AES vs NRG vs VST

For growth investors, NRG Energy, Inc.

(NRG) is the stronger pick with 9. 2% revenue growth year-over-year, versus -12. 4% for Vistra Corp. (VST). The AES Corporation (AES) offers the better valuation at 11. 4x trailing P/E (6. 2x 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, The AES Corporation (AES) is the cheapest at 11.

4x versus Vistra Corp. at 71. 6x. On forward P/E, The AES Corporation is actually cheaper at 6. 2x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: The AES Corporation wins at 0. 08x versus Vistra Corp. 's 1. 65x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Vistra Corp.

(VST) delivered a total return of +910. 5%, compared to -30. 5% for The AES Corporation (AES). Over 10 years, the gap is even starker: VST returned +969. 7% versus AES's +83. 4%. 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), The AES Corporation (AES) is the lower-risk stock at 1.

01β versus NRG Energy, Inc. 's 1. 84β — meaning NRG is approximately 83% more volatile than AES relative to the S&P 500. On balance sheet safety, The AES Corporation (AES) carries a lower debt/equity ratio of 3% versus 10% for NRG Energy, Inc. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), NRG Energy, Inc.

(NRG) is pulling ahead at 9. 2% versus -12. 4% for Vistra Corp. (VST). On earnings-per-share growth, the picture is similar: NRG Energy, Inc. grew EPS -19. 6% year-over-year, compared to -68. 4% for Vistra Corp.. Over a 3-year CAGR, NRG leads at -0. 9% 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.

The AES Corporation (AES) is the more profitable company, earning 7.

8% net margin versus 2. 8% for NRG Energy, Inc. — meaning it keeps 7. 8% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: AES leads at 16. 1% versus 6. 0% for NRG. At the gross margin level — before operating expenses — NRG leads at 21. 8%, 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, The AES Corporation (AES) is the more undervalued stock at a PEG of 0. 08x versus Vistra Corp. 's 1. 65x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, The AES Corporation (AES) trades at 6. 2x forward P/E versus 18. 4x for Vistra Corp. — 12. 3x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for VST: 43. 8% to $227. 60.

All stocks in this comparison pay dividends.

The AES Corporation (AES) offers the highest yield at 4. 9%, versus 0. 6% for Vistra Corp. (VST).

For long-horizon retirement investors, Vistra Corp.

(VST) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (0. 6% yield, +969. 7% 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 (VST: +969. 7%, NRG: +936. 2%), 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: AES is a mid-cap deep-value stock; NRG is a mid-cap quality compounder stock; VST 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.