HYSR vs PLUG vs FCEL Stock Comparison

Sunhydrogen, Plug Power and Fuelcell Energy Prices as of Oct 26, 2026 Peers: Industry group
HYSR Sunhydrogen, Inc.
$0.02 0.0% 1M -33.3% 1Y
Market cap
$94.07M
P/E
–
Revenue (TTM)
$1.25K
Div. yield
–
Fuel Cells Industrials
2 wins
PLUG Plug Power Inc
$1.37 -30.8% 1M -53.6% 1Y
Market cap
$1.95B
P/E
–
Revenue (TTM)
$744.09M
Div. yield
–
Hydrogen Energy
4 wins
FCEL Fuelcell Energy Inc
$11.46 -30.5% 1M +44.2% 1Y
Market cap
$857.54M
P/E
–
Revenue (TTM)
$154.14M
Div. yield
–
Fuel Cells Industrials
3 wins

Head to Head

9 decided of 12

Plug Power leads on 4 of the 12 questions below (Plug Power 4, Fuelcell Energy 3, Sunhydrogen 2). Which ones matter depends on what you are buying for; a cheap multiple and slow growth often come together.

QuestionHYSRPLUGFCELLeader
Larger companyMarket capitalisation $94.07M $1.95B $857.54M PLUG
Cheaper on earningsLower P/E, profitable companies only -14.4x -1.2x -4.8x –
Cheaper on forward earningsLower price / next fiscal year consensus EPS — — — –
Faster revenue growthRevenue growth, trailing twelve months — +10.6% +1.1% PLUG
More profitableNet margin, trailing twelve months -522,521.9% -220.6% -115.7% FCEL
Better return on capitalReturn on invested capital — -188.4% -20.5% FCEL
Less leveragedLower net debt / EBITDA — 0.1x 4.6x PLUG
Higher dividend yieldTrailing dividend yield 0.00% 0.00% 0.00% –
Better 1-year returnPrice return, last 12 months -33.3% -53.6% +44.2% FCEL
Better 5-year returnAnnualised price return, 5 years -13.0%/yr -47.5%/yr -44.1%/yr HYSR
Less volatileAnnualised volatility, 1 year 141.9% 78.2% 131.5% PLUG
Higher overall scoreMean of the five percentile scores vs peers 44/100 23/100 37/100 HYSR

Percentile Scorecard

HYSRPLUGFCEL

Each axis is the mean percentile of its metrics against the company's industry group. 100 is the best in the group, 50 the middle.

Scores by Axis

AxisHYSRPLUGFCEL
Valuation 33 #41 of 61 0 #11 of 11 38 #38 of 61
Growth 21 #46 of 58 70 #4 of 11 30 #41 of 58
Profitability 6 #52 of 55 0 #9 of 9 33 #37 of 55
Financial Health 97 #3 of 71 20 #9 of 11 81 #14 of 71
Shareholder Returns 64 #11 of 29 – 4 #28 of 29
Overall 44 23 37
  • HYSR ranked among 71 companies in Clean Energy Equipment
  • PLUG ranked among 11 companies in Renewable Fuels
  • FCEL ranked among 71 companies in Clean Energy Equipment

Price Performance

Price return, split-adjusted, before dividends. Click a name to hide or show it.

Returns

PeriodHYSRPLUGFCELSPY
1 month 0.0%-30.8%-30.5% -0.8%
3 months 0.0%-33.5%-46.7% +3.5%
6 months 0.0%-55.5%+7.3% +7.0%
Year to date -33.3%-30.5%+56.8% +12.2%
1 year -33.3%-53.6%+44.2% +13.0%
3 years +100.0%-76.8%-63.3% +86.3%
3 years, per year +26.0%-38.6%-28.4% +23.1%
5 years -50.0%-96.0%-94.5% +68.6%
5 years, per year -13.0%-47.5%-44.1% +11.0%
10 years 0.0%-13.3%-99.1% +258.0%
10 years, per year 0.0%-1.4%-37.9% +13.6%

Risk

MeasureHYSRPLUGFCELSPY
Volatility, 1Y 141.9%78.2%131.5% 12.7%
Downside volatility, 1Y 620.4%70.0%113.4% 12.7%
Beta vs S&P 500, 1Y 1.522.253.72 1.00
Return / volatility, 1Y -0.23-0.680.34 1.02
Max drawdown, 5Y -88.9%-98.4%-98.9% -25.4%
From 52-week high -50.0%-66.9%-68.2% -1.8%
52-week high $0.04$4.14$36.01 $779.14
52-week low $0.02$1.37$6.00 $631.97

Valuation History

Weekly multiples on trailing twelve-month fundamentals. Negative or extreme readings (a loss year, a collapsed denominator) are left out so the chart stays readable.

