The new JUPITER supercomputer, inaugurated by Commissioner Zaharieva and German Chancellor Friedrich Merz at Forschungszentrum Jülich, has officially become the first European system to surpass the exascale threshold. JUPITER can perform more than one quintillion operations per second. It is comparable to the combined power of one million modern smartphones.
Ranked as Europe’s most powerful supercomputer and the fourth fastest worldwide, JUPITER blends unmatched performance with sustainability. Running entirely on renewable energy, it includes advanced cooling systems. Its energy reuse systems have earned it the top spot on the Green500 ranking. JUPITER is recognized as the world’s most energy-efficient supercomputer module.
TRANSFORM EUROPEAN SCIENCE
With computing power exceeding one exaflop, JUPITER is set to transform European science and policy. Researchers will be able to run kilometre-scale climate and weather models. This would deliver more precise forecasts of extreme events such as floods, storms, and heatwaves. The system will also accelerate the development of artificial intelligence. It will power the future AI Factory (JAIF) announced in March 2025. The purpose is to train cutting-edge large language models and next-generation digital technologies.
JUPITER is the outcome of a €500 million joint investment. This investment comes from the European Union and Germany. It is channelled through the EuroHPC Joint Undertaking. It is part of a broader strategy. The aim is to establish a network of AI Gigafactories. These are large-scale, energy-efficient hubs. They are designed to train and deploy advanced AI models at scale.
Background
EuroHPC has already selected 13 AI Factory proposals across Europe. These proposals are designed to bring together computing power. They aim to integrate data and talent for AI development. In June 2025, the Commission also announced 76 proposals from 16 Member States to establish AI Gigafactories, envisioned as hyperscale facilities integrating supercomputing, data storage, and automation to build AI models with hundreds of trillions of parameters.
JUPITER marks a milestone in the EU’s ambition. It links Europe’s exascale computing infrastructure with cutting-edge AI initiatives. This effort aims to make the EU a global leader in both high-performance computing and artificial intelligence.
