The Okinawa Electric Power Co (FSE:9511) E10: 円-0.55 (As of Mar. 2026)


FSE:9511 The Okinawa Electric Power Co Inc FSE:9511
54 GF Score
Price 円1,121.00
GF Value 円1,284.56
! 5 Warning Signs
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What is The Okinawa Electric Power Co E10?

The Okinawa Electric Power Co FSE:9511 54 E10 is 円-0.55 as of Mar. 2026. GuruFocus rates FSE:9511 with a GF Score™ of 54/100 and a GF Value™ of 円1,284.56. 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.

The Okinawa Electric Power Co's adjusted earnings per share data for the three months ended in Mar. 2026 was 円-93.030. Add all the adjusted EPS for the past 10 years together and divide 10 will get our e10, which is 円-0.55 for the trailing ten years ended in Mar. 2026.

During the past 3 years, the average E10 Growth Rate was 31.90% 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 The Okinawa Electric Power Co was 31.90% per year. The lowest was -4.20% per year. And the median was -3.40% per year.

As of today (2026-06-29), The Okinawa Electric Power Co's current stock price is 円1121.00. The Okinawa Electric Power Co's E10 for the quarter that ended in Mar. 2026 was 円-0.55. The Okinawa Electric Power Co's Shiller PE Ratio of today is .

During the past 13 years, the highest Shiller PE Ratio of The Okinawa Electric Power Co was 479.84. The lowest was 13.33. And the median was 18.00.


The Okinawa Electric Power Co  (FSE:9511) 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.

During the past 13 years, the highest Shiller P/E Ratio of The Okinawa Electric Power Co was 479.84. The lowest was 13.33. And the median was 18.00.


Be Aware

Shiller PE Ratio works better for cyclical companies. It gives you a better idea on the company's real earnings power.


The Okinawa Electric Power Co E10 Related Terms


The Okinawa Electric Power Co E10 Historical Data

* Premium members only.

The historical data trend for The Okinawa Electric Power Co'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.

The Okinawa Electric Power Co E10 Chart

The Okinawa Electric Power Co Annual Data
Trend Mar17 Mar18 Mar19 Mar20 Mar21 Mar22 Mar23 Mar24 Mar25 Mar26
E10
Get a 7-Day Free Trial Premium Member Only Premium Member Only 115.81 -2.77 -6.69 -6.78 -0.55

The Okinawa Electric Power Co 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 -6.78 -8.30 -1.85 2.49 -0.55

The Okinawa Electric Power Co E10 Competitor Comparison

For the Utilities - Renewable subindustry, The Okinawa Electric Power Co'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.


The Okinawa Electric Power Co Shiller PE Ratio vs Utilities - Independent Power Producers Industry

For the Utilities - Independent Power Producers industry and Utilities sector, The Okinawa Electric Power Co's Shiller PE Ratio distribution charts can be found below:

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


FSE:9511
54GF Score
The Okinawa Electric Power Co Inc FSE:9511
E10 is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

The Okinawa Electric Power Co 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, The Okinawa Electric Power Co'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)
=-93.03/112.7000*112.7000
=-93.030

Current CPI (Mar. 2026) = 112.7000.

