Growth stocks are attractive to many investors, as above-average financial growth helps these stocks easily grab the market's attention and produce exceptional returns. But finding a great growth stock is not easy at all.By their very nature, these stocks carry above-average risk and volatility. Moreover, if a company's growth story is over or nearing its end, betting on it could lead to significant loss.However, the task of finding cutting-edge growth stocks is made easy with the help of the Zacks Growth Style Score (part of the Zacks Style Scores system), which looks beyond the traditional growth attributes to analyze a company's real growth prospects.Our proprietary system currently recommends Duke Energy (DUK) as one such stock. This company not only has a favorable Growth Score, but also carries a top Zacks Rank.Studies have shown that stocks with the best growth features consistently outperform the market. And for stocks that have a combination of a Growth Score of A or B and a Zacks Rank #1 (Strong Buy) or 2 (Buy), returns are even better.While there are numerous reasons why the stock of this electric utility is a great growth pick right now, we have highlighted three of the most important factors below:Earnings GrowthEarnings growth is arguably the most important factor, as stocks exhibiting exceptionally surging profit levels tend to attract the attention of most investors. And for growth investors, double-digit earnings growth is definitely preferable, and often an indication of strong prospects (and stock price gains) for the company under consideration.While the historical EPS growth rate for Duke Energy is 2.2%, investors should actually focus on the projected growth. The company's EPS is expected to grow 2.6% this year, crushing the industry average, which calls for EPS growth of 1.5%.Cash Flow GrowthCash is the lifeblood of any business, but higher-than-average cash flow growth is more beneficial and important for growth-oriented companies than for mature companies. That's because, high cash accumulation enables these companies to undertake new projects without raising expensive outside funds.Right now, year-over-year cash flow growth for Duke Energy is 11.1%, which is higher than many of its peers. In fact, the rate compares to the industry average of 3.8%.While investors should actually consider the current cash flow growth, it's worth taking a look at the historical rate too for putting the current reading into proper perspective. The company's annualized cash flow growth rate has been 5.8% over the past 3-5 years versus the industry average of 5.5%.Promising Earnings Estimate RevisionsSuperiority of a stock in terms of the metrics outlined above can be further validated by looking at the trend in earnings estimate revisions. A positive trend is of course favorable here. Empirical research shows that there is a strong correlation between trends in earnings estimate revisions and near-term stock price movements.There have been upward revisions in current-year earnings estimates for Duke Energy. The Zacks Consensus Estimate for the current year has surged 1.4% over the past month.Bottom LineWhile the overall earnings estimate revisions have made Duke Energy a Zacks Rank #2 stock, it has earned itself a Growth Score of B based on a number of factors, including the ones discussed above.You can see the complete list of today's Zacks #1 Rank (Strong Buy) stocks here.This combination indicates that Duke Energy is a potential outperformer and a solid choice for growth investors.Want the latest recommendations from Zacks Investment Research? Today, you can download 7 Best Stocks for the Next 30 Days. Click to get this free report Duke Energy Corporation (DUK): Free Stock Analysis Report To read this article on Zacks.com click here.