ALLETE (FRA:AEBA) Shiller PE Ratio: (As of Sep. 22, 2026)

Author: Vera Yuan Vera Yuan
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Director of Data and Quant Analytics at GuruFocus
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Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

FRA:AEBA ALLETE Inc FRA:AEBA
26 GF Score
Price €57.50
GF Value €51.55
! 12 Warning Signs
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What is ALLETE Shiller PE Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


ALLETE  (FRA:AEBA) Shiller PE Ratio Explanation

Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.

Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.


Be Aware

Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.


ALLETE Shiller PE Ratio Related Terms


ALLETE Shiller PE Ratio Historical Data

* Premium members only.

The historical data trend for ALLETE's Shiller PE Ratio can be seen below:

* For Operating Data section: All numbers are indicated by the unit behind each term and all currency related amount are in USD.
* For other sections: All numbers are in millions except for per share data, ratio, and percentage. All currency related amount are indicated in the company's associated stock exchange currency.

ALLETE Shiller PE Ratio Chart

ALLETE Annual Data
Trend Dec15 Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24
Shiller PE Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 18.02 19.52 18.92 15.85 17.12

ALLETE Quarterly Data
Dec20 Mar21 Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25
Shiller PE Ratio Get a 7-Day Free Trial Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only Premium Member Only 15.81 17.03 16.72 14.83 15.90

FRA:AEBA vs SRE, AES: Shiller PE Ratio Comparison

For the Utilities - Diversified subindustry, ALLETE's Shiller PE Ratio, along with its competitors' market caps and Shiller PE Ratio data, can be viewed below:

* Competitive companies are chosen from companies within the same industry, with headquarter located in same country, with closest market capitalization; x-axis shows the market cap, and y-axis shows the term value; the bigger the dot, the larger the market cap. Note that "N/A" values will not show up in the chart.


ALLETE Shiller PE Ratio vs Utilities - Regulated Industry

For the Utilities - Regulated industry and Utilities sector, ALLETE's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where ALLETE's Shiller PE Ratio falls into.


FRA:AEBA
26GF Score
ALLETE Inc FRA:AEBA
Shiller PE Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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ALLETE Shiller PE Ratio Calculation

For Shiller PE Ratio, the earnings of the past 10 years are inflation-adjusted and averaged. The result is used for P/E calculation. Since it looks at the average over the last 10 years, the Shiller PE Ratio is also called PE10.

The Shiller PE Ratio was first used by professor Robert Shiller to measure the valuation of the overall market. The same calculation is applied here to individual companies.

ALLETE's E10 for the quarter that ended in Sep. 2025 is calculated as:

For example, ALLETE's adjusted earnings per share data for the three months ended in Sep. 2025 was:

Adj_EPS=Earnings per Share (Diluted)/CPI of Sep. 2025 (Change)*Current CPI (Sep. 2025)
=0.3985/324.8000*324.8000
=0.399

Current CPI (Sep. 2025) = 324.8000.

ALLETE Quarterly Data

Earnings per Share (Diluted) CPI Adj_EPS
201512 0.338 236.525 0.464
201603 0.844 238.132 1.150
201606 0.443 241.018 0.597
201609 0.726 241.428 0.976
201612 0.825 241.432 1.110
201703 0.910 243.801 1.212
201706 0.654 244.955 0.868
201709 0.747 246.819 0.983
201712 0.688 246.524 0.906
201803 0.806 249.554 1.048
201806 0.512 251.989 0.660
201809 0.512 252.439 0.658
201812 1.036 251.233 1.339
201903 1.201 254.202 1.535
201906 0.589 256.143 0.746
201909 0.542 256.759 0.685
201912 0.867 256.974 1.095
202003 1.162 258.115 1.462
202006 0.352 257.797 0.443
202009 0.670 260.280 0.836
202012 0.758 260.474 0.946
202103 0.824 264.877 1.010
202106 0.443 271.696 0.529
202109 0.446 274.310 0.528
202112 1.026 278.802 1.195
202203 1.109 287.504 1.253
202206 0.629 296.311 0.689
202209 0.585 296.808 0.640
202212 0.887 296.797 0.970
202303 0.947 301.836 1.019
202306 0.824 305.109 0.878
202309 1.373 307.789 1.449
202312 0.832 306.746 0.881
202403 0.810 312.332 0.842
202406 0.530 314.175 0.548
202409 0.708 315.301 0.729
202412 0.818 315.605 0.842
202503 0.919 319.799 0.933
202506 0.484 322.561 0.488
202509 0.399 324.800 0.399

Add all the adjusted EPS together and divide 10 will get our E10.

Please note that we use the CPI data of the country/region where the company is headquartered. If the CPI data for that country/region is not available, then we will use the CPI data of the United States as default.

Is ALLETE (FRA:AEBA) Overvalued in 2026?

Based on GuruFocus' analysis, ALLETE stock appears to be overvalued. The current stock price of €57.50 is trading 11.5% above its estimated GF Value™ of €51.55.

Key valuation signals for FRA:AEBA:

  • Shiller PE Ratio:
  • GF Value™: €51.55 vs. price of €57.50 (11.5% above fair value)
  • GF Score™: 26/100 with 12 warning signs

No single metric tells the full story. See the FRA:AEBA stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


ALLETE Business Description

Address 30 West Superior Street, Duluth, MN, USA, 55802-2093
ALLETE Inc provides competitively-priced energy in America's Upper Midwest region and invests in transmission infrastructure and other energy-centric businesses. The company has two reportable segments. The first segment is Regulated Operations, which includes the company's regulated utilities, Minnesota Power and SWL&P, as well as its investment in ATC. ATC is a regulated utility based in Wisconsin that owns and maintains electric transmission assets in parts of Wisconsin, Michigan, Minnesota, and Illinois. The second segment is ALLETE Clean Energy, which focuses on developing, acquiring, and operating clean and renewable energy projects.
26GF Score

Get the complete analysis for FRA:AEBA

Shiller PE Ratio is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€57.50
Price
€51.55
GF Value