Summary
- J.P. Morgan estimates an additional 89TWh of annual European data centre demand by 2030 versus 2023.
- Iberia and the Nordics are expected to account for around 45% of the increase.
- The growth strengthens interest in firm generation but does not remove grid-connection and transmission constraints.
Rapid data centre growth is strengthening the investment case for nuclear power in Europe as developers and governments look for large volumes of low-carbon electricity that can support continuous compute loads, according to new J.P. Morgan research.
The bank estimates that European data centres could require an additional 89TWh of electricity annually by 2030 compared with 2023. Iberia and the Nordic region are expected to account for around 45% of that increase.
The estimate is higher than some institutional projections. European Commission figures cited alongside the research put current European data centre electricity consumption at roughly 70TWh, rising towards 115TWh by 2030. The difference illustrates the uncertainty around how quickly accelerated-computing infrastructure will move from announcements into operational load.
J.P. Morgan’s argument is that larger and more continuous electricity demand improves the economic case for nuclear generation, particularly as European energy policy tries to combine digital-capacity growth, decarbonisation, and energy security.
Nuclear generation offers firm output with low operational carbon emissions, but it does not by itself solve the principal constraint facing many proposed European data centres. A generation asset can add energy to the system while individual projects remain unable to secure timely transmission or distribution connections in the locations where developers want to build.
That distinction becomes important as the pipeline grows. Research cited in the analysis put Europe’s announced data centre pipeline at 66.1GW at the end of 2025 against 10.8GW of live capacity. Announced megawatts are not equivalent to commissioned load: projects still have to secure land, planning permission, grid capacity, equipment, financing, and customers.
The geographic split also matters. The Nordics combine relatively low-carbon electricity systems with cooler climates and significant generation resources, while Iberia has attracted increasing interest because of renewable potential and available development land. Both regions still require transmission investment if large new loads cluster faster than network capacity can be reinforced.
France presents a different case because nuclear generation already accounts for a large share of electricity supply. Other countries are extending reactor lifetimes, reconsidering nuclear policy, or examining new-build programmes, while small modular reactors are frequently discussed as a future source for industrial and digital infrastructure. Timelines remain a constraint: new nuclear capacity generally develops on a much longer programme than a data centre shell.
For operators, the practical question remains how much firm capacity can be contracted at a specific site and when. Long-term nuclear-backed power arrangements could become part of the procurement mix, but they will sit alongside renewables, storage, demand flexibility, grid reinforcement, and, in some markets, on-site generation.
Europe’s AI build-out is therefore adding another large industrial demand source to an electricity system already being reshaped by electrification. The nuclear investment case may strengthen with that demand, but the useful measure for data centre developers will remain deliverable megawatts at the connection point rather than generation capacity on the system in aggregate.
