ERG SpA (MIL:ERG) E10: €1.42 (As of Mar. 2026)


MIL:ERG ERG SpA MIL:ERG
76 GF Score
Price €23.22
GF Value €24.37
Valuation Fairly Valued
! 5 Warning Signs
View Full Analysis

What is ERG SpA E10?

ERG SpA MIL:ERG +1.40% 76 E10 is €1.42 as of Mar. 2026. GuruFocus rates MIL:ERG with a GF Score™ of 76/100 and a GF Value™ of €24.37 (Fairly Valued). The stock has 5 warning signs investors should review.

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.

ERG SpA's adjusted earnings per share data for the three months ended in Mar. 2026 was €0.420. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is €1.42 for the trailing ten years ended in Mar. 2026.

During the past 12 months, ERG SpA's average E10 Growth Rate was 1.40% per year. During the past 3 years, the average E10 Growth Rate was 4.90% per year. During the past 5 years, the average E10 Growth Rate was 18.40% 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 E10 growth rate using E10 data.

During the past 13 years, the highest 3-Year average E10 Growth Rate of ERG SpA was 28.60% per year. The lowest was 0.00% per year. And the median was 13.20% per year.

As of today (2026-06-24), ERG SpA's current stock price is €23.22. ERG SpA's E10 for the quarter that ended in Mar. 2026 was €1.42. ERG SpA's Shiller PE Ratio of today is 16.35.

During the past 13 years, the highest Shiller PE Ratio of ERG SpA was 44.60. The lowest was 11.92. And the median was 25.09.


ERG SpA  (MIL:ERG) E10 Explanation

If a company grows much fast than inflation, E10 may underestimate the company's earnings power. Shiller PE Ratio can seem to be too high even the actual P/E is low.

For the Shiller P/E, 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 P/E is also called PE10.

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

ERG SpA's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=23.22/1.42
=16.35

* 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 Shiller P/E Ratio of ERG SpA was 44.60. The lowest was 11.92. And the median was 25.09.


Be Aware

Shiller PE Ratio works better for cyclical companies. It gives you a better idea on the company's real earnings power.


ERG SpA E10 Related Terms


ERG SpA E10 Historical Data

* Premium members only.

The historical data trend for ERG SpA's E10 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.

ERG SpA E10 Chart

ERG SpA Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.77 1.23 1.34 1.38 1.42

ERG SpA Quarterly Data
Jun21 Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26
E10 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 1.40 1.39 1.42 1.42 1.42

ERG SpA E10 Competitor Comparison

For the Utilities - Renewable subindustry, ERG SpA'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.


ERG SpA Shiller PE Ratio vs Utilities - Independent Power Producers Industry

For the Utilities - Independent Power Producers industry and Utilities sector, ERG SpA's Shiller PE Ratio distribution charts can be found below:

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


MIL:ERG
76GF Score
ERG SpA MIL:ERG
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

ERG SpA E10 Calculation

E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller P/E calculation. When we calculate the today's Shiller P/E ratio of a stock, we use today's price divided by E10.

What is E10? How do we calculate E10?

E10 is the average of the inflation adjusted earnings of a company over the past 10 years. Let's use an example to explain.

If we want to calculate the E10 of Wal-Mart (WMT) for Dec. 31, 2010, we need to have the inflation data and the earnings from 2001 through 2010.

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

For example, ERG SpA's adjusted earnings per share data for the three months ended in Mar. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=0.42/122.6000*122.6000
=0.420

Current CPI (Mar. 2026) = 122.6000.

