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Side-by-side financial comparison of Clean Energy Fuels Corp. (CLNE) and Mayville Engineering Company, Inc. (MEC). Click either name above to swap in a different company.

Mayville Engineering Company, Inc. is the larger business by last-quarter revenue ($134.3M vs $112.3M, roughly 1.2× Clean Energy Fuels Corp.). Mayville Engineering Company, Inc. runs the higher net margin — -3.2% vs -38.3%, a 35.0% gap on every dollar of revenue. On growth, Mayville Engineering Company, Inc. posted the faster year-over-year revenue change (10.7% vs 2.7%). Mayville Engineering Company, Inc. produced more free cash flow last quarter ($10.2M vs $6.5M). Over the past eight quarters, Clean Energy Fuels Corp.'s revenue compounded faster (4.1% CAGR vs -8.8%).

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...

Mayville Engineering Company, Inc. is a U.S.-headquartered leading manufacturer of metal components, fabricated assemblies, and custom engineered solutions. It serves OEM clients across agriculture, construction, transportation, defense, and power sports markets, offering end-to-end services from prototyping to high-volume production for North America.

CLNE vs MEC — Head-to-Head

Bigger by revenue
MEC
MEC
1.2× larger
MEC
$134.3M
$112.3M
CLNE
Growing faster (revenue YoY)
MEC
MEC
+7.9% gap
MEC
10.7%
2.7%
CLNE
Higher net margin
MEC
MEC
35.0% more per $
MEC
-3.2%
-38.3%
CLNE
More free cash flow
MEC
MEC
$3.7M more FCF
MEC
$10.2M
$6.5M
CLNE
Faster 2-yr revenue CAGR
CLNE
CLNE
Annualised
CLNE
4.1%
-8.8%
MEC

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
CLNE
CLNE
MEC
MEC
Revenue
$112.3M
$134.3M
Net Profit
$-43.0M
$-4.4M
Gross Margin
6.8%
Operating Margin
-9.5%
-4.1%
Net Margin
-38.3%
-3.2%
Revenue YoY
2.7%
10.7%
Net Profit YoY
-42.6%
-127.3%
EPS (diluted)
$-0.21
$-0.22

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
MEC
MEC
Q4 25
$112.3M
$134.3M
Q3 25
$106.1M
$144.3M
Q2 25
$102.6M
$132.3M
Q1 25
$103.8M
$135.6M
Q4 24
$109.3M
$121.3M
Q3 24
$104.9M
$135.4M
Q2 24
$98.0M
$163.6M
Q1 24
$103.7M
$161.3M
Net Profit
CLNE
CLNE
MEC
MEC
Q4 25
$-43.0M
$-4.4M
Q3 25
$-23.8M
$-2.7M
Q2 25
$-20.2M
$-1.1M
Q1 25
$-135.0M
$20.0K
Q4 24
$-30.2M
$16.0M
Q3 24
$-18.2M
$3.0M
Q2 24
$-16.3M
$3.8M
Q1 24
$-18.4M
$3.2M
Gross Margin
CLNE
CLNE
MEC
MEC
Q4 25
6.8%
Q3 25
11.0%
Q2 25
10.3%
Q1 25
11.3%
Q4 24
8.9%
Q3 24
12.6%
Q2 24
13.6%
Q1 24
13.0%
Operating Margin
CLNE
CLNE
MEC
MEC
Q4 25
-9.5%
-4.1%
Q3 25
-12.8%
0.0%
Q2 25
-9.0%
0.1%
Q1 25
-121.7%
1.2%
Q4 24
-11.8%
19.0%
Q3 24
-8.1%
4.2%
Q2 24
-5.7%
5.0%
Q1 24
-9.0%
4.7%
Net Margin
CLNE
CLNE
MEC
MEC
Q4 25
-38.3%
-3.2%
Q3 25
-22.4%
-1.9%
Q2 25
-19.7%
-0.8%
Q1 25
-130.1%
0.0%
Q4 24
-27.6%
13.2%
Q3 24
-17.3%
2.2%
Q2 24
-16.6%
2.3%
Q1 24
-17.8%
2.0%
EPS (diluted)
CLNE
CLNE
MEC
MEC
Q4 25
$-0.21
$-0.22
Q3 25
$-0.11
$-0.13
Q2 25
$-0.09
$-0.05
Q1 25
$-0.60
$0.00
Q4 24
$-0.14
$0.76
Q3 24
$-0.08
$0.14
Q2 24
$-0.07
$0.18
Q1 24
$-0.08
$0.16

