Which has grown faster, CLNE or IMPP?

Over the past five years, IMPP grew revenue faster — CLNE at a 14.63% CAGR versus IMPP at 63.65%.

Is CLNE or IMPP more profitable?

IMPP runs the higher net margin — CLNE at -21.27% versus IMPP at 36.75%.

Clean Energy Fuels Corp. (CLNE) vs Imperial Petroleum Inc. (IMPP)

A side-by-side comparison of Clean Energy Fuels Corp. and Imperial Petroleum Inc. across valuation, profitability, dividends, and growth — built entirely from reported fundamentals, as of October 6, 2026. Differences are shown without an overall score or investment verdict.

CLNE

Clean Energy Fuels Corp.

$344M

$1.56EnergyDelayed quote: Oct 5, 2026, 4:00 PM EDT

IMPP

Imperial Petroleum Inc.

$198M

$5.27EnergyDelayed quote: Oct 5, 2026, 4:00 PM EDT

Total return — CLNE vs IMPP

growth of $100 · dividends reinvested · last 5y

CLNE -78.2% (-26.3%/yr)IMPP -95.3% (-45.8%/yr)CLNE compounded faster over this window

CLNE IMPP

CLNE vs IMPP: by the numbers

•CLNE is the larger company ($344M vs $198M market cap).
•IMPP is profitable (36.75% net margin) while CLNE runs a net loss (-21.27%).
•IMPP grew revenue faster over the past five years (63.65% vs 14.63% CAGR).

Metrics side by side

Valuation

Metric	CLNE	IMPP
P/E ratio	N/A	2.76
Forward P/E	N/A	1.78
P/S ratio	0.78	0.82
P/B ratio	0.62	0.34
EV / EBITDA	38.66	1.66
FCF yield	6.65%	58.50%

Profitability

Metric	CLNE	IMPP
Gross margin	4.21%	28.70%
Operating margin	-22.01%	24.78%
Net margin	-21.27%	36.75%
ROE	-17.00%	15.12%
ROIC	-3.62%	14.20%

Growth (annualized)

Metric	CLNE	IMPP
Revenue CAGR (5Y)	14.63%	63.65%
FCF CAGR (5Y)	-11.70%	79.56%
Total return CAGR (5Y)	-28.03%	N/A

Frequently asked

Which has grown faster, CLNE or IMPP?: Over the past five years, IMPP grew revenue faster — CLNE at a 14.63% CAGR versus IMPP at 63.65%.
Is CLNE or IMPP more profitable?: IMPP runs the higher net margin — CLNE at -21.27% versus IMPP at 36.75%.

Go deeper

Full CLNE analysis Full IMPP analysis Interactive comparison tool

Dig into the metrics

Imperial Petroleum P/E ratio Clean Energy Fuels ROE Imperial Petroleum ROE Clean Energy Fuels operating margin Imperial Petroleum operating margin Clean Energy Fuels revenue growth Imperial Petroleum revenue growth Clean Energy Fuels free cash flow Imperial Petroleum free cash flow

Clean Energy Fuels & Imperial Petroleum appear in these rankings

Fastest Revenue Growth Stocks Highest FCF Yield Stocks Lowest P/E Ratio Stocks

Figures are sourced from reported fundamentals and the latest end-of-day price. This comparison is informational only and is not investment advice. Past performance does not predict future results. See our methodology. Compiled by TGMCharts Research · data verified October 6, 2026.