MGE Energy (FRA:MG1) Cyclically Adjusted Book per Share: €27.50 (As of Mar. 2026)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
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:MG1 MGE Energy Inc FRA:MG1
73 GF Score
Price €71.50
GF Value €76.09
! 4 Warning Signs
View Full Analysis

What is MGE Energy Cyclically Adjusted Book per Share?

MGE Energy FRA:MG1 73 Cyclically Adjusted Book per Share is €27.50 as of Mar. 2026. GuruFocus rates FRA:MG1 with a GF Score™ of 73/100 and a GF Value™ of €76.09. The stock has 4 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

MGE Energy's adjusted book value per share for the three months ended in Mar. 2026 was €31.759. Add all the adjusted book value per share for the past 10 years together and divide the count will get our Cyclically Adjusted Book per Share, which is €27.50 for the trailing ten years ended in Mar. 2026.

During the past 12 months, MGE Energy's average Cyclically Adjusted Book Growth Rate was 6.10% per year. During the past 3 years, the average Cyclically Adjusted Book Growth Rate was 5.90% per year. During the past 5 years, the average Cyclically Adjusted Book Growth Rate was 7.60% per year. During the past 10 years, the average Cyclically Adjusted Book Growth Rate was 6.80% per year. Please click Growth Rate Calculation Example (GuruFocus) to see how GuruFocus calculates Wal-Mart Stores Inc (WMT)'s revenue growth rate. You can apply the same method to get the Cyclically Adjusted Book Growth Rate using Cyclically Adjusted Book per Share data.

During the past 13 years, the highest 3-Year average Cyclically Adjusted Book Growth Rate of MGE Energy was 9.20% per year. The lowest was 1.20% per year. And the median was 5.00% per year.

As of today (2026-07-26), MGE Energy's current stock price is €71.50. MGE Energy's Cyclically Adjusted Book per Share for the quarter that ended in Mar. 2026 was €27.50. MGE Energy's Cyclically Adjusted PB Ratio of today is 2.60.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of MGE Energy was 4.02. The lowest was 2.25. And the median was 3.13.


MGE Energy  (FRA:MG1) Cyclically Adjusted Book per Share Explanation

If a company grows much fast than inflation, Cyclically Adjusted Book per Share may underestimate the company's equity. Cyclically Adjusted PB Ratio can seem to be too high even the actual PB Ratio is low.

For the Cyclically Adjusted PB Ratio, the book value of the past 10 years are inflation-adjusted and averaged. The result is used for P/B calculation. Since it looks at the average over the last 10 years, the Cyclically Adjusted PB Ratio is also called CAPB Ratio.

The Shiller PE Ratio was first used by professor Robert Shiller. He uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings per share of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted book value per share of a company over the past 10 years.

MGE Energy's Cyclically Adjusted PB Ratio of today is calculated as

Cyclically Adjusted PB Ratio=Share Price/Cyclically Adjusted Book per Share
=71.50/27.50
=2.60

* 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.

During the past 13 years, the highest Cyclically Adjusted PB Ratio of MGE Energy was 4.02. The lowest was 2.25. And the median was 3.13.


Be Aware

Cyclically Adjusted PB Ratio works better for cyclical companies. It gives you a better idea on the company's real book value.


MGE Energy Cyclically Adjusted Book per Share Related Terms


MGE Energy Cyclically Adjusted Book per Share Historical Data

* Premium members only.

The historical data trend for MGE Energy's Cyclically Adjusted Book per Share 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.

MGE Energy Cyclically Adjusted Book per Share Chart

MGE Energy Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Cyclically Adjusted Book per Share
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 25.29 28.89 26.61

MGE Energy Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
Cyclically Adjusted Book per Share 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 28.01 25.96 26.53 26.61 27.50

FRA:MG1 vs HE, NWE, IMSR: Cyclically Adjusted Book per Share Comparison

For the Utilities - Regulated Electric subindustry, MGE Energy's Cyclically Adjusted PB Ratio, along with its competitors' market caps and Cyclically Adjusted PB 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.


MGE Energy Cyclically Adjusted PB Ratio vs Utilities - Regulated Industry

For the Utilities - Regulated industry and Utilities sector, MGE Energy's Cyclically Adjusted PB Ratio distribution charts can be found below:

* The bar in red indicates where MGE Energy's Cyclically Adjusted PB Ratio falls into.


FRA:MG1
73GF Score
MGE Energy Inc FRA:MG1
Cyclically Adjusted Book per Share is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

MGE Energy Cyclically Adjusted Book per Share Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years. The similar calculation is applied by GuruFocus to calculate the Cyclically Adjusted Book per Share and the Cyclically Adjusted PB Ratio. The Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years.

What is Cyclically Adjusted Book per Share? How do we calculate Cyclically Adjusted Book per Share?

Cyclically Adjusted Book per Share is the average of the inflation adjusted Book Value per Share of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the Cyclically Adjusted Book per Share of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the book value per share from 2001 through 2010.

We adjusted the 2001 book value per share data with the total inflation from 2001 through 2010 to the equivalent book value in 2010. If the total inflation from 2001 to 2010 is 40%, and Wal-Mart's book value is $1 a share in 2001, then the 2001's equivalent book value in 2010 is $1.4 a share. If Wal-Mart's book value is $1 again in 2002, and the total inflation from 2002 through 2010 is 35%, then the equivalent 2002 book value in 2010 is $1.35. So on and so forth, you get the equivalent book value per share of past 10 years. Then you add them together and divided the sum by the count to get Cyclically Adjusted Book per Share.

