CPWR (Ocean Thermal Energy) 3-Year Sharpe Ratio: 0.89 (As of Aug. 29, 2026)

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.

What is Ocean Thermal Energy 3-Year Sharpe Ratio?

Ocean Thermal Energy CPWR 3-Year Sharpe Ratio is 0.89 as of Aug. 29, 2026. The stock has 3 warning signs investors should review.

The 3-Year Sharpe Ratio measures the additional return that an investor receives per unit of increase in risk over the past three years. As of today (2026-08-29), Ocean Thermal Energy's 3-Year Sharpe Ratio is 0.89.

Ocean Thermal Energy  (OTCPK:CPWR) 3-Year Sharpe Ratio Explanation

The 3-Year Sharpe Ratio inidicates the risk-adjusted return of an investment over the past three years. It is calculated as the annualized result of the average three-year monthly excess returns divided by its standard deviation in the three-year period. The monthly excess return is the monthly investment return minus the monthly risk-free rate (typically the 10-year Treasury Constant Maturity Rate). If the risk-free rate for a specific region is not available, U.S. data is used by default.

The greater a portfolio's Sharpe Ratio, the better its risk-adjusted performance. A negative Sharpe Ratio means the risk-free rate is greater than the portfolio’s historical or projected return, or else the portfolio's return is expected to be negative.

Ocean Thermal Energy 3-Year Sharpe Ratio Related Terms

CPWR vs BNRG, CREG, ETRXF: 3-Year Sharpe Ratio Comparison

For the Utilities - Renewable subindustry, Ocean Thermal Energy's 3-Year Sharpe Ratio, along with its competitors' market caps and 3-Year Sharpe 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.

Ocean Thermal Energy 3-Year Sharpe Ratio vs Utilities - Independent Power Producers Industry

For the Utilities - Independent Power Producers industry and Utilities sector, Ocean Thermal Energy's 3-Year Sharpe Ratio distribution charts can be found below:

* The bar in red indicates where Ocean Thermal Energy's 3-Year Sharpe Ratio falls into.


Ocean Thermal Energy 3-Year Sharpe Ratio Calculation

The 3-Year Sharpe Ratio measures the performance of an investment such as a stock or portfolio compared to a risk-free asset in the last three years. A stock / portfolio's 3-Year Sharpe Ratio can be calculated by dividing the difference between the three-year average monthly returns of the investment and the risk-free rate, by the standard deviation of the investment returns over the past three years.

Frequently Asked Questions Learn more about 3-Year Sharpe Ratio →
What does a 3-Year Sharpe Ratio of 0.89 mean?
Ocean Thermal Energy (CPWR) has a 3-Year Sharpe Ratio of 0.89 as of Aug. 29, 2026. 3-Year Sharpe Ratio measures the additional return that an investor receives per unit of increase in risk over the past three years. View historical data for Ocean Thermal Energy and its competitors.
Is Ocean Thermal Energy's 3-Year Sharpe Ratio too high?
Ocean Thermal Energy's current 3-Year Sharpe Ratio is 0.89.
How does Ocean Thermal Energy's 3-Year Sharpe Ratio compare to BNRG and CREG?
Ocean Thermal Energy's 3-Year Sharpe Ratio of 0.89 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 3-Year Sharpe Ratio for an Utilities - Independent Power Producers company?
A good 3-Year Sharpe Ratio depends on the Utilities - Independent Power Producers industry context. However, 3-Year Sharpe Ratio 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 3-Year Sharpe Ratio mean?
A high 3-Year Sharpe Ratio can signal that a stock is expensive relative to its fundamentals. 3-Year Sharpe Ratio measures the additional return that an investor receives per unit of increase in risk over the past three years. View historical data for Ocean Thermal Energy and its competitors. Ocean Thermal Energy's current 3-Year Sharpe Ratio is 0.89. However, context matters — high-growth companies often justify higher valuations. Always evaluate alongside other metrics like GF Score™ and GF Value™.
Is Ocean Thermal Energy stock overvalued right now?
Ocean Thermal Energy (CPWR) has a current 3-Year Sharpe Ratio of 0.89. The current 3-Year Sharpe Ratio is 0.89. Investors should evaluate multiple metrics — including profitability, growth, and financial strength — before making a decision.
How is 3-Year Sharpe Ratio calculated?
3-Year Sharpe Ratio is calculated from a company's financial statements. For Ocean Thermal Energy (CPWR), the current 3-Year Sharpe Ratio is 0.89 as of Aug. 29, 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.

Ocean Thermal Energy Business Description

Address 3675 Market Street, Suite 200, Philadelphia, PA, USA, 19104
Ocean Thermal Energy Corp is engaged in the business of developing designs for renewable energy systems using Ocean Thermal Energy Conversion (OTEC) technology. OTEC uses the natural temperature difference between cooler deep ocean water and warmer shallow or surface water to create energy and produce electricity. The company also aims to develop projects for renewable power generation, desalinated water production, and air conditioning using the proprietary technologies designed to extract energy from the temperature differences between warm surface water and cold deep water. In addition, the projects provide ancillary products such as potable/bottled water and high-profit aquaculture, mariculture, and agriculture opportunities.