---
title: Thorium Molten Salt Reactor
type: technology
url: "https://www.envisioning.com/research/grid/china__thorium-molten-salt-reactor"
hub: grid
summary: "China's TMSR-LF1 became the first thorium reactor in the world to achieve sustained operation in 2025, running on a fuel source 4x more abundant than uranium"
---

# Thorium Molten Salt Reactor

China's TMSR-LF1 became the first thorium reactor in the world to achieve sustained operation in 2025, running on a fuel source 4x more abundant than uranium
- Technology Readiness Level: 4/9
- Impact: 3/5
- Investment: 4/5
Located in the Gobi Desert near Wuwei, Gansu Province, the 2MW pilot reactor operated at full power for 10 days with thorium fuel in October 2025, successfully detecting protactinium-233 — proof that the thorium breeding cycle works. A larger commercial plant is under construction nearby, targeting completion by 2030.

Thorium's advantages over uranium are significant: it's 4x more abundant, produces less long-lived radioactive waste, and the reactor design is inherently safer — molten salt reactors drain into a catch basin if they overheat, making meltdowns physically impossible.

The technology is now being adapted for maritime use: Jiangnan Shipyard plans the world's first thorium-powered container ship with a 200MW reactor. If successful, a single cargo ship could sail for 10 years without refueling, eliminating the shipping industry's dependence on bunker fuel.

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Source: Envisioning — Technology Research Institute (https://www.envisioning.com/research/grid/china__thorium-molten-salt-reactor)