Balance Sheet & Financial Strength

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

Metric
CLNE
CLNE
MEC
MEC
Cash + ST InvestmentsLiquidity on hand
$156.1M
$1.5M
Total DebtLower is stronger
$226.8M
Stockholders' EquityBook value
$559.4M
$240.7M
Total Assets
$1.1B
$563.6M
Debt / EquityLower = less leverage
0.41×

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
CLNE
CLNE
MEC
MEC
Q4 25
$156.1M
$1.5M
Q3 25
$232.2M
$1.2M
Q2 25
$240.8M
$206.0K
Q1 25
$226.6M
$183.0K
Q4 24
$217.5M
$206.0K
Q3 24
$243.5M
$178.0K
Q2 24
$249.3M
$314.0K
Q1 24
$248.9M
$314.0K
Total Debt
CLNE
CLNE
MEC
MEC
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
Q1 24
$262.0M
Stockholders' Equity
CLNE
CLNE
MEC
MEC
Q4 25
$559.4M
$240.7M
Q3 25
$585.2M
$244.8M
Q2 25
$590.8M
$246.8M
Q1 25
$596.7M
$250.0M
Q4 24
$713.3M
$251.8M
Q3 24
$724.8M
$238.4M
Q2 24
$723.0M
$238.1M
Q1 24
$722.9M
$234.0M
Total Assets
CLNE
CLNE
MEC
MEC
Q4 25
$1.1B
$563.6M
Q3 25
$1.1B
$585.6M
Q2 25
$1.1B
$433.7M
Q1 25
$1.1B
$447.7M
Q4 24
$1.2B
$445.6M
Q3 24
$1.2B
$466.0M
Q2 24
$1.2B
$488.2M
Q1 24
$1.2B
$499.9M
Debt / Equity
CLNE
CLNE
MEC
MEC
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×
Q1 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
MEC
MEC
Operating Cash FlowLast quarter
$13.1M
$13.4M
Free Cash FlowOCF − Capex
$6.5M
$10.2M
FCF MarginFCF / Revenue
5.8%
7.6%
Capex IntensityCapex / Revenue
5.9%
2.4%
Cash ConversionOCF / Net Profit
TTM Free Cash FlowTrailing 4 quarters
$59.9M
$26.9M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
CLNE
CLNE
MEC
MEC
Q4 25
$13.1M
$13.4M
Q3 25
$13.1M
$1.9M
Q2 25
$35.9M
$15.0M
Q1 25
$23.4M
$8.3M
Q4 24
$21.9M
$38.0M
Q3 24
$21.4M
$17.9M
Q2 24
$18.8M
$23.3M
Q1 24
$2.6M
$10.6M
Free Cash Flow
CLNE
CLNE
MEC
MEC
Q4 25
$6.5M
$10.2M
Q3 25
$6.5M
$-1.1M
Q2 25
$30.9M
$12.5M
Q1 25
$15.9M
$5.4M
Q4 24
$10.3M
$35.6M
Q3 24
$42.0K
$15.1M
Q2 24
$4.8M
$19.2M
Q1 24
$-15.6M
$7.8M
FCF Margin
CLNE
CLNE
MEC
MEC
Q4 25
5.8%
7.6%
Q3 25
6.1%
-0.8%
Q2 25
30.2%
9.5%
Q1 25
15.4%
4.0%
Q4 24
9.5%
29.4%
Q3 24
0.0%
11.1%
Q2 24
4.9%
11.7%
Q1 24
-15.1%
4.9%
Capex Intensity
CLNE
CLNE
MEC
MEC
Q4 25
5.9%
2.4%
Q3 25
6.2%
2.1%
Q2 25
4.8%
1.8%
Q1 25
7.2%
2.2%
Q4 24
10.5%
1.9%
Q3 24
20.3%
2.1%
Q2 24
14.2%
2.5%
Q1 24
17.6%
1.7%
Cash Conversion
CLNE
CLNE
MEC
MEC
Q4 25
Q3 25
Q2 25
Q1 25
416.65×
Q4 24
2.38×
Q3 24
6.03×
Q2 24
6.15×
Q1 24
3.28×

Financial Flow Comparison

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

Revenue Breakdown by Segment

CLNE
CLNE

Volume Related Fuel Sales$73.6M66%
Services$15.1M13%
Station Construction Sales$10.7M9%
Volume Related Renewable Identification Number Credits$9.5M8%
Volume Related Low Carbon Fuel Standard Credits$3.4M3%

MEC
MEC

Fabrication$72.2M54%
Construction And Access$19.2M14%
Tubes$16.2M12%
Other Market$11.9M9%
Agriculture$7.7M6%
Military$6.7M5%
Outdoor Sports$1.7M1%

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