Plug Power has secured an order for 25 megawatts (MW) of proton exchange membrane (PEM) electrolyzer systems from bp and Iberdrola’s joint venture, Castellón Green Hydrogen.

The project will employ five of Plug’s 5 MW containerized PEM electrolyzers with a 25 MW capacity to decarbonize the operations at bp’s Castellón refinery in Valencia, Spain and is expected to avoid 23,000 tons of CO₂ emissions per year.

Plug’s electrolyzers will be used at the project led by bp and Iberdrola to produce green hydrogen, replacing part of the refinery’s current use of gray hydrogen generated from natural gas in its operations.

The project will be developed in phases, with the potential expansion of up to 2 gigawatts (GW) of electrolysis capacity.

The Castellón refinery has a crude oil processing capacity of 110,000 barrels per day, equivalent to 6 million tons per year. In 2021, the facilities co-processed 61,000 tons of renewable residual material. In addition, the refinery consumes 15% less energy than a counterpart facility.