key takeaway
SMRs (small modular nuclear reactors) are emerging as a key response to the exponential growth in data centers' electricity needs, with a market estimated at $1 trillion by 2050 in the United States. Europe is lagging behind Anglo-Saxon ecosystems in industrial and capital terms, due to insufficient funding and a lack of stable political acceptability (a first demonstrator requiring nearly €1 billion). Nevertheless, the SMR/data center pairing could offer Europe, and France in particular, an opportunity to seize in terms of energy and industrial sovereignty.
They represent the new “holy grail” for energy companies and tech giants.
Small Modular Reactors (SMRs), compact nuclear reactors producing anywhere from a few dozen to several hundred megawatts, now sit at the center of a major energy, economic, and geopolitical equation: how to meet the exponential growth in electricity demand—particularly driven by data centers—without increasing Europe’s carbon footprint.
A technological promise worth 1,000 billion USD
In the United States, several analyses estimate the potential SMR market at 1,000 billion USD by 2050.
These modular units, designed for serial production, aim to deliver localized, continuous, carbon-free electricity—where renewable energy remains intermittent.
Their purpose is to directly power major industries, cities, and highly sensitive digital infrastructures (data centers, sovereign clouds, AI platforms), whose energy demand is growing exponentially.
Europe : a battleground of competing models
Across Europe, projects are multiplying, but few have yet demonstrated industrial viability.
The technological framework remains to be stabilized, financing structures remain to be secured, and regulatory standards remain to be harmonized.
European programs are struggling to compete with more integrated and heavily funded ecosystems in Anglo-Saxon countries.
The risk is clear: Europe could become a testing ground rather than a structuring force in this energy revolution.
Industrial and capital gap
Since 2019, US players have benefited from several billion dollars in public and private investment, while European initiatives are still struggling to move beyond prototype stages.
Most national programs face a double constraint: short financing cycles and hesitant political acceptance.
Yet a single first-of-a-kind demonstrator requires nearly 1 billion euros of initial investment, according to regulatory estimates.
Data centers as key catalysts
It is within the digital sector that the most strategic applications are emerging.
Hyperscalers are seeking decentralized, stable, and carbon-neutral energy solutions for their infrastructure.
The coupling of SMRs and data centers could clearly become part of the next-generation digital energy mix, offering Europe a rare opportunity for industrial and energy sovereignty—if it manages to seize it.
France, in particular, has all the assets to play a leading role in the development of the SMR market in Europe.