Compare WEC Energy Group, Inc. (WEC) vs Duke Energy Corporation (DUK) Stock

Duke Energy Corporation (DUK) offers the better valuation at 20.7x trailing P/E (19.5x forward), making it the more compelling value choice. Analysts rate WEC Energy Group, Inc. (WEC) a "Hold" — based on 34 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

On trailing P/E, Duke Energy Corporation (DUK) is the cheapest at 20.7x versus WEC Energy Group, Inc. at 24.2x. On forward P/E, Duke Energy Corporation is actually cheaper at 19.5x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Duke Energy Corporation wins at 0.66x versus WEC Energy Group, Inc.'s 4.21x — a PEG below 1.0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Duke Energy Corporation (DUK) delivered a total return of +73.8%, compared to +60.5% for WEC Energy Group, Inc. (WEC). A $10,000 investment in DUK five years ago would be worth approximately $17K today (assuming dividends reinvested). Over 10 years, the gap is even starker: WEC returned +155.9% versus DUK's +128.1%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), Duke Energy Corporation (DUK) is the lower-risk stock at -0.05β versus WEC Energy Group, Inc.'s 0.09β — meaning WEC is approximately -265% more volatile than DUK relative to the S&P 500. On balance sheet safety, WEC Energy Group, Inc. (WEC) carries a lower debt/equity ratio of 9% versus 171% for Duke Energy Corporation — giving it more financial flexibility in a downturn.

WEC Energy Group, Inc. (WEC) is the more profitable company, earning 15.9% net margin versus 15.4% for Duke Energy Corporation — meaning it keeps 15.9% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: DUK leads at 26.6% versus 24.2% for WEC. At the gross margin level — before operating expenses — WEC leads at 50.5%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

The PEG ratio (forward P/E divided by expected earnings growth rate) is the most precise measure of undervaluation relative to growth potential. By this metric, Duke Energy Corporation (DUK) is the more undervalued stock at a PEG of 0.66x versus WEC Energy Group, Inc.'s 4.21x. A PEG below 1.0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Duke Energy Corporation (DUK) trades at 19.5x forward P/E versus 20.9x for WEC Energy Group, Inc. — 1.4x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for WEC: 3.5% to $121.00.

In this comparison, WEC (3.0% yield) pays a dividend. DUK does not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, WEC Energy Group, Inc. (WEC) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.09), 3.0% yield, +155.9% 10Y return). Both have compounded well over 10 years (WEC: +155.9%, DUK: +128.1%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

Both stocks operate in the Utilities sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both. WEC pays a dividend while DUK does not, making them suitable for different income and tax situations. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.