Home / Glossary / Nuclear reactor build time

Nuclear reactor build time

Reactor build time is the period from the start of construction to first grid connection. It varies widely by country and reactor model, from around four years in the fastest programmes to well over a decade for first-of-a-kind designs.

Frequently asked questions

Which country builds reactors fastest?

Several Asian programmes connect reactors to the grid in about 4-6 years on average; first-of-a-kind Western projects often take a decade or more.

Explore the data: power plants by technology · HRSG map · nuclear map. Removable insulation for hot equipment like HRSGs: Inzonex.