Comprehensive Stock Comparison
Compare Eco Wave Power Global AB (publ) (WAVE) vs ReNew Energy Global plc (RNWWW) Stock
Analyze side-by-side fundamentals, valuation, growth, and profitability to decide which stock is the better buy.
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Quick Verdict
| Category | Winner | Why |
|---|---|---|
| Growth | RNWWW | 19.4% revenue growth vs WAVE's -45.1% |
| Quality / Margins | RNWWW | 9.2% net margin vs WAVE's -17.6% |
| Stability / Safety | WAVE | Lower D/E ratio (16.2% vs 5.6%) |
| Dividends | Tie | Neither pays a meaningful dividend |
| Momentum (1Y) | WAVE | -33.6% vs RNWWW's -93.4% |
| Efficiency (ROA) | RNWWW | 1.2% ROA vs WAVE's -31.5%, ROIC 4.9% vs -53.8% |
Who Each Stock Is For
Growth exposure
Long-term compounding (10Y)
Sleep-well-at-night portfolio
Defensive / Recession hedge
Business Model
What each company does and how it makes money
Eco Wave Power Global is a wave energy company that develops technology to convert ocean and sea waves into clean electricity. It makes money primarily through power purchase agreements and concession agreements for its wave energy projects, with a development pipeline of approximately 405 megawatts across multiple countries. The company's key advantage is its proprietary wave energy conversion technology and its portfolio of international agreements that provide exclusive access to prime wave energy locations.
ReNew Energy Global is a renewable energy developer and operator that builds and runs utility-scale wind and solar power projects in India. It makes money primarily by selling electricity through long-term power purchase agreements — with wind and solar generation contributing roughly 80% and 20% of revenue respectively — supplemented by engineering and maintenance services. Its competitive advantage lies in its first-mover scale in India's renewable market, a large project pipeline, and expertise in navigating the country's complex regulatory environment.
Revenue Breakdown by Segment
How each company's revenue is distributed across its business units
Segment breakdown not available.
Financial Metrics Comparison
Side-by-side fundamentals across 2 stocks. BestLagging
Financial Scorecard
RNWWW leads in 2 of 6 categories (Financial Metrics, Profitability & Efficiency). WAVE leads in 1 (Total Returns). 2 tied.
Financial Metrics (TTM)
RNWWW is the larger business by revenue, generating $129.7B annually — 771773.2x WAVE's $168,000. RNWWW is the more profitable business, keeping 9.2% of every revenue dollar as net income compared to WAVE's -17.6%.
| Metric | WAVEEco Wave Power Gl… | RNWWWReNew Energy Glob… |
|---|---|---|
| RevenueTrailing 12 months | $168,000 | $129.7B |
| EBITDAEarnings before interest/tax | -$2M | $86.9B |
| Net IncomeAfter-tax profit | -$3M | $12.0B |
| Free Cash FlowCash after capex | $0 | -$23.8B |
| Gross MarginGross profit ÷ Revenue | +75.0% | +77.9% |
| Operating MarginEBIT ÷ Revenue | -15.3% | +48.4% |
| Net MarginNet income ÷ Revenue | -17.6% | +9.2% |
| FCF MarginFCF ÷ Revenue | +6.6% | -18.4% |
| Rev. Growth (YoY)Latest quarter vs prior year | — | +37.2% |
| EPS Growth (YoY)Latest quarter vs prior year | -177.8% | +94.8% |
Valuation Metrics
| Metric | WAVEEco Wave Power Gl… | RNWWWReNew Energy Glob… |
|---|---|---|
| Market CapShares × price | $29M | — |
| Enterprise ValueMkt cap + debt − cash | $23M | — |
| Trailing P/EPrice ÷ TTM EPS | -13.49x | 0.06x |
| Forward P/EPrice ÷ next-FY EPS est. | — | — |
| PEG RatioP/E ÷ EPS growth rate | — | — |
| EV / EBITDAEnterprise value multiple | — | — |
| Price / SalesMarket cap ÷ Revenue | 173.14x | — |
| Price / BookPrice ÷ Book value/share | 3.33x | 0.00x |
| Price / FCFMarket cap ÷ FCF | 26.23x | — |
Profitability & Efficiency
RNWWW delivers a 8.4% return on equity — every $100 of shareholder capital generates $8 in annual profit, vs $-43 for WAVE. WAVE carries lower financial leverage with a 0.16x debt-to-equity ratio, signaling a more conservative balance sheet compared to RNWWW's 5.59x. On the Piotroski fundamental quality scale (0–9), RNWWW scores 4/9 vs WAVE's 3/9, reflecting mixed financial health.
