Plug Power (MEX:PLUG) Shiller PE Ratio: (As of Aug. 19, 2026)

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MEX:PLUG Plug Power Inc MEX:PLUG
36 GF Score
Price MXN37.00
GF Value MXN24.50
Valuation Significantly Overvalued
! 6 Warning Signs
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What is Plug Power Shiller PE Ratio?

Shiller PE for Stocks: The True Measure of Stock Valuation


Plug Power  (MEX:PLUG) Shiller PE Ratio Explanation

Compared with the regular PE Ratio, which works poorly for cyclical businesses, the Shiller PE Ratio smoothed out the fluctuations of profit margins during business cycles. Therefore it is more accurate in reflecting the valuation of the company.

If a company has consistent business performance, the Shiller PE Ratio should give similar results to regular PE Ratio.

Compared with the PS Ratio, the Shiller PE Ratio makes the comparison between different industries more meaningful.


Be Aware

Shiller PE Ratio assumes that over the long term, businesses and profitability revert to their means. If a company's business model does not work in the future compared with the past, Shiller PE Ratio and PS Ratio will give false valuations.


Plug Power Shiller PE Ratio Related Terms


Plug Power Shiller PE Ratio Historical Data

* Premium members only.

The historical data trend for Plug Power's Shiller PE Ratio 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.

Plug Power Shiller PE Ratio Chart

Plug Power Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
Shiller PE Ratio
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 0.00

Plug Power Quarterly Data
Sep21 Dec21 Mar22 Jun22 Sep22 Dec22 Mar23 Jun23 Sep23 Dec23 Mar24 Jun24 Sep24 Dec24 Mar25 Jun25 Sep25 Dec25 Mar26 Jun26
Shiller PE Ratio 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 0.00

MEX:PLUG vs HAYW, ATKR, FCEL: Shiller PE Ratio Comparison

For the Electrical Equipment & Parts subindustry, Plug Power'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.


Plug Power Shiller PE Ratio vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, Plug Power's Shiller PE Ratio distribution charts can be found below:

* The bar in red indicates where Plug Power's Shiller PE Ratio falls into.


MEX:PLUG
36GF Score
Plug Power Inc MEX:PLUG
Shiller PE Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Plug Power Shiller PE Ratio Calculation

For Shiller PE Ratio, 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 PE Ratio is also called PE10.

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

Plug Power's E10 for the quarter that ended in Jun. 2026 is calculated as:

For example, Plug Power'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)
=-2.443/333.9520*333.9520
=-2.443

Current CPI (Jun. 2026) = 333.9520.

Plug Power Quarterly Data

Earnings per Share (Diluted) CPI Adj_EPS
201609 -1.353 241.428 -1.872
201612 -2.268 241.432 -3.137
201703 -2.448 243.801 -3.353
201706 -3.434 244.955 -4.682
201709 -3.267 246.819 -4.420
201712 -1.768 246.524 -2.395
201803 -1.635 249.554 -2.188
201806 -2.358 251.989 -3.125
201809 -1.309 252.439 -1.732
201812 -1.571 251.233 -2.088
201903 -2.716 254.202 -3.568
201906 -1.537 256.143 -2.004
201909 -1.579 256.759 -2.054
201912 -1.320 256.974 -1.715
202003 -2.814 258.115 -3.641
202006 -0.692 257.797 -0.896
202009 -3.976 260.280 -5.101
202012 -22.279 260.474 -28.564
202103 -2.453 264.877 -3.093
202106 -3.583 271.696 -4.404
202109 -3.907 274.310 -4.756
202112 -6.770 278.802 -8.109
202203 -5.376 287.504 -6.245
202206 -6.035 296.311 -6.802
202209 -6.034 296.808 -6.789
202212 -7.408 296.797 -8.335
202303 -6.309 301.836 -6.980
202306 -6.858 305.109 -7.506
202309 -8.187 307.789 -8.883
202312 -18.332 306.746 -19.958
202403 -7.634 312.332 -8.162
202406 -6.595 314.175 -7.010
202409 -4.923 315.301 -5.214
202412 -34.412 315.605 -36.412
202503 -4.296 319.799 -4.486
202506 -3.766 322.561 -3.899
202509 -5.687 324.800 -5.847
202512 -12.424 324.054 -12.803
202603 -3.246 330.213 -3.283
202606 -2.443 333.952 -2.443

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

Is Plug Power (MEX:PLUG) Overvalued in 2026?

Based on GuruFocus' analysis, Plug Power stock appears to be overvalued. The current stock price of MXN37.00 is trading 51% above its estimated GF Value™ of MXN24.50. GuruFocus considers Plug Power to be Significantly Overvalued.

Key valuation signals for MEX:PLUG:

  • Shiller PE Ratio:
  • GF Value™: MXN24.50 vs. price of MXN37.00 (51% above fair value)
  • GF Score™: 36/100 with 6 warning signs

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


Plug Power Business Description

Address 125 Vista Boulevard, Slingerlands, NY, USA, 12159
Plug Power Inc is building an end-to-end green hydrogen ecosystem, from production, storage, and delivery to energy generation. The company plans to build and operate green hydrogen highways across North America and Europe. Plug will deliver its green hydrogen solutions directly to its customers and through joint venture partners into multiple end markets, including material handling, e-mobility, power generation, and industrial applications.
36GF Score

Get the complete analysis for MEX:PLUG

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

MXN37.00
Price
MXN24.50
GF Value