Plug Power (CHIX:PLUND) Shiller PE Ratio: (As of Sep. 04, 2026)

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CHIX:PLUND Plug Power Inc CHIX:PLUND
17 GF Score
Price €1.93
GF Value €1.31
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  (CHIX:PLUNd) 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

CHIX:PLUND vs HAYW, ATKR, PLPC: 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.


CHIX:PLUND
17GF Score
Plug Power Inc CHIX:PLUND
Shiller PE Ratio is just one metric. See GF Score™, valuation, warning signs, and more.
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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)
=-0.122/333.9520*333.9520
=-0.122

Current CPI (Jun. 2026) = 333.9520.

Plug Power Quarterly Data

Earnings per Share (Diluted) CPI Adj_EPS
201609 -0.062 241.428 -0.086
201612 -0.104 241.432 -0.144
201703 -0.122 243.801 -0.167
201706 -0.169 244.955 -0.230
201709 -0.151 246.819 -0.204
201712 -0.076 246.524 -0.103
201803 -0.073 249.554 -0.098
201806 -0.103 251.989 -0.137
201809 -0.060 252.439 -0.079
201812 -0.070 251.233 -0.093
201903 -0.124 254.202 -0.163
201906 -0.071 256.143 -0.093
201909 -0.073 256.759 -0.095
201912 -0.063 256.974 -0.082
202003 -0.109 258.115 -0.141
202006 -0.027 257.797 -0.035
202009 -0.153 260.280 -0.196
202012 -0.921 260.474 -1.181
202103 -0.101 264.877 -0.127
202106 -0.149 271.696 -0.183
202109 -0.162 274.310 -0.197
202112 -0.292 278.802 -0.350
202203 -0.245 287.504 -0.285
202206 -0.284 296.311 -0.320
202209 -0.303 296.808 -0.341
202212 -0.359 296.797 -0.404
202303 -0.327 301.836 -0.362
202306 -0.369 305.109 -0.404
202309 -0.440 307.789 -0.477
202312 -0.990 306.746 -1.078
202403 -0.423 312.332 -0.452
202406 -0.334 314.175 -0.355
202409 -0.225 315.301 -0.238
202412 -1.576 315.605 -1.668
202503 -0.194 319.799 -0.203
202506 -0.173 322.561 -0.179
202509 -0.264 324.800 -0.271
202512 -0.589 324.054 -0.607
202603 -0.156 330.213 -0.158
202606 -0.122 333.952 -0.122

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 (CHIX:PLUND) Overvalued in 2026?

Based on GuruFocus' analysis, Plug Power stock appears to be overvalued. The current stock price of €1.93 is trading 47.4% above its estimated GF Value™ of €1.31. GuruFocus considers Plug Power to be Significantly Overvalued.

Key valuation signals for CHIX:PLUND:

  • Shiller PE Ratio:
  • GF Value™: €1.31 vs. price of €1.93 (47.4% above fair value)
  • GF Score™: 17/100 with 6 warning signs

No single metric tells the full story. See the CHIX:PLUND 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.
17GF Score

Get the complete analysis for CHIX:PLUND

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

€1.93
Price
€1.31
GF Value