AES vs SEDG: Which Is the Better Buy in 2026?
Last updated October 2026
Short answer
AES is the larger of the two ($10.66B market cap): the incumbent the market prices for continued execution (6.30x forward earnings, beta 0.95). SEDG is the smaller challenger ($1.93B), actually pricier on forward earnings (38.96x): more room to run, but more to prove. The real question is which set of drivers you believe, and whether owning one (or both) leaves you over-concentrated.
AES vs SEDG: the tie-breaker metrics
Same yardstick, side by side (as of October 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.
| Metric | AES | SEDG | What it tells you |
|---|---|---|---|
| Market cap | $10.66B | $1.93B | Size. The larger name is the incumbent; the smaller has more room to grow and more to prove. |
| Forward P/E | 6.30 | 38.96 | Valuation on next year's expected earnings, the same yardstick for both. Lower is cheaper for that growth; higher means the market is paying up. |
| Beta | 0.95 | 1.44 | Volatility vs the market. Above 1 swings harder than the index; below 1 is steadier. Higher beta means bigger drawdowns to hold through. |
| Price vs 52-week range | 39% of range | 6% of range | Where today's price sits between the 52-week low and high. Near the high is momentum with less margin of safety; near the low is out of favor or a discount, depending on why. |
| Price / book | 2.16 | 4.68 | How much you pay over book value. Very high can signal an asset-light, high-return business or a rich price. |
Reading it: AES is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.
Before you buy: how AES and SEDG affect your concentration
The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. AES and SEDG share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.
This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined AES and SEDG exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.
What does The AES Corporation (AES) do?
The AES Corporation is a global electricity company that operates across four segments: Renewables, Utilities, Energy Infrastructure, and New Energy Technologies. It owns or operates a generation fleet of roughly 34,740 megawatts spanning solar, wind, hydro, energy storage, gas, and legacy coal, and it distributes power to about 2.7 million utility customers. A key growth engine has been its renewables development pipeline, with a signed power purchase agreement backlog of about 12.6 gigawatts (around 5.6 GW under construction) as of March 2026, much of it tied to surging electricity demand from AI and cloud data centers. The company has been executing a coal exit while leaning into contracted clean generation and its regulated US utilities.
What does SolarEdge Technologies (SEDG) do?
SolarEdge Technologies (SEDG) is a solar-technology company best known for power optimizers and inverters that convert and manage electricity from solar panels. Its differentiated approach uses module-level power optimizers paired with a central string inverter, letting each panel operate at peak efficiency and improving energy harvest, monitoring, and safety compared with traditional string-only systems. SolarEdge sells into both residential and commercial solar markets globally, with historically strong exposure to Europe and the United States.
AES vs SEDG: how do they differ?
Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.
- AES drivers: Pending $15.00 cash acquisition; Renewables backlog and data-center demand.
- SEDG drivers: Inventory normalization; Storage and platform expansion.
Which fits which kind of investor
A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: The largest risk is deal-specific: a delay, regulatory block, or renegotiation of the $15.00 cash acquisition would remove the price support the stock currently enjoys. For SEDG, solarEdge has been hit hard by a downcycle: bloated channel inventories, weak European residential demand, pricing pressure, and sizable losses and cash burn that prompted restructuring.
AES or SEDG: which should you pick?
Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick AES if you believe its drivers more; SEDG if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the AES and SEDG guides.
AES vs SEDG: the full fundamentals
AES. AES trades at the $15.00 cash offer less a few cents, so headline multiples (a trailing P/E near 5.6 and a forward P/E near 6.3) matter less than the fixed deal price and the odds and timing of a close. With CFIUS, Ohio and European Commission approvals received by October 16, 2026, the spread has narrowed to about 0.2%. The high debt load, roughly $33 billion, is typical of a capital-intensive utility and is why the enterprise value (around $33 billion) is far larger than the equity value.
SEDG. SolarEdge still trades as a cyclical turnaround: revenue has climbed back to about $1.33 billion and free cash flow has turned positive, but GAAP earnings remain negative, so the stock is priced on about 1.5 times sales and a forward P/E near 41 that depends on 2027 estimates. Third-quarter results are due November 4, 2026, with consensus at about $0.04 of adjusted EPS on roughly $327 million of revenue; the 19-analyst mean target of about $38 sits modestly above the $32.66 close, with a consensus hold rating.
