WAVE vs AMRC vs PESI vs ARRY

For growth investors, Array Technologies, Inc.

(ARRY) is the stronger pick with 40. 2% revenue growth year-over-year, versus -77. 3% for Eco Wave Power Global AB (publ) (WAVE). Ameresco, Inc. (AMRC) offers the better valuation at 35. 8x trailing P/E (25. 0x forward), making it the more compelling value choice. Analysts rate Ameresco, Inc. (AMRC) a "Buy" — based on 23 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 forward P/E, Array Technologies, Inc.

is actually cheaper at 11. 7x — notably different from the trailing picture, reflecting expected earnings growth.

Over the past 5 years, Perma-Fix Environmental Services, Inc.

(PESI) delivered a total return of +45. 6%, compared to -67. 7% for Array Technologies, Inc. (ARRY). Over 10 years, the gap is even starker: AMRC returned +542. 4% versus ARRY's -77. 5%. 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), Eco Wave Power Global AB (publ) (WAVE) is the lower-risk stock at 1.

25β versus Array Technologies, Inc. 's 2. 32β — meaning ARRY is approximately 86% more volatile than WAVE relative to the S&P 500. On balance sheet safety, Perma-Fix Environmental Services, Inc. (PESI) carries a lower debt/equity ratio of 9% versus 3% for Array Technologies, Inc. — giving it more financial flexibility in a downturn.

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

(ARRY) is pulling ahead at 40. 2% versus -77. 3% for Eco Wave Power Global AB (publ) (WAVE). On earnings-per-share growth, the picture is similar: Array Technologies, Inc. grew EPS 62. 6% year-over-year, compared to -73. 0% for Eco Wave Power Global AB (publ). Over a 3-year CAGR, WAVE leads at 13. 7% 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.

Ameresco, Inc.

(AMRC) is the more profitable company, earning 2. 3% net margin versus -97. 3% for Eco Wave Power Global AB (publ) — meaning it keeps 2. 3% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ARRY leads at 6. 6% versus -84. 2% for WAVE. At the gross margin level — before operating expenses — ARRY leads at 21. 2%, 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.

On forward earnings alone, Array Technologies, Inc.

(ARRY) trades at 11. 7x forward P/E versus 25. 0x for Ameresco, Inc. — 13. 3x cheaper on a one-year earnings basis. Analyst consensus price targets imply the most upside for PESI: 61. 1% to $18. 00.

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, Eco Wave Power Global AB (publ) (WAVE) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 1.

25)). Array Technologies, Inc. (ARRY) carries a higher beta of 2. 32 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (WAVE: -56. 3%, ARRY: -77. 5%), 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 (WAVE (Utilities) and AMRC (Industrials) and PESI (Industrials) and ARRY (Energy)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: WAVE is a small-cap quality compounder stock; AMRC is a small-cap quality compounder stock; PESI is a small-cap quality compounder stock; ARRY is a small-cap high-growth 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.