Grand Green Energy (ROCO:6639) 10-Year RORE % : 0.00% (As of Dec. 2025)

Author: Vera Yuan Vera Yuan
Vera Yuan
Vera Yuan
Director of Data and Quant Analytics at GuruFocus
Focused on building reliable datasets, financial models, and research tools for value-minded investors. Committed to turning complex data into practical guidance for value-investing and long-term wealth.
Reviewed by: Charlie Tian Charlie Tian
Charlie Tian
Charlie Tian
Founder & CEO of GuruFocus
Dr. Charlie Tian is the founder and CEO of GuruFocus.com, a leading global investment research platform established in 2004. With a Ph.D. in physics, Dr. Tian transitioned from science to finance, applying a data-driven, disciplined approach to value investing.

ROCO:6639 Grand Green Energy Corp ROCO:6639
52 GF Score
Price NT$4.30
GF Value NT$4.27
Valuation Fairly Valued
! 4 Warning Signs
View Full Analysis

What is Grand Green Energy 10-Year RORE %?

Grand Green Energy ROCO:6639 -1.15% 52 10-Year RORE % is 0.00 as of Dec. 2025. GuruFocus rates ROCO:6639 with a GF Score™ of 52/100 and a GF Value™ of NT$4.27 (Fairly Valued). The stock has 4 warning signs investors should review. Among 1,900 Industrial Products companies, Grand Green Energy ranks worse than 52631.53% on this metric.

Return on Retained Earnings (RORE) is an indicator of a company's growth potential, it shows how much a company earns by reinvesting its retained earnings, i.e. profits after dividend payments. Grand Green Energy's 10-Year RORE % for the quarter that ended in Dec. 2025 was 0.00%.

The industry rank for Grand Green Energy's 10-Year RORE % or its related term are showing as below:

ROCO:6639's 10-Year RORE % is not ranked *
in the Industrial Products industry.
Industry Median: 8.36
* Ranked among companies with meaningful 10-Year RORE % only.

Grand Green Energy  (ROCO:6639) 10-Year RORE % Explanation

Return on Retained Earnings (RORE) is important to investors because it reveals a company's efficiency and growth potential. A higher RORE indicates a higher return. A high RORE indicates that the company should reinvest profits into the business. A lower RORE suggests that the company should distribute profits to shareholders by paying out dividends, since those dollars aren't generating much additional growth for the company.

There are a several different ways to arrive at the Return on Retained Earnings. The simplest way to calculate it is by using published information on Earnings per Share (EPS) and Dividend per Share (DPS) over a selected period. Here, 10-year period is chosen.

Be Aware

Please keep in mind that the RORE is relative to the nature of the business and its competitors. If another company in the same sector is producing a lower return on retained earnings, it doesn’t necessarily mean it’s a bad investment. It may just suggest the company is older and no longer in a high growth stage. At such a stage in the business cycle, it would be expected to see a lower RORE and higher dividend payout.


Grand Green Energy 10-Year RORE % Related Terms


Grand Green Energy 10-Year RORE % Historical Data

* Premium members only.

The historical data trend for Grand Green Energy's 10-Year RORE % 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.

Grand Green Energy 10-Year RORE % Chart

Grand Green Energy Annual Data
Trend Dec16 Dec17 Dec18 Dec19 Dec20 Dec21 Dec22 Dec23 Dec24 Dec25
10-Year RORE %
Get a 7-Day Free Trial Premium Member Only Premium Member Only 0.00 0.00 0.00 0.00 0.00

Grand Green Energy Semi-Annual Data
Dec15 Dec16 Jun17 Dec17 Jun18 Dec18 Jun19 Dec19 Jun20 Dec20 Jun21 Dec21 Jun22 Dec22 Jun23 Dec23 Jun24 Dec24 Jun25 Dec25
10-Year RORE % 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

ROCO:6639 vs GEV, ETN, PH: 10-Year RORE % Comparison

For the Specialty Industrial Machinery subindustry, Grand Green Energy's 10-Year RORE %, along with its competitors' market caps and 10-Year RORE % 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.


Grand Green Energy 10-Year RORE % vs Industrial Products Industry

For the Industrial Products industry and Industrials sector, Grand Green Energy's 10-Year RORE % distribution charts can be found below:

* The bar in red indicates where Grand Green Energy's 10-Year RORE % falls into.