MultipleHYSRPLUGFCEL
P/E now vs peer median -16.9xmedian 25.4x -1.2xmedian 10.9x -4.5xmedian 25.4x
P/S now vs peer median 91,987xmedian 2.1x 2.6xmedian 1.2x 5.9xmedian 2.1x
EV/EBITDA now vs peer median -11.0xmedian 17.5x -1.4xmedian 14.0x -2.0xmedian 17.5x
P/FCF now vs peer median -22.7xmedian 27.3x -3.4xmedian 14.0x -9.1xmedian 27.3x
P/B now vs peer median 3.6xmedian 1.7x 3.3xmedian 1.2x 0.9xmedian 1.7x
PEG now vs peer median 0.17median 0.77 -0.21median 0.19 0.04median 0.77

Financial History

Reported figures by fiscal period, placed on the calendar year (or quarter) each period ended in, so companies with different fiscal years line up.

Trailing twelve monthsHYSRPLUGFCEL
Revenue $1.25K $744.09M $154.14M
Gross profit – -$138.00M -$49.92M
Operating income -$7.52M -$1.29B -$179.19M
Net income -$6.53M -$1.71B -$178.30M
Free cash flow -$5.07M -$560.50M -$101.12M
R&D $4.33M $53.94M $28.64M
EPS (diluted) $0.00 $-1.18 $-2.53
Cash & equivalents $12.13M $161.90M $658.10M
Total debt – $314.00K $18.80M
Shares (diluted) 5.53B 1.39B 70.41M
Enterprise value -$40.56M $1.04B -$763.66M

All Metrics

58 metrics · best in bold

Bold marks the best reading: the lowest positive value for multiples, leverage and payout, the highest for everything else. The bar under each value is its percentile against that company's own peers. Hover a value for its rank and the peer median.

Valuation

12 metrics
MetricHYSRPLUGFCEL
P/E -16.9x -1.2x -4.5x
P/FCF -22.7x -3.4x -9.1x
P/Operating cash flow -22.7x -4.0x -9.5x
P/S 91,987x 2.6x 5.9x
P/B 3.6x 3.3x 0.9x
P/Tangible book 3.6x 3.4x 0.9x
EV/EBITDA -11.0x -1.4x -2.0x
EV/EBIT -11.0x -1.4x -1.5x
EV/Revenue 66,339x 2.4x 1.8x
EV/FCF -16.4x -3.1x -2.7x
EV/Operating cash flow -16.4x -3.6x -2.9x
PEG (3Y EPS CAGR) 0.17 -0.21 0.04

Growth

14 metrics
MetricHYSRPLUGFCEL
Revenue growth (1Y) – 10.6% 1.1%
Revenue CAGR (3Y) – -5.4% 3.2%
Gross profit growth (1Y) – 70.1% -62.6%
Gross profit CAGR (3Y) – 20.4% -27.2%
Operating income growth (1Y) -29.3% 31.3% 12.6%
Operating income CAGR (3Y) 6.7% -15.4% -8.0%
Net income growth (1Y) 20.6% 13.3% 11.6%
Net income CAGR (3Y) -105.7% -26.9% -13.9%
EPS growth (1Y) 23.7% 32.5% 69.5%
EPS CAGR (3Y) -98.1% 5.5% -104.7%
Operating cash flow growth (1Y) -38.9% 20.0% 0.3%
Operating cash flow CAGR (3Y) -5.9% 22.8% 13.4%
Free cash flow growth (1Y) -38.9% 31.6% 18.9%
Free cash flow CAGR (3Y) -5.6% 30.6% 17.8%

Profitability

14 metrics
MetricHYSRPLUGFCEL
Gross margin – -18.5% -32.4%
EBITDA margin -600,651% -168.2% -89.9%
Operating margin -601,652% -172.8% -116.3%
Pretax margin -502,370% -229.0% -115.7%
Net margin -522,522% -220.6% -115.7%
FCF margin -405,229% -75.3% -65.6%
Operating cash flow margin -405,229% -64.9% -62.5%
Return on equity -19.4% -251.3% -20.8%
Return on assets -18.8% -75.0% -15.4%
Return on invested capital – -188.4% -20.5%
Return on capital employed -23.1% -72.0% -16.9%
Asset turnover 0.0x 0.3x 0.1x
Cash conversion (OCF / net income) 0.8x 0.3x 0.5x
Stock comp / revenue 93,359% 7.2% 6.4%

