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Side-by-side financial comparison of OPAL Fuels Inc. (OPAL) and Ouster, Inc. (OUST). Click either name above to swap in a different company.

OPAL Fuels Inc. is the larger business by last-quarter revenue ($88.4M vs $62.2M, roughly 1.4× Ouster, Inc.). On growth, Ouster, Inc. posted the faster year-over-year revenue change (106.6% vs 18.7%). OPAL Fuels Inc. produced more free cash flow last quarter ($-13.4M vs $-37.2M). Over the past eight quarters, Ouster, Inc.'s revenue compounded faster (54.8% CAGR vs 17.6%).

OPAL Fuels Inc. is a North American energy company focused on producing and distributing low-carbon renewable natural gas (RNG). It captures methane from landfills, dairy operations and other organic waste streams to produce RNG, which is mainly supplied to heavy-duty transportation fleets, commercial logistics operators and public transport entities to help reduce their greenhouse gas emissions.

Ouster, Inc. is an American lidar technology company headquartered in San Francisco, California. It builds high-resolution, digital 3D lidar sensors for use in autonomous vehicles, industrial, robotics, drones, mapping, defense, and security systems.

OPAL vs OUST — Head-to-Head

Bigger by revenue
OPAL
OPAL
1.4× larger
OPAL
$88.4M
$62.2M
OUST
Growing faster (revenue YoY)
OUST
OUST
+87.9% gap
OUST
106.6%
18.7%
OPAL
More free cash flow
OPAL
OPAL
$23.8M more FCF
OPAL
$-13.4M
$-37.2M
OUST
Faster 2-yr revenue CAGR
OUST
OUST
Annualised
OUST
54.8%
17.6%
OPAL

Income Statement — Q4 FY2025 vs Q4 FY2025

Metric
OPAL
OPAL
OUST
OUST
Revenue
$88.4M
$62.2M
Net Profit
$16.2M
Gross Margin
60.2%
Operating Margin
7.5%
1.5%
Net Margin
18.3%
Revenue YoY
18.7%
106.6%
Net Profit YoY
401.5%
EPS (diluted)
$0.08
$0.10

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
OPAL
OPAL
OUST
OUST
Q4 25
$88.4M
$62.2M
Q3 25
$77.9M
$39.5M
Q2 25
$77.4M
$35.0M
Q1 25
$83.0M
$32.6M
Q4 24
$74.5M
$30.1M
Q3 24
$82.6M
$28.1M
Q2 24
$69.8M
$27.0M
Q1 24
$64.0M
$25.9M
Net Profit
OPAL
OPAL
OUST
OUST
Q4 25
$16.2M
Q3 25
$11.4M
$-21.7M
Q2 25
$7.6M
$-20.6M
Q1 25
$1.3M
$-22.0M
Q4 24
$-5.4M
Q3 24
$17.1M
$-25.6M
Q2 24
$1.9M
$-23.9M
Q1 24
$677.0K
$-23.8M
Gross Margin
OPAL
OPAL
OUST
OUST
Q4 25
60.2%
Q3 25
42.1%
Q2 25
45.2%
Q1 25
41.3%
Q4 24
43.8%
Q3 24
38.3%
Q2 24
33.7%
Q1 24
28.6%
Operating Margin
OPAL
OPAL
OUST
OUST
Q4 25
7.5%
1.5%
Q3 25
4.6%
-61.4%
Q2 25
-1.1%
-76.5%
Q1 25
-2.3%
-73.0%
Q4 24
-0.5%
-85.1%
Q3 24
14.9%
-98.0%
Q2 24
8.1%
-93.6%
Q1 24
5.6%
-99.5%
Net Margin
OPAL
OPAL
OUST
OUST
Q4 25
18.3%
Q3 25
14.6%
-55.0%
Q2 25
9.8%
-58.8%
Q1 25
1.5%
-67.5%
Q4 24
-7.2%
Q3 24
20.7%
-91.1%
Q2 24
2.7%
-88.4%
Q1 24
1.1%
-91.9%
EPS (diluted)
OPAL
OPAL
OUST
OUST
Q4 25
$0.08
$0.10
Q3 25
$0.05
$-0.37
Q2 25
$0.03
$-0.38
Q1 25
$-0.01
$-0.42
Q4 24
$-0.05
$-0.46
Q3 24
$0.09
$-0.54
Q2 24
$-0.01
$-0.53
Q1 24
$-0.01
$-0.55

Balance Sheet & Financial Strength

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

Metric
OPAL
OPAL
OUST
OUST
Cash + ST InvestmentsLiquidity on hand
$24.4M
$208.6M
Total DebtLower is stronger
$361.3M
Stockholders' EquityBook value
$-12.9M
$261.7M
Total Assets
$959.5M
$349.5M
Debt / EquityLower = less leverage

8-quarter trend — quarters aligned by calendar period.

