Why OPAL Fuels Fell Even As Sales Rose

If you had looked at OPAL Fuels on 1 January 2026 and decided to wait for clearer signals, that patience carried a hidden outcome. For OPAL Fuels shareholders, the loss from the start of the year was 39.1%, including dividends. That decline now sits alongside a CEO transition announcement and weaker net margin in Q2 2026. Which assumption from the earlier bullish and bearish research would you question most after seeing this result?

This theme extends beyond OPAL Fuels. See which of 42 power grid technology and infrastructure stocks may still merit a closer look.

The Two OPAL Fuels Stories Investors Had To Weigh

OPAL Fuels shares cost US$2.35 at the start of the period, and investors were choosing between two very different stories about where the business could go next.

The bullish narrative, with a Fair Value of US$7 that reflected what its assumptions implied rather than today’s quote, leaned on landfill RNG projects and vertical integration, plus assumptions of 20.7% annual revenue growth and profit margins rising from 0.5% to 3.3% by 2028.

The bearish narrative, with a Fair Value of US$2 based on more cautious expectations, focused on accelerating electrification and policy risk, while still assuming 17.2% annual revenue growth, margins lifting to 3.5%, and heavy reliance on RIN and LCFS incentives.

What The Results Put To The Test For OPAL Fuels

OPAL Fuels reported Q2 2026 revenue of US$83.399m versus US$80.456m a year earlier, which loosely fits both bullish and cautious growth assumptions. The sharper signal came from profitability. Net income moved from a US$0.8m profit to a US$1.501m loss, and net margin fell from 1.0% to 1.8% in the red, so the optimistic margin uplift remained unproven. Overall, the evidence supported the cautious case.

The lesson here is simple. When a thesis leans on margin expansion, do not just track revenue. Watch net income direction and the reported net margin percentage every quarter to see if profitability is actually moving toward the forecast.

What OPAL Fuels’ Lower Price Now Asks You To Believe

OPAL Fuels trades at US$1.45 today, after a 39.1% loss from the start of the year. The bullish analyst Narrative on Simply Wall St places its Fair Value above that level and frames the gap around landfill RNG projects, tax credit monetization, and deeper integration with heavy trucking fleets.

On that view, a buyer now would need to believe OPAL can translate its project pipeline and tax credits into materially higher, more durable margins over time.

"Recent bipartisan federal legislation and the extension of key production tax credits not only enhance short-term EBITDA but fundamentally derisk and extend policy support for at least four more years, ensuring sustained high-margin cash generation and protecting project returns during periods of volatile environmental credit pricing."

One Narrative has put a figure on that disagreement. → See the Narrative with its higher Fair Value, assumptions and all

Which Company Could Surprise You Next?

This company's disappointment is already part of the story. Your next idea could come from looking where the price and the possibilities still seem far apart. Here are three companies priced below our estimates.

• Company 1 - 43% below our estimate - turns airport identity subscriptions into a broader access platform for governments and enterprises.
• Company 2 - 30% below our estimate - adds manufacturing lines aimed at higher value AI data center and photonics programs.
• Company 3 - 26% below our estimate - scales a low cost digital bank model as customers deepen product use and new markets break even.

That is three of the list. See all 40 potentially undervalued companies →

Have feedback on this article? Concerned about the content? Get in touch with us directly. Alternatively, email editorial-team@simplywallst.com