Plug Power Inc. (NASDAQ: PLUG) has signed a 280-megawatt GenEco electrolyzer supply agreement with Arcadia eFuels for Project ENDOR, located at the Port of Vordingborg on Denmark's south coast, according to a company statement.

The facility is designed to use renewable grid power to produce approximately 110 tons of renewable hydrogen per day. Arcadia eFuels plans to combine that hydrogen with captured carbon dioxide to produce synthetic jet fuel compatible with existing aircraft.

Alongside the supply agreement, the two companies signed a strategic cooperation agreement that positions Plug as the preferred electrolyzer supplier for four additional Arcadia eFuels projects in Europe and the Americas, representing more than 1 gigawatt of potential electrolyzer capacity. The agreement also gives Arcadia eFuels priority access to Plug's manufacturing capacity as each project advances.

The announcement follows three years of joint engineering work. Equipment deliveries are set to begin after the project issues a notice to proceed. Project ENDOR has not yet reached a final investment decision.

"Signing the ENDOR supply agreement alongside a strategic cooperation agreement positions Plug not only as the electrolyzer supplier for Arcadia eFuels' flagship project, but as their preferred partner across a pipeline of e-SAF developments in Europe and the Americas," said José Luis Crespo, President and Chief Executive Officer of Plug.

Amy Hebert, Chief Executive Officer of Arcadia eFuels, said the supply agreement represents one of several project documents that have been finalized as the project moves toward a final investment decision.

The EU's ReFuelEU Aviation regulation requires a rising share of sustainable aviation fuel at European airports, including a sub-target for synthetic fuels starting in 2030.

Plug stated it is currently executing multiple European electrolyzer projects, including a 100 MW GenEco installation at Galp's Sines refinery in Portugal.