First Solar (WBO:FSLR) E10: €3.50 (As of Jun. 2026)

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WBO:FSLR First Solar Inc WBO:FSLR
90 GF Score
Price €184.20
GF Value €158.87
Valuation Modestly Overvalued
! 5 Warning Signs
View Full Analysis

What is First Solar E10?

First Solar WBO:FSLR +4.54% 90 E10 is €3.50 as of Jun. 2026. GuruFocus rates WBO:FSLR with a GF Score™ of 90/100 and a GF Value™ of €158.87 (Modestly Overvalued). 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.

First Solar's adjusted earnings per share data for the three months ended in Jun. 2026 was €0.340. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is €3.50 for the trailing ten years ended in Jun. 2026.

During the past 12 months, First Solar's average E10 Growth Rate was -100.00% per year. During the past 3 years, the average E10 Growth Rate was 26.20% per year. During the past 5 years, the average E10 Growth Rate was 26.70% per year. During the past 10 years, the average E10 Growth Rate was -1.00% 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 First Solar was 28.10% per year. The lowest was -28.00% per year. And the median was 2.45% per year.

As of today (2026-08-02), First Solar's current stock price is €184.20. First Solar's E10 for the quarter that ended in Jun. 2026 was €3.50. First Solar's Shiller PE Ratio of today is 52.63.

During the past 13 years, the highest Shiller PE Ratio of First Solar was 129.99. The lowest was 7.53. And the median was 50.21.


First Solar  (WBO:FSLR) 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.

First Solar's Shiller P/E Ratio of today is calculated as

Shiller PE Ratio=Share Price/E10
=184.20/3.50
=52.63

* 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 First Solar was 129.99. The lowest was 7.53. And the median was 50.21.


Be Aware

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


First Solar E10 Related Terms


First Solar E10 Historical Data

* Premium members only.

The historical data trend for First Solar'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.

First Solar E10 Chart

First Solar 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 1.46 1.73 2.03 2.94 3.29

First Solar Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
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 2.99 2.96 3.29 3.30 3.50

WBO:FSLR vs NXT, ENPH, SEDG: E10 Comparison

For the Solar subindustry, First Solar'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.


First Solar Shiller PE Ratio vs Semiconductors Industry

For the Semiconductors industry and Technology sector, First Solar's Shiller PE Ratio distribution charts can be found below:

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


WBO:FSLR
90GF Score
First Solar Inc WBO:FSLR
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

First Solar 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, First Solar's adjusted earnings per share data for the three months ended in Jun. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Jun. 2026 (Change)*Current CPI (Jun. 2026)
=0.34/333.9520*333.9520
=0.340

Current CPI (Jun. 2026) = 333.9520.

First Solar Quarterly Data

per share eps CPI Adj_EPS
201609 1.292 241.428 1.787
201612 -6.560 241.432 -9.074
201703 0.084 243.801 0.115
201706 0.445 244.955 0.607
201709 1.636 246.819 2.214
201712 -3.498 246.524 -4.739
201803 0.633 249.554 0.847
201806 -0.394 251.989 -0.522
201809 0.463 252.439 0.613
201812 0.431 251.233 0.573
201903 -0.566 254.202 -0.744
201906 -0.159 256.143 -0.207
201909 0.263 256.759 0.342
201912 -0.504 256.974 -0.655
202003 0.769 258.115 0.995
202006 0.311 257.797 0.403
202009 1.231 260.280 1.579
202012 0.888 260.474 1.138
202103 1.646 264.877 2.075
202106 0.639 271.696 0.785
202109 0.357 274.310 0.435
202112 1.089 278.802 1.304
202203 -0.372 287.504 -0.432
202206 0.492 296.311 0.554
202209 -0.465 296.808 -0.523
202212 -0.066 296.797 -0.074
202303 0.374 301.836 0.414
202306 1.468 305.109 1.607
202309 2.343 307.789 2.542
202312 2.980 306.746 3.244
202403 2.024 312.332 2.164
202406 3.019 314.175 3.209
202409 2.622 315.301 2.777
202412 3.486 315.605 3.689
202503 1.804 319.799 1.884
202506 2.757 322.561 2.854
202509 3.612 324.800 3.714
202512 4.133 324.054 4.259
202603 2.785 330.213 2.817
202606 0.340 333.952 0.340

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 €3.50 mean?
First Solar (WBO:FSLR) has a E10 of €3.50 as of Jun. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on First Solar and its competitors.
Is First Solar's E10 too high?
First Solar's current E10 is €3.50. Overall, First Solar has a GF Score™ of 90/100 and is considered Modestly Overvalued, reflecting its overall financial health beyond just this single metric.
How does First Solar's E10 compare to NXT and ENPH?
First Solar's E10 of €3.50 can be compared against companies in the Semiconductors 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 a Semiconductors company?
A good E10 depends on the Semiconductors 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 First Solar and its competitors. First Solar's current E10 is €3.50. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is First Solar stock overvalued right now?
Based on GuruFocus' analysis, First Solar (WBO:FSLR) is currently considered Modestly Overvalued. The stock's GF Value™ is €158.87, compared to a current price of €184.20 — trading 15.9% above its estimated fair value. The current E10 is €3.50. First Solar's overall GF Score™ is 90/100 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 First Solar (WBO:FSLR), the current E10 is €3.50 as of Jun. 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 First Solar (WBO:FSLR) Overvalued in 2026?

Based on GuruFocus' analysis, First Solar stock appears to be overvalued. The current stock price of €184.20 is trading 15.9% above its estimated GF Value™ of €158.87. GuruFocus considers First Solar to be Modestly Overvalued.

Key valuation signals for WBO:FSLR:

  • E10: €3.50
  • GF Value™: €158.87 vs. price of €184.20 (15.9% above fair value)
  • GF Score™: 90/100 with 5 warning signs

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


First Solar Business Description

Address 4300 East Camelback Road, Suite 220, Phoenix, AZ, USA, 85018
First Solar designs and manufactures solar photovoltaic panels, modules, and systems for use in utility-scale development projects. The company's solar modules use cadmium telluride to convert sunlight into electricity. This is commonly called thin-film technology. First Solar is the world's largest thin-film solar module manufacturer. It has production lines in Vietnam, Malaysia, the United States, and India.
90GF Score

Get the complete analysis for WBO:FSLR

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

€184.20
Price
€158.87
GF Value