HomeNewsbp and Iberdrola choose Toledo-based Imefy to supply the main transformer for green H2 plant

bp and Iberdrola choose Toledo-based Imefy to supply the main transformer for green H2 plant

2/3/2025
  • The 25-MW renewable hydrogen (H2) plant is the largest in Spain and will be located at the bp refinery in Castellón
  • Castellón Green Hydrogen, a company owned by bp and Iberdrola, will invest more than €70 MM in the entire project
  • The project has received funding equivalent to €15 MM from the Spanish Recovery, Transformation and Resilience Plan, with funds to be allocated by NextGenerationEU

bp and Iberdrola have awarded the Toledo-based company Imefy the contract to manufacture and supply the transformer for the largest renewable H2 production plant in Spain (25 MW), which will be located at the bp refinery in Castellón. 

Imefy, headquartered in Los Yébenes, a municipality located in the province of Toledo, will manufacture, supply and supervise the assembly and commissioning of the three-phase power transformer—with 37 megavolt-amperes (MVA) of power and a 66/30 kilovolts (kV) transformation ratio—that will be supplied in the first quarter of 2026.

This award demonstrates bp and Iberdrola’s confidence, through the company created for the Castellón Green Hydrogen project, in Spanish companies in the development of the renewable H2 value chain, contributing to the integration of the territory and the creation of industrial and innovation opportunities in a growing market, acting as a lever for development. 

The project is expected to be operational in the second half of 2026 with an investment of more than €70 MM. In later phases of the project, the green H2 produced could also be used in key industries that are difficult to decarbonize in the Valencian Community, such as ceramics, to replace the natural gas used in their processes, in chemical industries and in heavy transport. 

Largest green H2 plant in Spain. The Castellón green H2 plant jointly promoted by Iberdrola España and bp will be the largest in Spain. Its 25-MW electrolyzer will be powered by renewable electricity through a power purchase agreement signed with Iberdrola España, which will supply 200 GWh/yr from Iberdrola España's photovoltaic and wind projects. 

Green H2 produced by water electrolysis fueled by renewable electricity will meet the European requirements for producing green H2 (Renewable Fuels of Non-Biological Origin, RFNBO) and support the transition of the bp refinery in Castellón to an integrated energy center. 

It is expected that 2,800 metric tpy of green H2 could replace part of the grey H2 currently used by the bp refinery in Castellón - currently produced from natural gas – and is expected to prevent the emission of 23,000 tpy of CO2, equivalent to the emissions of 5,000 cars in the same time period.

The plant has an equivalent funding of €15 MM from the Spanish Recovery, Transformation and Resilience Plan's Innovative Value Chain and Renewable Hydrogen Knowledge support programs, with funds to be allocated by the European Union's NextGenerationEU.

 

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