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.

For example, MGE Energy's adjusted Book Value per Share data for the three months ended in Mar. 2026 was:

Adj_Book= Book Value per Share /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=31.759/330.2130*330.2130
=31.759

Current CPI (Mar. 2026) = 330.2130.

MGE Energy Quarterly Data

Book Value per Share CPI Adj_Book
201606 18.048 241.018 24.727
201609 18.511 241.428 25.318
201612 19.800 241.432 27.081
201703 19.764 243.801 26.769
201706 18.939 244.955 25.531
201709 18.229 246.819 24.388
201712 18.968 246.524 25.407
201803 18.411 249.554 24.362
201806 19.609 251.989 25.696
201809 20.072 252.439 26.256
201812 20.706 251.233 27.215
201903 14.422 254.202 18.734
201906 17.700 256.143 22.818
201909 22.295 256.759 28.673
201912 22.214 256.974 28.545
202003 22.698 258.115 29.038
202006 23.455 257.797 30.044
202009 22.857 260.280 28.998
202012 22.185 260.474 28.125
202103 23.175 264.877 28.891
202106 23.119 271.696 28.098
202109 24.170 274.310 29.096
202112 25.145 278.802 29.782
202203 26.318 287.504 30.228
202206 27.626 296.311 30.787
202209 30.029 296.808 33.409
202212 28.236 296.797 31.415
202303 28.368 301.836 31.035
202306 28.397 305.109 30.733
202309 29.415 307.789 31.558
202312 28.909 306.746 31.121
202403 29.469 312.332 31.156
202406 29.985 314.175 31.516
202409 29.745 315.301 31.152
202412 32.195 315.605 33.685
202503 31.872 319.799 32.910
202506 30.132 322.561 30.847
202509 30.256 324.800 30.760
202512 30.473 324.054 31.052
202603 31.759 330.213 31.759

Add all the adjusted book value per share together and divide the count will get our Cyclically Adjusted Book per Share.

What does a Cyclically Adjusted Book per Share of €27.50 mean?
MGE Energy (FRA:MG1) has a Cyclically Adjusted Book per Share of €27.50 as of Mar. 2026. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on MGE Energy and its competitors.
Is MGE Energy's Cyclically Adjusted Book per Share too high?
MGE Energy's current Cyclically Adjusted Book per Share is €27.50. Overall, MGE Energy has a GF Score™ of 73/100, reflecting its overall financial health beyond just this single metric.
How does MGE Energy's Cyclically Adjusted Book per Share compare to HE and NWE?
MGE Energy's Cyclically Adjusted Book per Share of €27.50 can be compared against companies in the Utilities - Regulated industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Cyclically Adjusted Book per Share for an Utilities - Regulated company?
A good Cyclically Adjusted Book per Share depends on the Utilities - Regulated industry context. However, Cyclically Adjusted Book per Share should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Cyclically Adjusted Book per Share mean?
A high Cyclically Adjusted Book per Share can signal that a stock is expensive relative to its fundamentals. Cyclically adjusted book value per share represents the company's inflation-adjusted book value per share over a 10-year period. View historical data on MGE Energy and its competitors. MGE Energy's current Cyclically Adjusted Book per Share is €27.50. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is MGE Energy stock overvalued right now?
MGE Energy (FRA:MG1) has a current Cyclically Adjusted Book per Share of €27.50. The stock's GF Value™ is €76.09, compared to a current price of €71.50 — trading 6% below its estimated fair value. The current Cyclically Adjusted Book per Share is €27.50. MGE Energy's overall GF Score™ is 73/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Cyclically Adjusted Book per Share calculated?
Cyclically Adjusted Book per Share is calculated from a company's financial statements. For MGE Energy (FRA:MG1), the current Cyclically Adjusted Book per Share is €27.50 as of Mar. 2026. GuruFocus calculates this using data sourced from SEC filings and annual reports. See the calculation section and 30-year financial data on this page for the full breakdown.

Is MGE Energy (FRA:MG1) Overvalued in 2026?

Based on GuruFocus' analysis, MGE Energy stock appears to be undervalued. The current stock price of €71.50 is trading 6% below its estimated GF Value™ of €76.09.

Key valuation signals for FRA:MG1:

  • Cyclically Adjusted Book per Share: €27.50
  • GF Value™: €76.09 vs. price of €71.50 (6% below fair value)
  • GF Score™: 73/100 with 4 warning signs

No single metric tells the full story. See the FRA:MG1 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


MGE Energy Business Description

Other Exchanges MGEE:USA
Address 133 South Blair Street, Madison, WI, USA, 53788
MGE Energy provides electric service to 170,000 customers and natural gas service to 180,000 customers in Madison, Wisconsin, and surrounding areas. Nearly 90% of customers are residential. The company also owns a 3.6% stake in American Transmission Co. MGE owns interests in two coal power plants that earn guaranteed fixed rates of return, contributing about 20% of earnings.
73GF Score

Get the complete analysis for FRA:MG1

Cyclically Adjusted Book per Share is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€71.50
Price
€76.09
GF Value