ENGS vs NRGV vs GREE vs SPRU vs RUN

For growth investors, Energy Vault Holdings, Inc.

(NRGV) is the stronger pick with 340. 9% revenue growth year-over-year, versus -15. 4% for Greenidge Generation Holdings Inc. (GREE). Sunrun Inc. (RUN) offers the better valuation at 8. 1x trailing P/E (22. 8x forward), making it the more compelling value choice. Analysts rate Energy Vault Holdings, Inc. (NRGV) a "Buy" — based on 7 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.

Over the past 5 years, Energy Vault Holdings, Inc.

(NRGV) delivered a total return of -57. 7%, compared to -99. 2% for Greenidge Generation Holdings Inc. (GREE). Over 10 years, the gap is even starker: RUN returned +86. 7% versus SPRU's -95. 6%. 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), Spruce Power Holding Corporation (SPRU) is the lower-risk stock at 0.

33β versus Greenidge Generation Holdings Inc. 's 3. 33β — meaning GREE is approximately 915% more volatile than SPRU relative to the S&P 500. On balance sheet safety, Energy Vault Holdings, Inc. (NRGV) carries a lower debt/equity ratio of 107% versus 5% for Spruce Power Holding Corporation — giving it more financial flexibility in a downturn.

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

(NRGV) is pulling ahead at 340. 9% versus -15. 4% for Greenidge Generation Holdings Inc. (GREE). On earnings-per-share growth, the picture is similar: Sunrun Inc. grew EPS 113. 3% year-over-year, compared to -6. 7% for Spruce Power Holding Corporation. Over a 3-year CAGR, SPRU leads at 73. 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.

Sunrun Inc.

(RUN) is the more profitable company, earning 15. 2% net margin versus -85. 9% for Spruce Power Holding Corporation — meaning it keeps 15. 2% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: ENGS leads at -2. 4% versus -61. 4% for SPRU. At the gross margin level — before operating expenses — GREE leads at 79. 7%, 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.

Analyst consensus price targets imply the most upside for RUN: 31.

4% to $18. 14.

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, Spruce Power Holding Corporation (SPRU) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.

33)). Greenidge Generation Holdings Inc. (GREE) carries a higher beta of 3. 33 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (SPRU: -95. 6%, GREE: -62. 9%), 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 (ENGS (Industrials) and NRGV (Utilities) and GREE (Financial Services) and SPRU (Energy) and RUN (Energy)), which means they face different economic cycles, regulatory environments, and macro sensitivities — making direct comparison nuanced.

In terms of investment character: ENGS is a small-cap high-growth stock; NRGV is a small-cap high-growth stock; GREE is a small-cap quality compounder stock; SPRU is a small-cap quality compounder stock; RUN 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.