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Energy RecoveryERII -1.27%65 Shiller PE Ratio is 21.11 as of Aug. 24, 2026, which is 78% below its 10-year median of 95.42. GuruFocus rates ERII with a GF Score™ of 65/100 and a GF Value™ of $12.80 (Significantly Undervalued). The stock has 6 warning signs investors should review. Among 1,814 Industrial Products companies, Energy Recovery ranks better than 62.68% on this metric.
As of today (2026-08-24), Energy Recovery's current share price is $7.81. Energy Recovery's E10 for the quarter that ended in Jun. 2026 was $0.37. Energy Recovery's Shiller PE Ratio for today is 21.11.
The historical rank and industry rank for Energy Recovery's Shiller PE Ratio or its related term are showing as below:
ERII'
s Shiller PE Ratio Range Over the Past 10 Years
Min: 20.68 Med: 95.42 Max: 1084
Current: 21.08
During the past years, Energy Recovery's highest Shiller PE Ratio was 1084.00. The lowest was 20.68. And the median was 95.42.
ERII's Shiller PE Ratio is ranked better than 62.68% of 1814
companies
in the Industrial Products industry
Industry Median: 28.54
vs ERII: 21.08
E10 is a concept invented by Prof. Robert Shiller, who uses E10 for his Shiller PE Ratio calculation. E10 is the average of the inflation adjusted earnings of a company over the past 10 years.
Energy Recovery's adjusted earnings per share data for the three months ended in Jun. 2026 was $-0.060. Add all the adjusted EPS for the past 10 years together and divide 10 will get our E10, which is $0.37 for the trailing ten years ended in Jun. 2026.
Shiller PE for Stocks: The True Measure of Stock Valuation
Energy Recovery (NAS:ERII) 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.
Energy Recovery Shiller PE Ratio Related Terms
Energy Recovery Shiller PE Ratio Historical Data
* Premium members only.
The historical data trend for Energy Recovery'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.
ERII vs ZONE, ARQ, FTEK: Shiller PE Ratio Comparison
For the Pollution & Treatment Controls subindustry, Energy Recovery'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.
Energy Recovery Shiller PE Ratio vs Industrial Products Industry
For the Industrial Products industry and Industrials sector, Energy Recovery's Shiller PE Ratio distribution charts can be found below:
* The bar in red indicates where Energy Recovery's Shiller PE Ratio falls into.
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.
Energy Recovery's Shiller PE Ratio for today is calculated as
* 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.
Energy Recovery's E10 for the quarter that ended in Jun. 2026 is calculated as:
For example, Energy Recovery's adjusted earnings per share data for the three months ended in Jun. 2026 was:
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.
Energy Recovery (ERII) has a Shiller PE Ratio of 21.11 as of Aug. 24, 2026. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Energy Recovery and its competitors. This is 78% below median its historical median of 95.42. Over the past decade, Energy Recovery's Shiller PE Ratio has ranged from 20.68 to 1,084.00. According to the industry distribution chart, Energy Recovery ranks #677 out of 1814 companies in the Industrial Products industry, placing it in the top 37.3%.
Is Energy Recovery's Shiller PE Ratio too high?
Energy Recovery's current Shiller PE Ratio of 21.11 is 78% below median its 10-year median of 95.42. Over the past 10 years, this metric has ranged from a low of 20.68 to a high of 1,084.00. The Industrial Products industry median Shiller PE Ratio is 28.54. Energy Recovery's value of 21.11 is 26% below this industry median. Based on the distribution chart, Energy Recovery ranks #677 out of 1814 companies in the Industrial Products industry, which is above the industry midpoint. Overall, Energy Recovery has a GF Score™ of 65/100 and is considered Significantly Undervalued, reflecting its overall financial health beyond just this single metric.
How does Energy Recovery's Shiller PE Ratio compare to ZONE and ARQ?
According to the Industrial Products industry distribution chart, Energy Recovery ranks #677 out of 1814 companies for Shiller PE Ratio. This puts Energy Recovery in the upper half of its industry. The industry median Shiller PE Ratio is 28.54. Energy Recovery's value of 21.11 is 26% below this benchmark. Historically, Energy Recovery's own Shiller PE Ratio has ranged from 20.68 to 1,084.00 over the past decade. While the company's 10-year median is 95.42 vs. the industry median of 28.54, Energy Recovery has consistently been below the industry average. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good Shiller PE Ratio for an Industrial Products company?
The median Shiller PE Ratio among Industrial Products companies is 28.54, based on 1,814 companies in the industry. Companies in the top quartile (top 25%) have a Shiller PE Ratio significantly above this median, while those in the bottom quartile fall well below. However, Shiller PE Ratio should not be evaluated in isolation — investors should consider it alongside profitability, growth, and financial strength metrics. Energy Recovery's current Shiller PE Ratio of 21.11 is 26% below the industry median. Use the industry distribution chart on this page to see where any company falls relative to its peers.
What does a high Shiller PE Ratio mean?
A high Shiller PE Ratio can signal that a stock is expensive relative to its fundamentals. Shiller price-earnings ratio is the ratio of share price to a company's inflation-adjusted earnings over a 10-year period. View historical data on Energy Recovery and its competitors. For the Industrial Products industry, the median Shiller PE Ratio is 28.54 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Energy Recovery's current Shiller PE Ratio is 21.11, which is 78% below median its own 10-year median of 95.42. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Energy Recovery stock overvalued right now?
Based on GuruFocus' analysis, Energy Recovery (ERII) is currently considered Significantly Undervalued. The stock's GF Value™ is $12.80, compared to a current price of $7.81 — trading 39% below its estimated fair value. The current Shiller PE Ratio is 21.11, which is 78% below median its 10-year median of 95.42 and 26% below the Industrial Products industry median of 28.54. Energy Recovery's overall GF Score™ is 65/100 with 6 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is Shiller PE Ratio calculated?
Shiller PE Ratio is calculated from a company's financial statements. For Energy Recovery (ERII), the current Shiller PE Ratio is 21.11 as of Aug. 24, 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 Energy Recovery (ERII) Overvalued in 2026?
Based on GuruFocus' analysis, Energy Recovery stock appears to be undervalued.
The current stock price of $7.81 is trading 39% below its estimated GF Value™ of $12.80.
GuruFocus considers Energy Recovery to be Significantly Undervalued.
Key valuation signals for ERII:
Shiller PE Ratio: 21.11 (78% below median its 10-year median of 95.42)
GF Value™: $12.80 vs. price of $7.81 (39% below fair value)
Industry Position: 26% below the Industrial Products median (#677 of 1814)
No single metric tells the full story. See the ERII stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.
Energy Recovery Inc designs and manufactures energy-saving technologies. The firm uses its proprietary pressure exchanger technology to help customers in multiple industries improve their operations and lower their emissions. Using its proprietary technology, it offers energy recovery devices, including pressure exchangers, pumps, and turbochargers, mainly used for seawater desalination and wastewater treatment. Additionally, the company is involved in the development of emerging technologies, such as the PX G1300 used in industrial and commercial refrigeration applications. The firm's reportable operating segments are: Water, which generates maximum revenue, and Emerging Technologies. Geographically, it generates maximum revenue from the Middle East, and the rest from other markets.
65GF Score
Get the complete analysis for ERII
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