Closing the Circle

A large reactor fleet is a strategic liability if the fuel to run it comes from abroad. China understands this, and is methodically working to close its nuclear fuel cycle, to mine, enrich, use, reprocess and re-use fuel with as little foreign dependence as possible. The most ambitious piece is the fast-breeder reactor, which can produce more fissile fuel than it consumes.

Two such reactors, the CFR-600 units at Xiapu in Fujian, are the centrepiece: each rated at 600 megawatts electric, with a breeding ratio above one, the first now operating and the second expected around 2026.^[2][4] Around them China is assembling the rest of the circle: demonstration reprocessing plants in Gansu, the first of which began operating before mid-2025, and a MOX fuel-fabrication plant completed in late 2024 to turn recovered plutonium back into reactor fuel.^[3][1]

Enrich at home, breed more fuel than you burn, buy the mines abroad. This is what energy sovereignty looks like, built one plant at a time.

The uranium map

Upstream, China plays a global game. Its uranium demand, over 11,000 tonnes in 2023 and projected past 40,000 by 2040, far outstrips domestic output of roughly 1,700 tonnes, so it runs a deliberate “thirds” strategy: about a third mined at home, a third from Chinese-owned equity stakes in foreign mines from Namibia to Kazakhstan and Niger, and a third bought on the open market.^[1] On enrichment it is broadly self-sufficient, with capacity in the millions of separative work units and rising.^[1]

Two honest caveats. Sources disagree on the exact fuel used in the CFR-600’s first core, and independent confirmation of its grid connection is thin, so its operational status should be stated carefully. And the same reprocessing-and-breeding capability that closes the fuel cycle also produces separated plutonium, which analysts flag as a proliferation concern; China does not publish its civil plutonium inventory.

What it means for capital

The fuel cycle is the unglamorous foundation that makes China’s reactor ambition strategically durable: a fleet you can fuel from your own mines, enrichment and reprocessing is far harder for a rival to disrupt than one dependent on imported fuel. For investors it widens the lens beyond reactors to the whole value chain, uranium equity stakes, enrichment, reprocessing, fast-reactor and MOX technology, where China is quietly building capability and global footprint. It also carries a geopolitical charge: the breeder-and-reprocessing route is dual-use, and the plutonium it separates ensures China’s civil nuclear expansion will be read, abroad, through a security lens as much as an energy one.