity | 11.4% | 11.6% |
| P/E (trailing) | 17.9x | 20.8x |
| Price / free cash flow | — | — |
| EV / EBITDA | 11.8x | 13.8x |
| FCF growth the price implies | — | — |
| Dividend yield | 2.8% | 3.5% |
| Debt / equity | 2.73x | 2.62x |
| Fundamental grade | D | C |
| Superinvestors holding it | 2 | 4 |
| Insider purchases, last 12 months | 2 | 0 |
Results from SEC filings
Revenue and free cash flow by fiscal year, from each company's 10-K filings.
Ameren
| Year | Revenue | Free cash flow | Op. margin |
|---|---|---|---|
| 2021 | $6.4B | -$1.8B | 20.8% |
| 2022 | $8.0B | -$1.1B | 19.0% |
| 2023 | $7.5B | -$1.0B | 20.8% |
| 2024 | $7.6B | -$1.6B | 19.9% |
| 2025 | $8.8B | -$775M | 23.0% |
WEC Energy
| Year | Revenue | Free cash flow | Op. margin |
|---|---|---|---|
| 2021 | $8.3B | -$340M | 20.6% |
| 2022 | $9.6B | -$636M | 20.0% |
| 2023 | $8.9B | — | 21.5% |
| 2024 | $8.6B | — | 25.0% |
| 2025 | $9.8B | — | 22.9% |
Where the revenue comes from
Ameren · by segments, 2025
Ameren Missouri$4.8B54%
Ameren Illinois Electric Distribution$2.4B27%
Ameren Illinois Gas$968M11%
Ameren Transmission$675M8%
WEC Energy · by segments, 2025
Wisconsin$7.3B71%
Illinois$1.7B16%
Non-Utility Energy Infrastructure$770M7%
Other States$528M5%
Compare them in fullFifteen years of statements, quarterly results, DCF and IRR models, and any number of peers side by side.
Open AEE in InvestinglyQuestions
Which is bigger, Ameren or WEC Energy?
WEC Energy (WEC), at $33.9B against $27.6B.
Is AEE or WEC cheaper?
By trailing P/E, Ameren (17.9x) is cheaper than WEC Energy (20.8x). A lower multiple can also mean the market expects less growth.
Which grows faster, AEE or WEC?
WEC Energy: revenue grew +2.6% over the last year, against -5.8%.
More comparisons
Prices and ratios as of the last daily update; statements from SEC filings. Information only, not investment advice.