Cash + ST Investments
OPAL
OPAL
OUST
OUST
Q4 25
$24.4M
$208.6M
Q3 25
$29.9M
$244.5M
Q2 25
$29.3M
$226.5M
Q1 25
$40.1M
$168.2M
Q4 24
$24.3M
$172.0M
Q3 24
$31.0M
$151.4M
Q2 24
$27.6M
$184.2M
Q1 24
$34.2M
$187.8M
Total Debt
OPAL
OPAL
OUST
OUST
Q4 25
$361.3M
Q3 25
$351.2M
Q2 25
$331.6M
Q1 25
$307.0M
Q4 24
$307.5M
Q3 24
$252.9M
Q2 24
$233.3M
Q1 24
$208.7M
Stockholders' Equity
OPAL
OPAL
OUST
OUST
Q4 25
$-12.9M
$261.7M
Q3 25
$7.5M
$247.4M
Q2 25
$-25.0M
$221.0M
Q1 25
$57.1M
$167.9M
Q4 24
$-148.4M
$180.9M
Q3 24
$-180.1M
$171.7M
Q2 24
$-273.0M
$170.6M
Q1 24
$-382.4M
$167.2M
Total Assets
OPAL
OPAL
OUST
OUST
Q4 25
$959.5M
$349.5M
Q3 25
$916.7M
$353.8M
Q2 25
$905.5M
$321.8M
Q1 25
$884.9M
$268.6M
Q4 24
$881.1M
$276.1M
Q3 24
$831.1M
$255.2M
Q2 24
$782.3M
$309.9M
Q1 24
$750.5M
$317.7M
Debt / Equity
OPAL
OPAL
OUST
OUST
Q4 25
Q3 25
46.95×
Q2 25
Q1 25
5.38×
Q4 24
Q3 24
Q2 24
Q1 24

Cash Flow & Capital Efficiency

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

Metric
OPAL
OPAL
OUST
OUST
Operating Cash FlowLast quarter
$-3.5M
$-15.4M
Free Cash FlowOCF − Capex
$-13.4M
$-37.2M
FCF MarginFCF / Revenue
-15.1%
-59.8%
Capex IntensityCapex / Revenue
11.1%
35.0%
Cash ConversionOCF / Net Profit
-0.22×
TTM Free Cash FlowTrailing 4 quarters
$-34.2M
$-64.8M

8-quarter trend — quarters aligned by calendar period.

Operating Cash Flow
OPAL
OPAL
OUST
OUST
Q4 25
$-3.5M
$-15.4M
Q3 25
$18.2M
$-18.3M
Q2 25
$-7.9M
$-1.3M
Q1 25
$29.7M
$-4.9M
Q4 24
$-532.0K
$-2.6M
Q3 24
$17.7M
$-3.8M
Q2 24
$533.0K
$-21.6M
Q1 24
$13.7M
$-5.7M
Free Cash Flow
OPAL
OPAL
OUST
OUST
Q4 25
$-13.4M
$-37.2M
Q3 25
$-9.3M
$-20.0M
Q2 25
$-29.7M
$-2.2M
Q1 25
$18.1M
$-5.4M
Q4 24
$-55.0M
$-4.0M
Q3 24
$-5.4M
$-4.3M
Q2 24
$-22.5M
$-22.0M
Q1 24
$-13.0M
$-7.1M
FCF Margin
OPAL
OPAL
OUST
OUST
Q4 25
-15.1%
-59.8%
Q3 25
-11.9%
-50.7%
Q2 25
-38.4%
-6.3%
Q1 25
21.8%
-16.6%
Q4 24
-73.8%
-13.3%
Q3 24
-6.5%
-15.4%
Q2 24
-32.2%
-81.5%
Q1 24
-20.4%
-27.4%
Capex Intensity
OPAL
OPAL
OUST
OUST
Q4 25
11.1%
35.0%
Q3 25
35.3%
4.3%
Q2 25
28.2%
2.5%
Q1 25
13.9%
1.7%
Q4 24
73.1%
4.8%
Q3 24
27.9%
2.0%
Q2 24
32.9%
1.3%
Q1 24
41.8%
5.3%
Cash Conversion
OPAL
OPAL
OUST
OUST
Q4 25
-0.22×
Q3 25
1.60×
Q2 25
-1.04×
Q1 25
23.11×
Q4 24
Q3 24
1.03×
Q2 24
0.28×
Q1 24
20.26×

Financial Flow Comparison

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

Revenue Breakdown by Segment

OPAL
OPAL

Fuel Station Services Segment$65.1M74%
Related Party$12.1M14%
Renewable Power Segment$8.6M10%
Other$2.6M3%

OUST
OUST

Segment breakdown not available.

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