One of the best investments we can make is in our own knowledge and skill set. With that in mind, this article will work through how we can use Return On Equity (ROE) to better understand a business. By way of learning-by-doing, we'll look at ROE to gain a better understanding of CGN Power Co., Ltd. (HKG:1816).
Return on equity or ROE is a key measure used to assess how efficiently a company's management is utilizing the company's capital. In short, ROE shows the profit each dollar generates with respect to its shareholder investments.
How Do You Calculate Return On Equity?
ROE can be calculated by using the formula:
Return on Equity = Net Profit (from continuing operations) ÷ Shareholders' Equity
So, based on the above formula, the ROE for CGN Power is:
8.5% = CN¥15b ÷ CN¥175b (Based on the trailing twelve months to September 2025).
The 'return' is the yearly profit. One way to conceptualize this is that for each HK$1 of shareholders' capital it has, the company made HK$0.08 in profit.
View our latest analysis for CGN Power
Does CGN Power Have A Good ROE?
Arguably the easiest way to assess company's ROE is to compare it with the average in its industry. Importantly, this is far from a perfect measure, because companies differ significantly within the same industry classification. As you can see in the graphic below, CGN Power has a higher ROE than the average (7.0%) in the Renewable Energy industry.
That is a good sign. Bear in mind, a high ROE doesn't always mean superior financial performance. A higher proportion of debt in a company's capital structure may also result in a high ROE, where the high debt levels could be a huge risk .
Why You Should Consider Debt When Looking At ROE
Most companies need money -- from somewhere -- to grow their profits. That cash can come from issuing shares, retained earnings, or debt. In the case of the first and second options, the ROE will reflect this use of cash, for growth. In the latter case, the debt used for growth will improve returns, but won't affect the total equity. Thus the use of debt can improve ROE, albeit along with extra risk in the case of stormy weather, metaphorically speaking.
CGN Power's Debt And Its 8.5% ROE
CGN Power does use a high amount of debt to increase returns. It has a debt to equity ratio of 1.27. With a fairly low ROE, and significant use of debt, it's hard to get excited about this business at the moment. Debt does bring extra risk, so it's only really worthwhile when a company generates some decent returns from it.
Summary
Return on equity is a useful indicator of the ability of a business to generate profits and return them to shareholders. Companies that can achieve high returns on equity without too much debt are generally of good quality. All else being equal, a higher ROE is better.
But when a business is high quality, the market often bids it up to a price that reflects this. It is important to consider other factors, such as future profit growth -- and how much investment is required going forward. So you might want to check this FREE visualization of analyst forecasts for the company.
If you would prefer check out another company -- one with potentially superior financials -- then do not miss this free list of interesting companies, that have HIGH return on equity and low debt.
New: AI Stock Screener & Alerts
Our new AI Stock Screener scans the market every day to uncover opportunities.
• Dividend Powerhouses (3%+ Yield)
• Undervalued Small Caps with Insider Buying
• High growth Tech and AI Companies
Or build your own from over 50 metrics.
Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team (at) simplywallst.com.
This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.
About SEHK:1816
CGN Power
Operates and manages nuclear power stations, sells electricity generated by these stations, and provides related technical services in the People’s Republic of China.
Established dividend payer and fair value.
Market Insights
Weekly Picks

Crazy Undervalued 42 Baggers Silver Play (Active & Running Mine)

Fiducian: Compliance Clouds or Value Opportunity?
Willamette Valley Vineyards (WVVI): Not-So-Great Value
Recently Updated Narratives
Halyk Bank of Kazakhstan will see revenue grow 11% as their future PE reaches 3.2x soon
Silver's Breakout to over $50US will make Magma’s future shine with drill sampling returning 115g/t Silver and 2.3 g/t Gold at its Peru Mine
SEGRO's Revenue to Rise 14.7% Amidst Optimistic Growth Plans
Popular Narratives

MicroVision will explode future revenue by 380.37% with a vision towards success

NVDA: Expanding AI Demand Will Drive Major Data Center Investments Through 2026