ROCO:6639
52GF Score
Grand Green Energy Corp ROCO:6639
10-Year RORE % is just one metric. See GF Score™, valuation, warning signs, and more.
View Full Analysis

Grand Green Energy 10-Year RORE % Calculation

Grand Green Energy's 10-Year RORE % for the quarter that ended in Dec. 2025 is calculated as:

10-Year RORE %=( Most Recent EPS (Diluted)- First Period EPS (Diluted) )/( Cumulative EPS (Diluted) for 10-year -Cumulative Dividends per Share for 10-year )
=( - )/( -5.678-0.2 )
=/-5.878
=0.00 %

* 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.

In the calculation of 10-Year RORE %, the most recent and first period EPS (Diluted) is the trailing twelve months (TTM) data ended in Dec. 2025 and 10-year before.

Frequently Asked Questions Learn more about 10-Year RORE % →
What does a 10-Year RORE % of 0.00 mean?
Grand Green Energy (ROCO:6639) has a 10-Year RORE % of 0.00 as of Dec. 2025. 10-Year RORE % shows how much a company earns by reinvesting its retained earnings in 10-year. View historical data on Grand Green Energy and its competitors. According to the industry distribution chart, Grand Green Energy ranks #999999 out of 1900 companies in the Industrial Products industry.
Is Grand Green Energy's 10-Year RORE % too high?
Grand Green Energy's current 10-Year RORE % is 0.00. Based on the distribution chart, Grand Green Energy ranks #999999 out of 1900 companies in the Industrial Products industry, which is in the bottom quartile relative to peers. Overall, Grand Green Energy has a GF Score™ of 52/100 and is considered Fairly Valued, reflecting its overall financial health beyond just this single metric.
How does Grand Green Energy's 10-Year RORE % compare to GEV and ETN?
According to the Industrial Products industry distribution chart, Grand Green Energy ranks #999999 out of 1900 companies for 10-Year RORE %. This places Grand Green Energy in the lower half of its industry. The industry median 10-Year RORE % is 8.36. See the competitive comparison table and distribution chart on this page for a detailed peer-by-peer breakdown.
What is a good 10-Year RORE % for an Industrial Products company?
The median 10-Year RORE % among Industrial Products companies is 8.36, based on 1,900 companies in the industry. Companies in the top quartile (top 25%) have a 10-Year RORE % significantly above this median, while those in the bottom quartile fall well below. However, 10-Year RORE % 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 10-Year RORE % mean?
A high 10-Year RORE % can signal that a stock is expensive relative to its fundamentals. 10-Year RORE % shows how much a company earns by reinvesting its retained earnings in 10-year. View historical data on Grand Green Energy and its competitors. For the Industrial Products industry, the median 10-Year RORE % is 8.36 — values significantly above this may indicate overvaluation, while values below may suggest a bargain or underlying issues. Grand Green Energy's current 10-Year RORE % is 0.00. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Grand Green Energy stock overvalued right now?
Based on GuruFocus' analysis, Grand Green Energy (ROCO:6639) is currently considered Fairly Valued. The stock's GF Value™ is NT$4.27, compared to a current price of NT$4.30 — trading 0.7% above its estimated fair value. The current 10-Year RORE % is 0.00. Grand Green Energy's overall GF Score™ is 52/100 with 4 warning signs to review. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 10-Year RORE % calculated?
10-Year RORE % is calculated from a company's financial statements. For Grand Green Energy (ROCO:6639), the current 10-Year RORE % is 0.00 as of Dec. 2025. 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 Grand Green Energy (ROCO:6639) Overvalued in 2026?

Based on GuruFocus' analysis, Grand Green Energy stock appears to be overvalued. The current stock price of NT$4.30 is trading 0.7% above its estimated GF Value™ of NT$4.27. GuruFocus considers Grand Green Energy to be Fairly Valued.

Key valuation signals for ROCO:6639:

  • 10-Year RORE %: 0.00
  • GF Value™: NT$4.27 vs. price of NT$4.30 (0.7% above fair value)
  • GF Score™: 52/100 with 4 warning signs

No single metric tells the full story. See the ROCO:6639 stock analysis page for a complete view including 30-year financials, guru trades, and insider activity.


Grand Green Energy Business Description

Address No.192, Jinshan Street, Yangmei District, Taoyuan City, TWN, 326
Grand Green Energy Corp is mainly engaged in the development and sale of thermal energy supply system and other thermal equipment. The company caters to textile, food, chemical, and paper industry. It also offers air pollution emission equipment.
52GF Score

Get the complete analysis for ROCO:6639

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

NT$4.30
Price
NT$4.27
GF Value