| Metric | WAVEEco Wave Power Gl… | RNWWWReNew Energy Glob… |
|---|---|---|
| ROE (TTM)Return on equity | -42.8% | +8.4% |
| ROA (TTM)Return on assets | -31.5% | +1.2% |
| ROICReturn on invested capital | -53.8% | +4.9% |
| ROCEReturn on capital employed | -28.6% | +6.9% |
| Piotroski ScoreFundamental quality 0–9 | 3 | 4 |
| Debt / EquityFinancial leverage | 0.16x | 5.59x |
| Net DebtTotal debt minus cash | -$7M | $691.9B |
| Cash & Equiv.Liquid assets | $8M | $40.4B |
| Total DebtShort + long-term debt | $1M | $732.3B |
| Interest CoverageEBIT ÷ Interest expense | -38.41x | 86.76x |
Total Returns (with DRIP)
A $10,000 investment in WAVE five years ago would be worth $2,656 today (with dividends reinvested), compared to $34 for RNWWW. Over the past 12 months, WAVE leads with a -33.6% total return vs RNWWW's -93.4%. The 3-year compound annual growth rate (CAGR) favors WAVE at 11.7% vs RNWWW's -75.0% — a key indicator of consistent wealth creation.
| Metric | WAVEEco Wave Power Gl… | RNWWWReNew Energy Glob… |
|---|---|---|
| YTD ReturnYear-to-date | -17.1% | +4.3% |
| 1-Year ReturnPast 12 months | -33.6% | -93.4% |
| 3-Year ReturnCumulative with dividends | +39.3% | -98.4% |
| 5-Year ReturnCumulative with dividends | -73.4% | -99.7% |
| 10-Year ReturnCumulative with dividends | -73.4% | -99.7% |
| CAGR (3Y)Annualised 3-year return | +11.7% | -75.0% |
Risk & Volatility
RNWWW is the less volatile stock with a -0.16 beta — it tends to amplify market swings less than WAVE's 0.74 beta. A beta below 1.0 means the stock typically moves less than the S&P 500. WAVE currently trades 50.6% from its 52-week high vs RNWWW's 3.8% drawdown — a narrower gap to the peak suggests stronger recent price momentum.
| Metric | WAVEEco Wave Power Gl… | RNWWWReNew Energy Glob… |
|---|---|---|
| Beta (5Y)Sensitivity to S&P 500 | 0.74x | -0.16x |
| 52-Week HighHighest price in past year | $9.87 | $0.19 |
| 52-Week LowLowest price in past year | $4.41 | $0.00 |
| % of 52W HighCurrent price vs 52-week peak | +50.6% | +3.8% |
| RSI (14)Momentum oscillator 0–100 | 41.1 | 44.1 |
| Avg Volume (50D)Average daily shares traded | 10K | 13K |
Analyst Outlook
| Metric | WAVEEco Wave Power Gl… | RNWWWReNew Energy Glob… |
|---|---|---|
| Analyst RatingConsensus buy/hold/sell | — | — |
| Price TargetConsensus 12-month target | — | — |
| # AnalystsCovering analysts | — | — |
| Dividend YieldAnnual dividend ÷ price | — | — |
| Dividend StreakConsecutive years of raises | — | 1 |
| Dividend / ShareAnnual DPS | — | — |
| Buyback YieldShare repurchases ÷ mkt cap | +0.2% | — |
Historical Charts
Charts are rendered on first load. Hover for details.
