PLUG vs. FCEL

Last updated Apr 1, 2026

Compare and contrast key facts about Plug Power Inc. (PLUG) and FuelCell Energy, Inc. (FCEL).

Performance

PLUG vs. FCEL - Performance Comparison

The chart below illustrates the hypothetical performance of a $10,000 investment in Plug Power Inc. (PLUG) and FuelCell Energy, Inc. (FCEL). The values are adjusted to include any dividend payments, if applicable.

PLUG vs. FCEL - Yearly Performance Comparison

	2026 (YTD)	2025	2024	2023	2022	2021	2020	2019	2018	2017
PLUG Plug Power Inc.	14.72%	-7.51%	-52.67%	-63.62%	-56.18%	-16.75%	973.10%	154.84%	-47.46%	96.67%
FCEL FuelCell Energy, Inc.	-10.67%	-19.14%	-81.17%	-42.45%	-46.54%	-53.45%	345.02%	-62.00%	-67.62%	-2.86%

Fundamentals

EPS PLUG : -$1.03 FCEL : -$5.61
PS Ratio PLUG : 2.42 FCEL : 1.26
Total Revenue (TTM) PLUG : $709.92M FCEL : $169.70M
Gross Profit (TTM) PLUG : $708.24M FCEL : -$27.06M
EBITDA (TTM) PLUG : -$706.05M FCEL : -$146.91M

Returns By Period

In the year-to-date period, PLUG achieves a 14.72% return, which is significantly higher than FCEL's -10.67% return. Over the past 10 years, PLUG has outperformed FCEL with an annualized return of 1.03%, while FCEL has yielded a comparatively lower -44.52% annualized return.

PLUG

• 1D: 5.61%
• 1M: 26.26%
• YTD: 14.72%
• 6M: -3.00%
• 1Y: 67.41%
• 3Y*: -42.23%
• 5Y*: -42.27%
• 10Y*: 1.03%

FCEL

• 1D: 4.82%
• 1M: -19.78%
• YTD: -10.67%
• 6M: -16.28%
• 1Y: 42.27%
• 3Y*: -57.57%
• 5Y*: -56.73%
• 10Y*: -44.52%

*Multi-year figures are annualized to reflect compound growth (CAGR)

Return for Risk

PLUG vs. FCEL — Risk / Return Rank

Compare risk-adjusted metric ranks to identify better-performing investments over the past 12 months.

PLUG

PLUG Risk / Return Rank: 67
PLUG Sharpe Ratio Rank: 64
PLUG Sortino Ratio Rank: 76
PLUG Omega Ratio Rank: 67
PLUG Calmar Ratio Rank: 68
PLUG Martin Ratio Rank: 61

FCEL

FCEL Risk / Return Rank: 61
FCEL Sharpe Ratio Rank: 57
FCEL Sortino Ratio Rank: 67
FCEL Omega Ratio Rank: 61
FCEL Calmar Ratio Rank: 61
FCEL Martin Ratio Rank: 57

The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

PLUG vs. FCEL - Risk-Adjusted Trends Comparison

This table presents a comparison of risk-adjusted performance metrics for Plug Power Inc. (PLUG) and FuelCell Energy, Inc. (FCEL). Risk-adjusted metrics are performance indicators that assess an investment's returns in relation to its risk, enabling a more accurate comparison of different investment options.

	PLUG	FCEL	Difference
Sharpe ratio Return per unit of total volatility	0.59	0.41	+0.18
Sortino ratio Return per unit of downside risk	1.85	1.43	+0.42
Omega ratio Gain probability vs. loss probability	1.19	1.16	+0.04
Calmar ratio Return relative to maximum drawdown	1.21	0.82	+0.39
Martin ratio Return relative to average drawdown	1.97	1.35	+0.63
Data is calculated on a 1-year rolling basis and updated daily. The trend shows the change in the indicator over the past month.

PLUG vs. FCEL - Sharpe Ratio Comparison

The current PLUG Sharpe Ratio is 0.59, which is higher than the FCEL Sharpe Ratio of 0.41. The chart below compares the historical Sharpe Ratios of PLUG and FCEL, offering insights into how both investments have performed under varying market conditions. These values are calculated using daily returns over the previous 12 months.

Sharpe Ratios by Period

	PLUG	FCEL	Difference
Sharpe Ratio (1Y) Calculated over the trailing 1-year period	0.59	0.41	+0.18
Sharpe Ratio (5Y) Calculated over the trailing 5-year period	-0.45	-0.61	+0.16
Sharpe Ratio (10Y) Calculated over the trailing 10-year period	0.01	-0.37	+0.38
Sharpe Ratio (All Time) Calculated using the full available price history	-0.15	-0.23	+0.08

Correlation

The correlation between PLUG and FCEL is 0.47, which is considered to be moderate. This suggests that the two assets have some degree of positive relationship in their price movements. Moderate correlation can be acceptable for portfolio diversification, offering a balance between risk and potential returns.

Dividends

PLUG vs. FCEL - Dividend Comparison

Neither PLUG nor FCEL has paid dividends to shareholders.

Tickers have no history of dividend payments

Drawdowns

PLUG vs. FCEL - Drawdown Comparison

The maximum PLUG drawdown since its inception was -99.99%, roughly equal to the maximum FCEL drawdown of -100.00%. Use the drawdown chart below to compare losses from any high point for PLUG and FCEL.

Drawdown Indicators

	PLUG	FCEL	Difference
Max Drawdown Largest peak-to-trough decline	-99.99%	-100.00%	+0.01%
Max Drawdown (1Y) Largest decline over 1 year	-56.66%	-47.52%	-9.14%
Max Drawdown (5Y) Largest decline over 5 years	-98.43%	-99.13%	+0.70%
Max Drawdown (10Y) Largest decline over 10 years	-99.04%	-99.88%	+0.84%
Current Drawdown Current decline from peak	-99.85%	-100.00%	+0.15%
Average Drawdown Average peak-to-trough decline	-96.20%	-83.74%	-12.46%
Ulcer Index Depth and duration of drawdowns from previous peaks	34.79%	28.94%	+5.85%

Volatility

PLUG vs. FCEL - Volatility Comparison

Plug Power Inc. (PLUG) has a higher volatility of 29.77% compared to FuelCell Energy, Inc. (FCEL) at 18.59%. This indicates that PLUG's price experiences larger fluctuations and is considered to be riskier than FCEL based on this measure. The chart below showcases a comparison of their rolling one-month volatility.

Volatility by Period

	PLUG	FCEL	Difference
Volatility (1M) Calculated over the trailing 1-month period	29.77%	18.59%	+11.18%
Volatility (6M) Calculated over the trailing 6-month period	72.75%	72.55%	+0.20%
Volatility (1Y) Calculated over the trailing 1-year period	115.40%	104.39%	+11.01%
Volatility (5Y) Calculated over the trailing 5-year period, annualized	94.13%	92.67%	+1.46%
Volatility (10Y) Calculated over the trailing 10-year period, annualized	88.56%	120.57%	-32.01%

Financials