ELLO vs SEDG vs ENPH vs FSLR vs CSIQ

For growth investors, SolarEdge Technologies, Inc.

(SEDG) is the stronger pick with 31. 4% revenue growth year-over-year, versus -17. 1% for Ellomay Capital Ltd. (ELLO). First Solar, Inc. (FSLR) offers the better valuation at 15. 1x trailing P/E (12. 0x forward), making it the more compelling value choice. Analysts rate First Solar, Inc. (FSLR) a "Buy" — based on 73 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, First Solar, Inc.

(FSLR) is the cheapest at 15. 1x versus Enphase Energy, Inc. at 27. 5x. On forward P/E, First Solar, Inc. is actually cheaper at 12. 0x. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: First Solar, Inc. wins at 0. 39x versus Enphase Energy, Inc. 's 2. 79x — a PEG below 1. 0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, First Solar, Inc.

(FSLR) delivered a total return of +187. 6%, compared to -82. 5% for SolarEdge Technologies, Inc. (SEDG). Over 10 years, the gap is even starker: ENPH returned +1738% versus CSIQ's +14. 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), Ellomay Capital Ltd.

(ELLO) is the lower-risk stock at 0. 53β versus Canadian Solar Inc. 's 2. 23β — meaning CSIQ is approximately 320% more volatile than ELLO relative to the S&P 500. On balance sheet safety, First Solar, Inc. (FSLR) carries a lower debt/equity ratio of 5% versus 4% for Ellomay Capital Ltd. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), SolarEdge Technologies, Inc.

(SEDG) is pulling ahead at 31. 4% versus -17. 1% for Ellomay Capital Ltd. (ELLO). On earnings-per-share growth, the picture is similar: SolarEdge Technologies, Inc. grew EPS 78. 2% year-over-year, compared to -400. 0% for Ellomay Capital Ltd.. Over a 3-year CAGR, FSLR leads at 25. 8% 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.

First Solar, Inc.

(FSLR) is the more profitable company, earning 29. 3% net margin versus -34. 2% for SolarEdge Technologies, Inc. — meaning it keeps 29. 3% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: FSLR leads at 32. 3% versus -24. 1% for SEDG. At the gross margin level — before operating expenses — ENPH leads at 46. 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, First Solar, Inc. (FSLR) is the more undervalued stock at a PEG of 0. 39x versus Enphase Energy, Inc. 's 2. 79x. A PEG below 1. 0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, First Solar, Inc. (FSLR) trades at 12. 0x forward P/E versus 610. 9x for SolarEdge Technologies, Inc. — 598. 9x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for CSIQ: 63. 3% to $28. 88.

None of the stocks in this comparison currently pay a material dividend.

All are effectively zero-yield and should be held for capital appreciation rather than income.

For long-horizon retirement investors, Ellomay Capital Ltd.

(ELLO) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0. 53), +197. 6% 10Y return). Canadian Solar Inc. (CSIQ) carries a higher beta of 2. 23 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (ELLO: +197. 6%, CSIQ: +14. 4%), 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.

These companies operate in different sectors (ELLO (Utilities) and SEDG (Energy) and ENPH (Energy) and FSLR (Energy) and CSIQ (Energy)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: ELLO is a small-cap quality compounder stock; SEDG is a small-cap high-growth stock; ENPH is a small-cap quality compounder stock; FSLR is a mid-cap high-growth stock; CSIQ is a small-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.