Hydrogen-capable power plant engines (e.g., Wärtsilä hydrogen-ready engines)

Technology group

Transmission system operator responsible for the high-voltage electricity grid and system operation in Spain

Technology group

Integrated energy company with a focus on renewable energy

Hydrogen produced from renewable electricity sources, considered a critical component for hydrogen's long-term credibility as a clean fuel.

A hydrogen-fuelled reciprocating engine is an internal combustion engine adapted to burn hydrogen instead of—or in combination with—conventional gaseous fuels to produce mechanical power that drives an electrical generator.[2][9] In the Spanish project, a large multicylinder engine unit built by a supplier such as Wärtsilä is configured to use hydrogen-rich fuel to generate electricity that is then fed into the national grid, demonstrating utility-scale hydrogen engine operation.[1][2] These engines can be based on modified gas-engine designs, incorporating changes to fuel injection, combustion chamber geometry, and control systems to handle hydrogen’s different combustion characteristics.[2][9]

Iberian Peninsula (specific project location within Spain reported as part of an industrial or former thermal power plant site, but not consistently named across accessible public sources)