As far as I can tell from looking, there are no breeder reactors for large scale power generation, there never have been, and while multiple countries are trying, none of them have actually done it.
There have been plenty. For example, the CANDU series of reactors developed in the 1950s and 60s. Breeder reactors were quite popular during the early days of nuclear power, as it was initially thought that there was maybe only 100 years’ worth of (easily accessible) nuclear material on earth, rather than the thousands (or tens of thousands) of years’ worth we know of now, due to both more reserves being discovered and also easier methods of fuel enrichment being developed.
The fact that breeder reactors have fallen out of favour due to abundant fuel reserves certainly says something.
As far as I can tell from looking, there are no breeder reactors for large scale power generation, there never have been, and while multiple countries are trying, none of them have actually done it.
There have been plenty. For example, the CANDU series of reactors developed in the 1950s and 60s. Breeder reactors were quite popular during the early days of nuclear power, as it was initially thought that there was maybe only 100 years’ worth of (easily accessible) nuclear material on earth, rather than the thousands (or tens of thousands) of years’ worth we know of now, due to both more reserves being discovered and also easier methods of fuel enrichment being developed. The fact that breeder reactors have fallen out of favour due to abundant fuel reserves certainly says something.