Global nuclear generation achieved a major milestone this month. Total global nuclear power output reached 2,702 terawatt-hours (TWh), notching a new record for the second consecutive year, according to a statement from the World Nuclear Association.
Key Takeaways
- Global nuclear electricity output set a record high of 2,702 TWh, surpassing the previous record set in 2024.
- 440 operational reactors globally maintained an average capacity factor of 83.7%.
- The Range Nuclear Renaissance Index ETF (NUKZ ) offers comprehensive exposure to the entire nuclear value chain, including reactor design, construction, utilities, and fuel supply chains.
Global Nuclear Generation Extends Historic Growth Momentum
Nuclear capacity currently in operation grew to 423 gigawatts-electric (GWe) across nearly 440 active reactors worldwide in 2025. Global nuclear capacity is on track to reach 1,457 GWe by 2050, which would reflect 200 GWe beyond the goal of tripling current capacity.
Furthermore, three new reactors connected to electricity grids during the period. Construction began on 11 reactors last year. Operational efficiency remained remarkably strong, as the global fleet posted an average capacity factor of 83.7%.
Capacity factor is a measure of how often a means of power generation is putting out the amount of energy it is rated to. From the World Nuclear Association’s report, the reactors of the world were outputting their rated power levels about 84% of the year. This is often compared to the significantly lower capacity factors seen by wind and solar, which are both below 40%.
Positioning Portfolios Across the Nuclear Value Chain
This operational milestone underscores a broader fundamental shift across the global energy landscape. Investors seeking targeted exposure to this multidecade nuclear buildout may consider looking beyond simple spot commodity or single-stock plays.
The Range Nuclear Renaissance Index ETF (NUKZ ) delivers targeted access to the full nuclear value chain. Rather than focusing purely on raw material extraction, the fund captures the broader ecosystem. It holds companies involved in reactor construction, maintenance, and nuclear facility management.
As governments and hyperscaler data centers demand continuous carbon-free power, diversified nuclear ETFs remain uniquely positioned to benefit from the growing industry.
Looking for nuclear insights in your inbox? Subscribe here to keep a pulse on nuclear investing through our weekly research.
For more news, information, and analysis, visit the Nuclear Energy Content Hub.
vettafi.com is owned by VettaFi LLC (“VettaFi”). VettaFi is the index provider for NUKZ, for which it receives an index licensing fee. However, NUKZ is not issued, sponsored, endorsed, or sold by VettaFi. VettaFi has no obligation or liability related to the issuance, administration, marketing, or trading of NUKZ.
