Power to Hydrogen begins commercial green hydrogen at Antwerp-Bruges on 250 kW AEM stacks.

Power to Hydrogen (P2H2), a Columbus, Ohio–based anion exchange membrane electrolyzer developer, began commercial green hydrogen production on Friday, 18 September 2026, at the NextGen District of the Port of Antwerp-Bruges, according to the company’s release and a Hydrogen Central republication, both opened for this pack. The 500 kW system — two 250 kW stacks delivered to the site in August — is described by P2H2 as the first commercial deployment of 250 kW AEM stacks, more than 10× larger than conventional AEM stacks that typically range from 2 kW to 25 kW. Soft FLAG: “first commercial deployment” and the 10× comparison are company rankings.

The mechanism is hybrid AEM-alkaline electrolysis designed for variable renewable power. P2H2 says its proprietary cell places an alkaline separator between the membrane and the oxygen-producing electrode to protect the membrane and extend life; uses low-cost, iridium-free catalysts; runs a simpler balance of plant than conventional alkaline (including a single electrolyte loop); and uses mechanical membrane support that enables 30 bar output pressure with minimal hydrogen crossover, cutting downstream compression. Soft FLAG: those design claims — including “solved the core durability problem” — are company engineering framing. Soft FLAG: a 1,250-hour Repsol pilot announced 8 September, irreversible degradation of about 2 mV/kHr, projected stack life beyond 50,000 hours, and a levelized cost of about €3.86/kg under Repsol-specific H2A-Lite inputs are company pilot results and projections, not Antwerp operating data. The Antwerp unit’s 10–100% operating range is pitched to follow Belgium’s day-ahead prices — ramp up when power is cheap, down when it is not. Soft FLAG: “cost-competitive to other hydrogen sources” is company economics framing.

Offtake and scale path, as P2H2 states them: the system will initially produce up to 70 tonnes of green hydrogen per year for regional gas supplier Holthausen and other customers, mainly for mobility with industrial use as additional potential offtake. A second commercial order for another 500 kW (dual-250 kW) system for the EU-funded PYROCO2 project is to be delivered to Norwegian research institute SINTEF later this year. Soft FLAG: ERDF/EFRO and VLAIO Flemish support, and “close to 900,000 euro” EU/Flemish demonstration investment cited at the foot of the release, are funding colour from the company. Soft FLAG: P2H2’s backer list (AEP, EDP, E.ON, ESB, Air Liquide, JERA, Asahi Kasei) and 2026 World Economic Forum Technology Pioneer label are company biography, not Antwerp performance.

Named quotes in the release: CEO Paul Matter on proving AEM with hardware in a demanding industrial port; Carl Holthausen, Director and CTO of Holthausen, on local supply at a known cost; Thomas de Béthune for the European Commission in Belgium; Luk Lemmens, Province of Antwerp; Johan Klaps, Port of Antwerp-Bruges board president; and Roel Bosschaerts of NextGen Demo. Soft FLAG: port and government quotes are ceremony/partner framing.

What to watch without mood: published Antwerp tonnes delivered after the 18 September start; SINTEF dual-250 kW delivery timing; any multi-MW platform order that cites Antwerp operating data.

Floor: P2H2 Antwerp commercial 18 Sep — 500 kW (2×250 kW AEM stacks); up to 70 t/yr to Holthausen and others (co.); first commercial 250 kW AEM stacks (co.); SINTEF twin order later this year (co.).