Topsoe intends to construct the world’s largest and most advanced industrial-scale electrolyzer production plant. The plant will produce high-temperature Solid Oxide Electrolyzer Cells (SOEC)—which have a higher energy efficiency that competing technologies. The new electrolyzer production plant, which will be constructed in Herning, Denmark, will be operational by 2024 and have an annual capacity of 500 MW with scalability up to 5 GW, making it one of the first industrial-scale plants of its kind. Construction is scheduled to begin in the second half of this year, subject to Board and other regulatory approvals. The Topsoe SOEC electrolyzer is a compact stack built primarily from abundant, low-cost ceramic materials enclosed within a metal housing. To produce hydrogen, it utilizes electricity to split water molecules (H 2 O) into hydrogen (H 2 ) and oxygen (O 2 ). This is accomplished by three components: an anode, a cathode, and an electrolyte. […]