Many UK shares have delivered strong returns in 2026. But sadly, not every stock’s following that path right now.
Ceres Power Holdings (LSE:CWR) is a stark case in point. Having rocketed almost 300% between January and May, the clean energy company has since lost 41.8% in a single month, including a brutal 25.8% drop in the final week of June.
What just happened?
A business at the frontier of clean energy
As a quick introduction, Ceres Power’s a technology licensing business that develops solid oxide fuel cells (SOFC) and electrolysers.
Rather than manufacturing products itself, it licenses its technology to industrial partners such as Doosan, Delta Electronics, Weichai, and Shell, earning royalties as those partners scale production.
It’s a genuinely differentiated model. And the commercial case is increasingly compelling, with SOFC demand forecast to reach 22 gigawatts a year by 2030, driven in large part by the explosion of AI-powered data centres seeking fast, reliable, off-grid power solutions.
In 2025, the business reached a significant milestone. Doosan commenced mass production of Ceres-designed fuel cells at its new 50MW facility in South Korea, generating the company’s first-ever royalty income. And reaching this milestone is a big reason why the Ceres stock price went parabolic earlier this year.
But if the business is progressing, why has the stock now suddenly started crashing?
What’s going on?
Three factors converged to trigger the sell-off. First, a broader rotation away from high-growth speculative stocks in June pushed investors out of long-duration technology names. And Ceres, which has yet to turn a profit, was squarely in that crossfire.
Second, the company announced a capital raise of around £100m, issuing 17.8 million new shares.
With a strengthening balance sheet and key partners scaling up, it isn’t surprising to see this share issuance get oversubscribed.
The only problem is, existing shareholders have just been diluted. And this substantial dilution, paired with a previously explosive run up, have caused investors to reassess, concluding that Ceres’ shares may have simply run too far ahead of its fundamentals.
With that in mind, a sharp pullback isn’t too surprising. So what should I do now?
Is this a buying opportunity?
On the one hand, contracted revenues for 2026 stand at around £45m with management targeting a 20% reduction in operating costs this year.
And with partners such as Delta Electronics building a dedicated manufacturing plant for Ceres-designed cells in Taiwan, the group’s revenue stream could be set to accelerate.
On the other hand, Ceres remains unprofitable, reporting a £47.6m loss last year with its first royalties only contributing around £110,000. That’s expected to dramatically change. But for the time being, the gap between the vision and the financial reality remains very wide.
The bottom line
Ceres Power’s not for the faint-hearted. It’s a pre-profit, high-conviction technology play that lives and dies by commercial execution and partner momentum.
There’s a very real thesis behind expected data centre demand for SOFCs. But even after its recent sell-off at a price-to-sales ratio of 28.2, the stock continues to trade at a pretty lofty premium.
That’s why I think there are far better UK shares for investors to explore today.
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Zaven Boyrazian does not hold any positions in the companies mentioned.