Chart 1Total Return — 5 Years (Rebased to 100)
| Stock | Jul 21 | Feb 26 | Change |
|---|---|---|---|
| Eco Wave Power Glob… (WAVE) | 100 | 25.97 | -74.0% |
| ReNew Energy Global… (RNWWW) | 100 | 0.39 | -99.6% |
Eco Wave Power Glob… (WAVE) returned -73% over 5 years vs ReNew Energy Global… (RNWWW)'s -100%.
Chart 2Revenue Growth — 10 Years
| Stock | 2015 | 2024 | Change |
|---|---|---|---|
| Eco Wave Power Glob… (WAVE) | $21712.00 | $168000.00 | +673.8% |
| ReNew Energy Global… (RNWWW) | $6.1B | $97.1B | +1481.8% |
ReNew Energy Global plc's revenue grew from $6.1B (2015) to $97.1B (2024) — a 35.9% CAGR.
Chart 3Net Margin Trend — 10 Years
| Stock | 2015 | 2024 | Change |
|---|---|---|---|
| Eco Wave Power Glob… (WAVE) | -44.4% | -12.4% | +72.1% |
| ReNew Energy Global… (RNWWW) | 13.3% | 3.9% | -70.5% |
ReNew Energy Global plc's net margin went from 13% (2015) to 4% (2024).
Chart 4EPS Growth — 10 Years
| Stock | 2015 | 2024 | Change |
|---|---|---|---|
| Eco Wave Power Glob… (WAVE) | -0.2 | -0.37 | -85.0% |
| ReNew Energy Global… (RNWWW) | 3.42 | 10.92 | +219.3% |
ReNew Energy Global plc's EPS grew from $3.42 (2015) to $10.92 (2024) — a 14% CAGR.
Chart 5Free Cash Flow — 5 Years
Eco Wave Power Global AB (publ) generated $1M FCF in 2024 (+142% vs 2021). ReNew Energy Global plc generated $-26B FCF in 2024 (+45% vs 2021).
WAVE vs RNWWW: Frequently Asked Questions
7 questions · data-driven answers · updated daily
01Is WAVE or RNWWW a better buy right now?
ReNew Energy Global plc (RNWWW) offers the better valuation at 0.1x trailing P/E, making it the more compelling value choice. 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.
02Which is the better long-term investment — WAVE or RNWWW?
Over the past 5 years, Eco Wave Power Global AB (publ) (WAVE) delivered a total return of -73.4%, compared to -99.7% for ReNew Energy Global plc (RNWWW). A $10,000 investment in WAVE five years ago would be worth approximately $3K today (assuming dividends reinvested). Over 10 years, the gap is even starker: WAVE returned -73.4% versus RNWWW's -99.7%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.
03Which is safer — WAVE or RNWWW?
By beta (market sensitivity over 5 years), ReNew Energy Global plc (RNWWW) is the lower-risk stock at -0.16β versus Eco Wave Power Global AB (publ)'s 0.74β — meaning WAVE is approximately -571% more volatile than RNWWW relative to the S&P 500. On balance sheet safety, Eco Wave Power Global AB (publ) (WAVE) carries a lower debt/equity ratio of 16% versus 6% for ReNew Energy Global plc — giving it more financial flexibility in a downturn.
04Which has better profit margins — WAVE or RNWWW?
ReNew Energy Global plc (RNWWW) is the more profitable company, earning 3.9% net margin versus -1236.3% for Eco Wave Power Global AB (publ) — meaning it keeps 3.9% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: RNWWW leads at 53.5% versus -1391.7% for WAVE. At the gross margin level — before operating expenses — RNWWW leads at 91.1%, 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.
05Which pays a better dividend — WAVE or RNWWW?
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.
06Is WAVE or RNWWW better for a retirement portfolio?
For long-horizon retirement investors, ReNew Energy Global plc (RNWWW) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β -0.16)). Both have compounded well over 10 years (RNWWW: -99.7%, WAVE: -73.4%), 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.
07What are the main differences between WAVE and RNWWW?
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: WAVE is a small-cap quality compounder stock; RNWWW is a small-cap deep-value 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.
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