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Side-by-side financial comparison of Clean Energy Fuels Corp. (CLNE) and RING ENERGY, INC. (REI). Click either name above to swap in a different company.

Clean Energy Fuels Corp. is the larger business by last-quarter revenue ($117.6M vs $66.9M, roughly 1.8× RING ENERGY, INC.). On growth, Clean Energy Fuels Corp. posted the faster year-over-year revenue change (0.0% vs -19.8%). Over the past eight quarters, Clean Energy Fuels Corp.'s revenue compounded faster (9.5% CAGR vs -15.9%).

Bloom Energy is an American public company that designs and manufactures solid oxide fuel cells (SOFCs) which independently produce electricity onsite for power generation in data centers, manufacturing, and other commercial sectors. Founded in 2001 and headquartered in San Jose, California; its fuel cell technology generates electricity through a chemical conversion process, which differs from most other power sources reliant on combustion, and can use natural gas, biogas or hydrogen as fuel...

Siemens Energy AG is a German publicly traded energy corporation formed through the spin-off of the former Gas and Power division of Siemens, and it includes full ownership of Siemens Gamesa.

CLNE vs REI — Head-to-Head

Bigger by revenue
CLNE
CLNE
1.8× larger
CLNE
$117.6M
$66.9M
REI
Growing faster (revenue YoY)
CLNE
CLNE
+19.9% gap
CLNE
0.0%
-19.8%
REI
Faster 2-yr revenue CAGR
CLNE
CLNE
Annualised
CLNE
9.5%
-15.9%
REI

Income Statement — Q1 FY2026 vs Q4 FY2025

Metric
CLNE
CLNE
REI
REI
Revenue
$117.6M
$66.9M
Net Profit
$-12.4M
Gross Margin
Operating Margin
-2.5%
-37.6%
Net Margin
-10.6%
Revenue YoY
0.0%
-19.8%
Net Profit YoY
EPS (diluted)
$-0.07

Green = leading value per metric. Periods may differ when fiscal calendars don't align.

8-Quarter Revenue & Profit Trend

Side-by-side quarterly history. Quarters aligned by calendar period so offset fiscal years line up.

Revenue
CLNE
CLNE
REI
REI
Q1 26
$117.6M
Q4 25
$112.3M
$66.9M
Q3 25
$106.1M
$78.6M
Q2 25
$102.6M
$82.6M
Q1 25
$103.8M
$79.1M
Q4 24
$109.3M
$83.4M
Q3 24
$104.9M
$89.2M
Q2 24
$98.0M
$99.1M
Net Profit
CLNE
CLNE
REI
REI
Q1 26
$-12.4M
Q4 25
$-43.0M
Q3 25
$-23.8M
$-51.6M
Q2 25
$-20.2M
$20.6M
Q1 25
$-135.0M
$9.1M
Q4 24
$-30.2M
Q3 24
$-18.2M
$33.9M
Q2 24
$-16.3M
$22.4M
Operating Margin
CLNE
CLNE
REI
REI
Q1 26
-2.5%
Q4 25
-9.5%
-37.6%
Q3 25
-12.8%
-70.0%
Q2 25
-9.0%
28.4%
Q1 25
-121.7%
28.3%
Q4 24
-11.8%
28.3%
Q3 24
-8.1%
33.4%
Q2 24
-5.7%
42.2%
Net Margin
CLNE
CLNE
REI
REI
Q1 26
-10.6%
Q4 25
-38.3%
Q3 25
-22.4%
-65.7%
Q2 25
-19.7%
25.0%
Q1 25
-130.1%
11.5%
Q4 24
-27.6%
Q3 24
-17.3%
38.0%
Q2 24
-16.6%
22.6%
EPS (diluted)
CLNE
CLNE
REI
REI
Q1 26
Q4 25
$-0.21
$-0.07
Q3 25
$-0.11
$-0.25
Q2 25
$-0.09
$0.10
Q1 25
$-0.60
$0.05
Q4 24
$-0.14
$0.03
Q3 24
$-0.08
$0.17
Q2 24
$-0.07
$0.11

Balance Sheet & Financial Strength

Snapshot of each company's liquidity, leverage and book value from the latest quarter.