Financial Health

11 metrics
MetricHYSRPLUGFCEL
Debt / assets – 0.0% 1.4%
Debt / equity – 0.0x 0.0x
Net debt / EBITDA – 0.1x 4.6x
Debt / FCF – 0.0x -0.2x
Liabilities / assets 3.6% 73.2% 25.0%
Equity / assets 96.4% 26.8% 75.0%
Interest coverage – -17.9x -16.0x
Current ratio 37.9x 2.3x 8.7x
Quick ratio 37.6x 0.8x 7.3x
Cash ratio 37.2x 0.3x 6.8x
Altman Z-score 54.19 -6.08 -0.09

Shareholder Returns

7 metrics
MetricHYSRPLUGFCEL
Dividend yield – – –
Net buyback yield -0.1% -2.5% -64.1%
Shareholder yield -0.1% -2.5% -64.1%
Payout ratio (earnings) – – –
Payout ratio (FCF) – – –
Dividend growth (1Y) – – –
Dividend CAGR (3Y) – – –

Analyst Estimates

Solid lines are reported fiscal-year results; dashed lines are the consensus for the years ahead. Hover a year for the analysts' high and low, and how each result compared with its estimate.

ConsensusHYSRPLUGFCEL
EPS, next fiscal year – $-0.41FY2026 $-2.70FY2026
Revenue, next fiscal year – $799.33MFY2026 $153.46MFY2026
Revenue growth, next FY – +12.6%FY2026 -3.0%FY2026
Revenue growth, the year after – +28.0% +71.6%

Institutional Ownership

13F filings, quarter ended Jun 30, 2026
HoldersHYSRPLUGFCEL
Held by institutions – 58.3% 65.0%
Institutions holding – 508 226
Change in shares held, QoQ – +8.0% +67.3%
Institutions buying – 276 161
Institutions selling – 105 38
Buyers to sellers – 2.63 4.24

Return Correlation

Daily returns, last 12 months

1.00 means two stocks move in lockstep, 0 that they move independently. Pairs below about 0.5 diversify each other.

HYSRPLUGFCEL
HYSR 1.00 -0.10 0.00
PLUG -0.10 1.00 0.57
FCEL 0.00 0.57 1.00

Add a Peer

Largest companies in the same industry

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Frequently Asked Questions

Which is bigger, HYSR, PLUG and FCEL?

Plug Power (PLUG) is the largest by market capitalisation: Sunhydrogen (HYSR) $94.07M, Plug Power (PLUG) $1.95B, Fuelcell Energy (FCEL) $857.54M.

Which company is growing faster?

Plug Power (PLUG) grew revenue fastest over the trailing twelve months: Plug Power (PLUG) +10.6%, Fuelcell Energy (FCEL) +1.1%.

Which company is more profitable?

Fuelcell Energy (FCEL) has the highest net margin (Sunhydrogen (HYSR) -522,521.9%, Plug Power (PLUG) -220.6%, Fuelcell Energy (FCEL) -115.7%). On return on invested capital, Fuelcell Energy (FCEL) leads (Plug Power (PLUG) -188.4%, Fuelcell Energy (FCEL) -20.5%).

Which stock has performed better?

Over the past year Fuelcell Energy (FCEL) returned the most: Sunhydrogen (HYSR) -33.3%, Plug Power (PLUG) -53.6%, Fuelcell Energy (FCEL) +44.2%. Over five years, Sunhydrogen (HYSR) compounded fastest (Sunhydrogen (HYSR) -13.0%/yr, Plug Power (PLUG) -47.5%/yr, Fuelcell Energy (FCEL) -44.1%/yr). Returns are price only, before dividends.

Which stock is riskier?

By one-year price volatility, Plug Power (PLUG) has been the steadiest (Sunhydrogen (HYSR) 141.9%, Plug Power (PLUG) 78.2%, Fuelcell Energy (FCEL) 131.5%). Volatility measures how widely the price swings, not the risk of the business.

Which is the better stock, HYSR, PLUG and FCEL?

There is no single answer; it depends on what you are buying for. On the 12 head-to-head measures on this page, Plug Power (PLUG) leads on 4. Business Quant does not give investment advice; use the comparison as a starting point for your own research.

Data from SEC filings, exchange prices and consensus estimates, via Business Quant. Percentile scores compare each company with its own peer group, so two companies' scores are each relative to different peers unless you rank against the whole market. Price returns exclude dividends. Nothing on this page is investment advice.