NRG vs EXC vs DUK vs SO

For growth investors, The Southern Company (SO) is the stronger pick with 10.

6% revenue growth year-over-year, versus 5. 3% for Exelon Corporation (EXC). Exelon Corporation (EXC) offers the better valuation at 16. 2x trailing P/E (15. 6x forward), making it the more compelling value choice. Analysts rate NRG Energy, Inc. (NRG) a "Buy" — based on 26 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, Exelon Corporation (EXC) is the cheapest at 16.

2x versus NRG Energy, Inc. at 35. 3x. On forward P/E, NRG Energy, Inc. is actually cheaper at 15. 5x — notably different from the trailing picture, reflecting expected earnings growth. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Duke Energy Corporation wins at 0. 63x versus The Southern Company's 3. 45x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, NRG Energy, Inc.

(NRG) delivered a total return of +330. 5%, compared to +44. 0% for Duke Energy Corporation (DUK). Over 10 years, the gap is even starker: NRG returned +870. 6% versus DUK's +104. 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.

24β versus NRG Energy, Inc. 's 1. 84β — meaning NRG is approximately -855% more volatile than DUK relative to the S&P 500. On balance sheet safety, The Southern Company (SO) carries a lower debt/equity ratio of 169% versus 10% for NRG Energy, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), The Southern Company (SO) is pulling ahead at 10.

6% versus 5. 3% for Exelon Corporation (EXC). On earnings-per-share growth, the picture is similar: Exelon Corporation grew EPS 11. 8% year-over-year, compared to -19. 6% for NRG Energy, Inc.. Over a 3-year CAGR, EXC leads at 8. 3% annualised revenue growth. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

Duke Energy Corporation (DUK) is the more profitable company, earning 15.

4% net margin versus 2. 8% for NRG Energy, Inc. — meaning it keeps 15. 4% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: DUK leads at 26. 6% versus 6. 0% for NRG. At the gross margin level — before operating expenses — DUK leads at 31. 6%, 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. 63x versus The Southern Company's 3. 45x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, NRG Energy, Inc. (NRG) trades at 15. 5x forward P/E versus 20. 2x for The Southern Company — 4. 7x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for NRG: 36. 9% to $194. 00.

All stocks in this comparison pay dividends.

Exelon Corporation (EXC) offers the highest yield at 3. 6%, versus 1. 5% for NRG Energy, Inc. (NRG).

For long-horizon retirement investors, Duke Energy Corporation (DUK) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β -0.

24), 3. 4% yield, +104. 1% 10Y return). NRG Energy, Inc. (NRG) carries a higher beta of 1. 84 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (DUK: +104. 1%, NRG: +870. 6%), 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.

In terms of investment character: NRG is a mid-cap quality compounder stock; EXC is a mid-cap deep-value stock; DUK is a mid-cap income-oriented stock; SO is a mid-cap quality compounder stock. 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.