H-Power signs landmark green hydrogen supply agreement with Protium, first commercial sale from cracked ammonia in the UK

H-Power green hydrogen deal with Protium marks a real commercial milestone

H-Power has announced a supply agreement with Protium for 5,000 kilograms of fuel cell grade green hydrogen. On the face of it, that may sound like a niche industrial update. In reality, it is a meaningful step because the company says this is the UK’s first commercial sale of bulk hydrogen to a third-party customer produced from cracked ammonia.

That matters because investors in early-stage clean energy businesses are always asking the same question: can the technology move beyond demonstrations and into paid-for commercial use? This announcement says yes – at least on a first, modest scale.

What H-Power has actually signed – and what has not been disclosed

The headline item is straightforward. H-Power will sell 5,000 kilograms of green hydrogen, produced at its pilot ammonia cracker plant, to Protium.

The hydrogen will come from bio-ammonia and is described as 99.97% pure hydrogen, certified to ISO 14687 Grade D, which is a standard for hydrogen quality suitable for proton exchange membrane, or PEM, fuel cells. In plain English, that means the hydrogen is clean enough for demanding fuel cell applications.

There is also a second part to the arrangement. H-Power and Protium have agreed an initial 12-month deal, extendable by mutual agreement, to create a “virtual depot” at H-Power’s Dunsfold facility. That means Protium can store some of its hydrogen logistics equipment there, including multiple cylinder packages, so hydrogen can be filled and distributed more efficiently.

What has not been disclosed is just as important. H-Power has not stated the contract value, the selling price per kilogram, expected revenue, expected margin, or delivery timetable for the 5,000 kilograms. So while the strategic message is strong, the short-term financial impact is not disclosed.

Key numbers from the H-Power Protium hydrogen supply agreement

Item	Figure
Hydrogen volume sold	5,000 kilograms
Hydrogen purity	99.97%
Hydrogen standard	ISO 14687 Grade D
Virtual depot agreement term	12 months, extendable by mutual agreement
Permit for third-party hydrogen sales	Until 31 August 2026
HY5 portable cracker capacity	Up to 500 kilograms per day
Equivalent H-Power LC30 runtime	More than 100 days at 30kW full rated power

Why cracked ammonia hydrogen matters for the UK hydrogen market

H-Power’s angle is that ammonia can be used as a carrier for hydrogen, then “cracked” to release hydrogen nearer the point of use. The appeal is simple: hydrogen logistics are hard and expensive, so if ammonia can move and store energy more easily, that could help unlock supply.

This is why the Protium relationship looks sensible. Protium already has a hydrogen production and distribution network, and H-Power brings the ammonia cracking technology. Put the two together, and both companies are trying to prove that green hydrogen can be produced, stored and delivered in a more practical way.

For retail investors, the key phrase in the RNS is “commercially viable price”. H-Power repeats that point several times and says its model does not rely on government subsidies or incentives. That is encouraging because subsidy-free economics are what the market wants to see. The catch is that the company has not published the actual price, so investors are being asked to take management’s word for now.

Why the permit change was crucial to getting this deal done

This sale only became possible after an amendment to H-Power’s Dunsfold facility permit by the Environment Agency, as announced on 18 February 2026. The revised permit allows hydrogen produced from the ammonia cracker to be sold to third-party customers until 31 August 2026.

That is clearly a positive. Without the permit change, this commercial sale would not have happened.

But there is also a practical limitation here. The current permission described in the RNS runs only until 31 August 2026. So this announcement is a useful proof point, but investors should not mistake it for a permanent, fully scaled commercial operating licence unless and until the company says so.

What this says about H-Power’s path from pilot plant to larger rollout

The bigger strategic takeaway is that H-Power is trying to use the pilot plant to validate demand ahead of wider product rollout. The company says development of its HY5 decentralised portable cracker remains on track and that it is capable of producing up to 500 kilograms of hydrogen per day.

Management also says the HY5 should provide the lowest cost bulk fuel cell grade hydrogen available to industrial customers in the UK by the end of calendar year 2026, without subsidy. That’s a bold claim. If H-Power can back it up with repeat orders and disclosed economics, that would be a serious commercial step forward.

The company adds that the HY5 is positioned as an alternative to a 1.2MW electrolyser. That comparison is meant to show scale and relevance, although again, there is no side-by-side cost data in this RNS.

My view: positive strategic signal, but investors still need the revenue evidence

I think this is a genuinely positive RNS. Not because 5,000 kilograms on its own transforms the income statement overnight, but because it shows H-Power’s technology has crossed an important line from technical promise to a paying customer relationship.

The presence of Protium helps as well. This is not a vague memorandum of understanding with no operational substance. It includes an actual supply contract and a 12-month logistics arrangement around the Dunsfold site.

That said, investors should keep both feet on the ground. The sale size is still relatively small, the contract value is not disclosed, and the third-party sales permit currently runs only until 31 August 2026. So this is best seen as early commercial validation rather than proof that H-Power has already cracked large-scale profitability.

What retail investors should watch next after this H-Power RNS

• More supply contracts – One first sale is encouraging. A sequence of repeat sales would matter much more.
• Revenue disclosure – Investors need contract values, pricing and margin indicators to judge commercial quality.
• Permit progress – The current third-party sales permission lasts until 31 August 2026, so any extension or broader approval will be important.
• HY5 launch execution – Management says the HY5 rollout remains on track for the end of calendar year 2026.
• Order conversion – The company says there are significant numbers of enquiries. The market will want to see those turn into contracted orders.

Bottom line on the H-Power Protium green hydrogen agreement

This is the sort of announcement early-stage clean energy investors like to see: a clear UK-first claim, a real customer, and a commercial use case that fits the company’s wider strategy. It supports the investment case that ammonia cracking could become a practical route to low-carbon hydrogen supply.

Still, the shares will probably need more than milestone language to sustain momentum. The next step is simple: show that this first commercial sale leads to more contracts, broader permitting, and properly disclosed revenue growth. If that happens, this RNS could look like the moment H-Power started moving from promise to proof.