First Solar (MEX:FSLR) E10: MXN67.25 (As of Mar. 2026)


MEX:FSLR First Solar Inc MEX:FSLR
89 GF Score
Price MXN4,042.55
GF Value MXN4,511.63
Valuation Modestly Undervalued
! 5 Warning Signs
View Full Analysis

What is First Solar E10?

First Solar MEX:FSLR 89 E10 is MXN67.25 as of Mar. 2026. GuruFocus rates MEX:FSLR with a GF Score™ of 89/100 and a GF Value™ of MXN4,511.63 (Modestly Undervalued). 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 Mar. 2026 was MXN58.065. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is MXN67.25 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 (2026-07-13), First Solar's current stock price is MXN4042.55. First Solar's E10 for the quarter that ended in Mar. 2026 was MXN67.25. First Solar's Shiller PE Ratio of today is 60.11.

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 50.09.


First Solar  (MEX: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
=4042.55/67.25
=60.11

* 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 50.09.


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 33.87 35.95 37.83 62.22 68.37

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 66.67 66.32 64.21 68.37 67.25

MEX:FSLR vs NXT, ENPH, RUN: 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.


MEX:FSLR
89GF Score
First Solar Inc MEX: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 Mar. 2026 was:

Adj_EPS= Earnings per Share (Diluted) /CPI of Mar. 2026 (Change)*Current CPI (Mar. 2026)
=58.065/330.2130*330.2130
=58.065

Current CPI (Mar. 2026) = 330.2130.

First Solar Quarterly Data

per share eps CPI Adj_EPS
201606 -2.034 241.018 -2.787
201609 28.036 241.428 38.346
201612 -142.670 241.432 -195.134
201703 1.695 243.801 2.296
201706 9.038 244.955 12.184
201709 35.389 246.819 47.346
201712 -81.308 246.524 -108.910
201803 14.171 249.554 18.751
201806 -9.039 251.989 -11.845
201809 10.101 252.439 13.213
201812 9.621 251.233 12.646
201903 -12.415 254.202 -16.127
201906 -3.458 256.143 -4.458
201909 5.725 256.759 7.363
201912 -10.562 256.974 -13.572
202003 19.931 258.115 25.498
202006 8.079 257.797 10.348
202009 32.032 260.280 40.638
202012 21.483 260.474 27.235
202103 40.064 264.877 49.946
202106 15.328 271.696 18.629
202109 8.636 274.310 10.396
202112 25.232 278.802 29.885
202203 -8.164 287.504 -9.377
202206 10.461 296.311 11.658
202209 -9.253 296.808 -10.294
202212 -1.365 296.797 -1.519
202303 7.210 301.836 7.888
202306 27.259 305.109 29.502
202309 43.547 307.789 46.720
202312 55.166 306.746 59.386
202403 36.512 312.332 38.602
202406 59.540 314.175 62.579
202409 57.299 315.301 60.009
202412 76.123 315.605 79.646
202503 39.893 319.799 41.192
202506 59.877 322.561 61.297
202509 77.779 324.800 79.075
202512 87.148 324.054 88.804
202603 58.065 330.213 58.065

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 MXN67.25 mean?
First Solar (MEX:FSLR) has a E10 of MXN67.25 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 MXN67.25. Overall, First Solar has a GF Score™ of 89/100 and is considered Modestly Undervalued, 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 MXN67.25 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 MXN67.25. 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 (MEX:FSLR) is currently considered Modestly Undervalued. The stock's GF Value™ is MXN4,511.63, compared to a current price of MXN4,042.55 — trading 10.4% below its estimated fair value. The current E10 is MXN67.25. First Solar's overall GF Score™ is 89/100 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 (MEX:FSLR), the current E10 is MXN67.25 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 (MEX:FSLR) Overvalued in 2026?

Based on GuruFocus' analysis, First Solar stock appears to be undervalued. The current stock price of MXN4,042.55 is trading 10.4% below its estimated GF Value™ of MXN4,511.63. GuruFocus considers First Solar to be Modestly Undervalued.

Key valuation signals for MEX:FSLR:

  • E10: MXN67.25
  • GF Value™: MXN4,511.63 vs. price of MXN4,042.55 (10.4% below fair value)
  • GF Score™: 89/100 with 5 warning signs

No single metric tells the full story. See the MEX: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.
89GF Score

Get the complete analysis for MEX:FSLR

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

MXN4,042.55
Price
MXN4,511.63
GF Value