Green hydrogen production

Current drawbacks include high production costs, significant infrastructure needs, and some energy losses compared to direct electrification.

Green hydrogen is set to play a major role in the global drive for net-zero emissions and sustainable energy.

Green hydrogen is hydrogen created by splitting water into hydrogen and oxygen using renewable electricity, typically with Proton Exchange Membrane (PEM) electrolysis or other electrolysis technologies, resulting in virtually zero CO₂ emissions.

Green hydrogen enables decarbonization of hard-to-abate sectors like chemical or steel industry, refining, shipping, and aviation, and makes renewable energy available beyond the power grid via sector coupling.

PEM (Proton Exchange Membrane) electrolyzers use a membrane to separate hydrogen and oxygen gases while allowing protons to pass, harnessing volatile renewable energy with high efficiency, flexibility, and power density.

Siemens Energy offers scalable solutions, from modular electrolyzer systems to 100 MW reference plants to gigawatt-scale installations, leveraging a prefabricated and modular electrolyzer core system for rapid deployment.

Green hydrogen can decarbonize power generation, chemical or steel industry, refining, shipping, and aviation, and buildings—especially sectors that cannot be directly electrified—by replacing fossil hydrogen or serving as feedstock for chemical synthesis, refineries or e-fuels and other derivatives.

Yes, PEM electrolyzers are especially suited for flexible, efficient operation with fluctuating energy inputs from renewables, maintaining high-quality gas output.

Comprehensive service agreements are available, from basic maintenance to premium digital monitoring and long-term service agreements including extended warranties, plus full support along the hydrogen value chain.

Siemens Energy leverages decades of industry experience, learnings from several operational hydrogen projects as well projects in execution, advanced engineering, automation, and robust safety standards to deliver reliable, on-time, on-budget projects.

Power-to-X refers to converting renewable electricity into green hydrogen and its derivatives (like e-Methanol, e-Ammonia), supporting clean fuels for multiple sectors; Siemens Energy provides both technology and expertise for this transformation.

Contact Siemens Energy’s support team for 24/7 assistance, technical papers, and tailored project consulting to accelerate green hydrogen implementation from planning to operation.