ERG SpA Quarterly Data

per share eps CPI Adj_EPS
201606 0.173 99.900 0.212
201609 0.137 100.100 0.168
201612 0.205 100.300 0.251
201703 0.366 101.000 0.444
201706 0.202 101.100 0.245
201709 0.106 101.200 0.128
201712 0.796 101.200 0.964
201803 0.378 101.800 0.455
201806 0.328 102.400 0.393
201809 0.112 102.600 0.134
201812 0.272 102.300 0.326
201903 0.363 102.800 0.433
201906 -0.350 103.100 -0.416
201909 0.048 102.900 0.057
201912 -0.289 102.800 -0.345
202003 0.356 102.900 0.424
202006 0.130 102.900 0.155
202009 0.060 102.300 0.072
202012 0.194 102.600 0.232
202103 0.437 103.700 0.517
202106 0.184 104.200 0.216
202109 0.202 104.900 0.236
202112 0.288 106.600 0.331
202203 0.598 110.400 0.664
202206 2.122 112.500 2.313
202209 0.343 114.200 0.368
202212 1.651 119.000 1.701
202303 0.522 118.800 0.539
202306 0.004 119.700 0.004
202309 0.247 120.300 0.252
202312 0.516 119.700 0.529
202403 0.535 120.200 0.546
202406 0.344 120.700 0.349
202409 0.171 121.200 0.173
202412 0.308 121.200 0.312
202503 0.337 122.500 0.337
202506 0.197 122.700 0.197
202509 0.186 123.100 0.185
202512 -0.310 122.600 -0.310
202603 0.420 122.600 0.420

Add all the adjusted EPS together and divide 10 will get our e10.

Frequently Asked Questions Learn more about E10 →
What does a E10 of €1.42 mean?
ERG SpA (MIL:ERG) has a E10 of €1.42 as of Mar. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on ERG SpA and its competitors.
Is ERG SpA's E10 too high?
ERG SpA's current E10 is €1.42. Overall, ERG SpA has a GF Score™ of 76/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does ERG SpA's E10 compare to competitors?
ERG SpA's E10 of €1.42 can be compared against companies in the Utilities - Independent Power Producers industry. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good E10 for an Utilities - Independent Power Producers company?
A good E10 depends on the Utilities - Independent Power Producers industry context. However, E10 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 E10 mean?
A high E10 can signal that a stock is expensive relative to its fundamentals. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on ERG SpA and its competitors. ERG SpA's current E10 is €1.42. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is ERG SpA stock overvalued right now?
Based on GuruFocus' analysis, ERG SpA (MIL:ERG) is currently considered Fairly Valued. The stock's GF Value™ is €24.37, compared to a current price of €23.22 — trading 4.7% below its estimated fair value. The current E10 is €1.42. ERG SpA's overall GF Score™ is 76/100 with 5 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is E10 calculated?
E10 is calculated from a company's financial statements. For ERG SpA (MIL:ERG), the current E10 is €1.42 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 ERG SpA (MIL:ERG) Overvalued in 2026?

Based on GuruFocus' analysis, ERG SpA stock appears to be undervalued. The current stock price of €23.22 is trading 4.7% below its estimated GF Value™ of €24.37. GuruFocus considers ERG SpA to be Fairly Valued.

Key valuation signals for MIL:ERG:

  • E10: €1.42
  • GF Value™: €24.37 vs. price of €23.22 (4.7% below fair value)
  • GF Score™: 76/100 with 5 warning signs

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


ERG SpA Business Description

Other Exchanges ERGm:UK0MHC:UKER9:Germany
Address Via De Marini, 1, Torre WTC, Genoa, ITA, 16149
ERG SpA produces electricity from clean, renewable, and sustainable sources. Its energy comes from the combination of natural resources such as wind and sun. The company produces wind power, and electricity as a hydroelectric operator to markets across Europe. Electricity is also generated from natural gas operations located in Italy. ERG's wind power production is handled by subsidiary ENG Renew which focuses on developing, building, and operating wind assets. Hydropower and natural gas operations are split off into ERG Power Generation. The company's hydro assets include plants, dams, reservoirs, and a pumping station. Electricity from the plant is either fed into Italy's national grid or used to power other industrial plants.
76GF Score

Get the complete analysis for MIL:ERG

E10 is just one metric. See GF Value™, 30-year financials, guru trades, warning signs, and more.

€23.22
Price
€24.37
GF Value