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Opal Fuels vs Montauk Renewables: OPAL and MNTK compared
Opal Fuels is the larger company: $83.4M of revenue in its latest quarter (Q2 2026) against $54.0M for Montauk Renewables (Q2 2026). Montauk Renewables is growing faster (+20% against +4% a year earlier). Montauk Renewables is more profitable, with an operating margin of -0.1% against -3.6%.
Where the money goes: OPAL and MNTK
Opal Fuels (OPAL) · Q2 2026
Opal Fuels, Q2 2026: revenue $83.4M (+4% year over year), operating margin -3.6%, net loss $4.1M, operating cash flow $10.8M. The chart follows the revenue to costs, profit and cash.
Montauk Renewables (MNTK) · Q2 2026
Montauk Renewables, Q2 2026: revenue $54.0M (+20% year over year), operating margin -0.1%, net earnings $226K, operating cash flow $14.6M. The chart follows the revenue to costs, profit and cash.
| Opal Fuels (OPAL) | Montauk Renewables (MNTK) | |
|---|---|---|
| Latest quarter | Q2 2026 | Q2 2026 |
| Revenue | $83.4M | $54.0M |
| Revenue growth, Y/Y | +4% | +20% |
| Operating margin | -3.6% | -0.1% |
| Net earnings | −$4.1M | $226K |
| Net margin | -5.0% | 0.4% |
| Operating cash flow | $10.8M | $14.6M |
Where the revenue comes from
Opal Fuels
- Fuel Station Services: $53.1M (64%)
- RNG fuel: $23.8M (29%)
- Renewable Power Segment: $6.5M (8%)
Montauk Renewables
- Natural Gas Environmental Attributes: $44.6M (83%)
- Natural Gas Commodity: $4.8M (9%)
- Electric Commodity: $2.6M (5%)
- Electric Environmental Attributes: $2.0M (4%)
Questions
Which is bigger, Opal Fuels or Montauk Renewables?
Opal Fuels is the larger company: $83.4M of revenue in its latest quarter (Q2 2026) against $54.0M for Montauk Renewables (Q2 2026).
Is Opal Fuels or Montauk Renewables growing faster?
Montauk Renewables is growing faster (+20% against +4% a year earlier).
Which is more profitable, Opal Fuels or Montauk Renewables?
Montauk Renewables is more profitable, with an operating margin of -0.1% against -3.6%.
More: Opal Fuels earnings · how Opal Fuels makes money · Montauk Renewables earnings · how Montauk Renewables makes money
From the companies' latest 10-Q, 10-K or earnings release (10-Q filed Aug 10, 2026; 10-Q filed Aug 5, 2026). Fiscal quarters can end on different dates. Not investment advice.