Headline figures (approximate, October 2026): AES shows share price / market cap ~$14.97 (Oct 16, 2026), ~$10.7B, acquisition price $15.00/share cash; spread ~3 cents (~0.2%), revenue (ttm) ~$13.1B; Q2 2026 ~$3.42B, net income (ttm) ~$1.9B, EPS ~$2.67; Q2 2026 EPS $0.44 vs ~$0.47 consensus; SEDG shows revenue (ttm) ~$1.33 billion (vs ~$901 million in 2024 and ~$1.18 billion in 2025), revenue growth ~20% year over year in Q2 2026 (~$346 million), gross margin (ttm) ~21%; operating margin ~-6.5%, net income ~$270 million loss TTM; Q2 2026 GAAP loss ~$31 million.
The bottom line: AES vs SEDG
AES and SEDG are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined AES and SEDG exposure against your real portfolio. It is not an investment adviser.
Wondering how AES or SEDG fits the portfolio you already own? Walnut is an AI investing app that connects your brokerage read-only and answers questions like that about your actual holdings: overlap, concentration, and how each position tracks the S&P 500. Compare the best AI portfolio analyzers or see the best AI investing apps in 2026.
Investing in The AES Corporation with AI
Connect the broker you already use and ask Walnut's AI how AES fits what you actually hold: whether you own it already through a fund, what it would do to your concentration, and how it has tracked the S&P 500. Read-only by default, and you approve anything before it reaches your broker.
FAQ
What is the difference between AES and SEDG?
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The AES Corporation is a global electricity company that operates across four segments: Renewables, Utilities, Energy Infrastructure, and New Energy Technologies. SolarEdge Technologies (SEDG) is a solar-technology company best known for power optimizers and inverters that convert and manage electricity from solar panels. They show up together because they share investment themes, but they are different businesses, so the better fit depends on which thesis you are expressing.
Is AES or SEDG the better stock?
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Neither is universally better. AES is the larger incumbent; SEDG is the smaller challenger and looks pricier on forward earnings. Walnut is informational, not investment advice. Compare what each does, the tie-breaker metrics above, and the risks, then decide which fits your thesis and what you already own.
Which is cheaper, AES or SEDG?
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On forward P/E (as of October 2026), AES trades at 6.30x and SEDG at 38.96x, so AES is the cheaper of the two on next year's expected earnings. A lower multiple is not automatically the better buy: a richer valuation can be justified by faster growth, and a lower one can reflect real risk. Weigh the multiple against how fast each business is compounding.
Should you own both AES and SEDG?
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Because they share themes, owning both concentrates you in that theme. That can be intentional (a focused bet) or accidental (less diversification than it looks). Walnut can show your combined exposure across both, and whether adding either over-concentrates you, before you buy.
What are the risks of AES vs SEDG?
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AES: The largest risk is deal-specific: a delay, regulatory block, or renegotiation of the $15.00 cash acquisition would remove the price support the stock currently enjoys. Several major approvals (CFIUS, Ohio state regulators and the European Commission) were in hand by October 16, 2026, but closing can still depend on other clearances across the many countries AES operates in, and the narrow spread of about 3 cents leaves holders with little cushion if anything slips. AES also carries substantial leverage, roughly $33 billion of debt against a market capitalization near $10.7 billion, which makes it sensitive to interest rates and refinancing conditions. International operations expose it to currency, political, and regulatory risk, and the ongoing coal exit and construction pipeline carry execution risk. If the deal broke, the shares could re-rate to a standalone value that may sit below the offer price; the stock traded as low as about $13.21 over the past year. SEDG: SolarEdge has been hit hard by a downcycle: bloated channel inventories, weak European residential demand, pricing pressure, and sizable losses and cash burn that prompted restructuring. Higher interest rates dampened rooftop-solar demand, and the company is exposed to policy changes like net-metering reforms and shifting incentives. Competition from Enphase and lower-cost string-inverter makers, including Chinese suppliers, pressures share and margins. Its concentration in Europe amplified the recent slump. The turnaround depends on inventory clearing, demand recovering, and margins rebuilding, none of which is guaranteed. The stock has been extremely volatile, falling sharply from prior highs on the demand and inventory shock. The stock has fallen about 35% in the three months to mid-October 2026, partly on market-wide pressure as the 10-year Treasury yield approached about 5.35% and on analyst caution about US solar demand, a reminder of how rate-sensitive the name is. GAAP losses of roughly $270 million over the trailing year mean the turnaround still has to show up below the adjusted line, and consensus for the fourth quarter of 2026 is a small adjusted loss.
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Walnut is informational, not investment advice. This page is descriptive and not a recommendation to buy or sell AES or SEDG; figures are approximate and dated (as of October 2026). Verify current data before investing.