The Okinawa Electric Power Co Quarterly Data

per share eps CPI Adj_EPS
201606 -5.760 98.100 -6.617
201609 139.091 98.000 159.955
201612 22.947 98.400 26.282
201703 -59.069 98.100 -67.860
201706 2.343 98.500 2.681
201709 143.169 98.800 163.311
201712 39.248 99.400 44.499
201803 -76.546 99.200 -86.963
201806 -20.810 99.200 -23.642
201809 92.843 99.900 104.739
201812 23.666 99.700 26.752
201903 -30.076 99.700 -33.998
201906 -27.990 99.800 -31.608
201909 146.566 100.100 165.015
201912 59.262 100.500 66.456
202003 -54.640 100.300 -61.395
202006 -7.380 99.900 -8.326
202009 158.992 99.900 179.363
202012 12.770 99.300 14.493
202103 -11.120 99.900 -12.545
202106 -28.990 99.500 -32.836
202109 99.683 100.100 112.231
202112 -2.702 100.100 -3.042
202203 -32.056 101.100 -35.734
202206 -127.030 101.800 -140.631
202209 -182.660 103.100 -199.668
202212 -227.059 104.100 -245.817
202303 -300.240 104.400 -324.110
202306 -104.980 105.200 -112.464
202309 164.589 106.200 174.663
202312 24.414 106.800 25.763
202403 -40.030 107.200 -42.084
202406 -54.190 108.200 -56.444
202409 152.770 108.900 158.101
202412 73.460 110.700 74.787
202503 -92.450 111.100 -93.781
202506 -26.540 111.700 -26.778
202509 156.050 112.000 157.025
202512 78.300 113.000 78.092
202603 -93.030 112.700 -93.030

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 円-0.55 mean?
The Okinawa Electric Power Co (FSE:9511) has a E10 of 円-0.55 as of Mar. 2026. E10 represents the company's inflation-adjusted earnings per share over a 10-year period. View historical data on The Okinawa Electric Power Co and its competitors.
Is The Okinawa Electric Power Co's E10 too high?
The Okinawa Electric Power Co's current E10 is 円-0.55. Overall, The Okinawa Electric Power Co has a GF Score™ of 54/100, reflecting its overall financial health beyond just this single metric.
How does The Okinawa Electric Power Co's E10 compare to competitors?
The Okinawa Electric Power Co's E10 of 円-0.55 can be compared against companies in the Utilities - Independent Power Producers 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 an Utilities - Independent Power Producers company?
A good E10 depends on the Utilities - Independent Power Producers 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 The Okinawa Electric Power Co and its competitors. The Okinawa Electric Power Co's current E10 is 円-0.55. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is The Okinawa Electric Power Co stock overvalued right now?
The Okinawa Electric Power Co (FSE:9511) has a current E10 of 円-0.55. The stock's GF Value™ is 円1,284.56, compared to a current price of 円1,121.00 — trading 12.7% below its estimated fair value. The current E10 is 円-0.55. The Okinawa Electric Power Co's overall GF Score™ is 54/100 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 The Okinawa Electric Power Co (FSE:9511), the current E10 is 円-0.55 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 The Okinawa Electric Power Co (FSE:9511) Overvalued in 2026?

Based on GuruFocus' analysis, The Okinawa Electric Power Co stock appears to be undervalued. The current stock price of 円1,121.00 is trading 12.7% below its estimated GF Value™ of 円1,284.56.

Key valuation signals for FSE:9511:

  • E10: 円-0.55
  • GF Value™: 円1,284.56 vs. price of 円1,121.00 (12.7% below fair value)
  • GF Score™: 54/100 with 5 warning signs

No single metric tells the full story. See the FSE:9511 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


The Okinawa Electric Power Co Business Description

Other Exchanges 9511:Japan
Address 5-2-1 Makiminato, Urasoe, JPN, 901-2602
The Okinawa Electric Power Co Inc, or OEPC, is the exclusive supplier of electric power throughout the Okinawa Prefecture at the southwestern tip of Japan. OEPC is involved in the generation, transmission, and distribution of electricity in the region. The company operates a portfolio of coal, natural gas, oil, solar, and wind power plants. OEPC's power-generating facilities that utilize fossil fuel inputs are responsible for almost all of the company's power production. Nearly all of OEPC's revenue is derived from the sale of electric energy in Okinawa. While the company's customers are mainly residential consumers, industrial users account for most of OEPC's electric energy sales in terms of volume and revenue.
54GF Score

Get the complete analysis for FSE:9511

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

円1,121.00
Price
円1,284.56
GF Value