First Solar (XSWX:FSLR) E10: CHF3.03 (As of Mar. 2026)


XSWX:FSLR First Solar Inc XSWX:FSLR
91 GF Score
Price CHF207.07
GF Value CHF221.79
! 4 Warning Signs
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What is First Solar E10?

First Solar XSWX:FSLR -0.24% 91 E10 is CHF3.03 as of Mar. 2026. GuruFocus rates XSWX:FSLR with a GF Score™ of 91/100 and a GF Value™ of CHF221.79. The stock has 4 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 Mar. 2026 was CHF2.535. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is CHF3.03 for the trailing ten years ended in Mar. 2026.

During the past 12 months, First Solar's average E10 Growth Rate was 17.90% 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 (2026-06-25), First Solar's current stock price is CHF207.07. First Solar's E10 for the quarter that ended in Mar. 2026 was CHF3.03. First Solar's Shiller PE Ratio of today is 68.34.

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 49.77.


First Solar  (XSWX: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
=207.07/3.03
=68.34

* 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 49.77.


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 0.00 0.00 0.00 0.00 0.00

First Solar 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 0.00 0.00 0.00 0.00 3.03

XSWX: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.


XSWX:FSLR
91GF Score
First Solar Inc XSWX:FSLR
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
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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 Mar. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=2.535/330.2130*330.2130
=2.535

Current CPI (Mar. 2026) = 330.2130.

First Solar Quarterly Data

per share eps CPI Adj_EPS
201606 -0.107 241.018 -0.147
201609 1.411 241.428 1.930
201612 -7.054 241.432 -9.648
201703 0.090 243.801 0.122
201706 0.484 244.955 0.652
201709 1.877 246.819 2.511
201712 -4.086 246.524 -5.473
201803 0.739 249.554 0.978
201806 -0.455 251.989 -0.596
201809 0.523 252.439 0.684
201812 0.486 251.233 0.639
201903 -0.640 254.202 -0.831
201906 -0.178 256.143 -0.229
201909 0.287 256.759 0.369
201912 -0.550 256.974 -0.707
202003 0.815 258.115 1.043
202006 0.333 257.797 0.427
202009 1.327 260.280 1.684
202012 0.959 260.474 1.216
202103 1.822 264.877 2.271
202106 0.699 271.696 0.850
202109 0.388 274.310 0.467
202112 1.133 278.802 1.342
202203 -0.381 287.504 -0.438
202206 0.505 296.311 0.563
202209 -0.448 296.808 -0.498
202212 -0.065 296.797 -0.072
202303 0.370 301.836 0.405
202306 1.432 305.109 1.550
202309 2.249 307.789 2.413
202312 2.811 306.746 3.026
202403 1.955 312.332 2.067
202406 2.905 314.175 3.053
202409 2.465 315.301 2.582
202412 3.254 315.605 3.405
202503 1.723 319.799 1.779
202506 2.586 322.561 2.647
202509 3.375 324.800 3.431
202512 3.857 324.054 3.930
202603 2.535 330.213 2.535

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 CHF3.03 mean?
First Solar (XSWX:FSLR) has a E10 of CHF3.03 as of Mar. 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 CHF3.03. Overall, First Solar has a GF Score™ of 91/100, 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 CHF3.03 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 CHF3.03. 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?
First Solar (XSWX:FSLR) has a current E10 of CHF3.03. The stock's GF Value™ is CHF221.79, compared to a current price of CHF207.07 — trading 6.6% below its estimated fair value. The current E10 is CHF3.03. First Solar's overall GF Score™ is 91/100 with 4 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 (XSWX:FSLR), the current E10 is CHF3.03 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 First Solar (XSWX:FSLR) Overvalued in 2026?

Based on GuruFocus' analysis, First Solar stock appears to be undervalued. The current stock price of CHF207.07 is trading 6.6% below its estimated GF Value™ of CHF221.79.

Key valuation signals for XSWX:FSLR:

  • E10: CHF3.03
  • GF Value™: CHF221.79 vs. price of CHF207.07 (6.6% below fair value)
  • GF Score™: 91/100 with 4 warning signs

No single metric tells the full story. See the XSWX: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.
91GF Score

Get the complete analysis for XSWX:FSLR

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

CHF207.07
Price
CHF221.79
GF Value