Metric
CLNE
CLNE
REI
REI
Cash + ST InvestmentsLiquidity on hand
$70.8M
$902.9K
Total DebtLower is stronger
$54.0K
Stockholders' EquityBook value
$563.7M
$836.3M
Total Assets
$1.0B
$1.4B
Debt / EquityLower = less leverage
0.00×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
CLNE
CLNE
REI
REI
Q1 26
$70.8M
Q4 25
$156.1M
$902.9K
Q3 25
$232.2M
$286.9K
Q2 25
$240.8M
Q1 25
$226.6M
$1.1M
Q4 24
$217.5M
$1.9M
Q3 24
$243.5M
Q2 24
$249.3M
$1.2M
Total Debt
CLNE
CLNE
REI
REI
Q1 26
$54.0K
Q4 25
$226.8M
Q3 25
$284.3M
Q2 25
$277.9M
Q1 25
$271.6M
Q4 24
$265.4M
Q3 24
$264.1M
Q2 24
$263.0M
Stockholders' Equity
CLNE
CLNE
REI
REI
Q1 26
$563.7M
Q4 25
$559.4M
$836.3M
Q3 25
$585.2M
$847.7M
Q2 25
$590.8M
$897.9M
Q1 25
$596.7M
$876.0M
Q4 24
$713.3M
$858.6M
Q3 24
$724.8M
$851.3M
Q2 24
$723.0M
$817.4M
Total Assets
CLNE
CLNE
REI
REI
Q1 26
$1.0B
Q4 25
$1.1B
$1.4B
Q3 25
$1.1B
$1.4B
Q2 25
$1.1B
$1.5B
Q1 25
$1.1B
$1.5B
Q4 24
$1.2B
$1.4B
Q3 24
$1.2B
$1.4B
Q2 24
$1.2B
$1.4B
Debt / Equity
CLNE
CLNE
REI
REI
Q1 26
0.00×
Q4 25
0.41×
Q3 25
0.49×
Q2 25
0.47×
Q1 25
0.46×
Q4 24
0.37×
Q3 24
0.36×
Q2 24
0.36×

Cash Flow & Capital Efficiency

How much cash each business actually produces after reinvestment. Cash flow is harder to manipulate than net income.

Metric
CLNE
CLNE
REI
REI
Operating Cash FlowLast quarter
$44.7M
Free Cash FlowOCF − Capex
FCF MarginFCF / Revenue
Capex IntensityCapex / Revenue
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
CLNE
CLNE
REI
REI
Q1 26
Q4 25
$13.1M
$44.7M
Q3 25
$13.1M
$44.5M
Q2 25
$35.9M
$33.3M
Q1 25
$23.4M
$28.4M
Q4 24
$21.9M
$47.3M
Q3 24
$21.4M
$51.3M
Q2 24
$18.8M
$50.6M
Free Cash Flow
CLNE
CLNE
REI
REI
Q1 26
Q4 25
$6.5M
Q3 25
$6.5M
Q2 25
$30.9M
Q1 25
$15.9M
Q4 24
$10.3M
Q3 24
$42.0K
Q2 24
$4.8M
FCF Margin
CLNE
CLNE
REI
REI
Q1 26
Q4 25
5.8%
Q3 25
6.1%
Q2 25
30.2%
Q1 25
15.4%
Q4 24
9.5%
Q3 24
0.0%
Q2 24
4.9%
Capex Intensity
CLNE
CLNE
REI
REI
Q1 26
Q4 25
5.9%
Q3 25
6.2%
Q2 25
4.8%
Q1 25
7.2%
Q4 24
10.5%
Q3 24
20.3%
Q2 24
14.2%
Cash Conversion
CLNE
CLNE
REI
REI
Q1 26
Q4 25
Q3 25
Q2 25
1.61×
Q1 25
3.11×
Q4 24
Q3 24
1.52×
Q2 24
2.26×

Financial Flow Comparison

Revenue → gross profit → operating profit → net profit for each company.

Revenue Breakdown by Segment

CLNE
CLNE

Product revenue$102.9M88%
Service revenue$14.7M12%

REI
REI

Segment breakdown not available.

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