>>11993203http://www.oecd-nea.org/ndd/pubs/2016/7301-uranium-2016.pdf>ConclusionAs documented in this volume, sufficient uranium resources exist to support continued use of nuclear power and significant growth in nuclear capacity for electricity generation and other uses in the long term. Identified resources,
8 including reasonably assured resources and inferred resources, are sufficient for over 135 years, considering uranium
requirements of about 56 600 tU (data as of 1 January 2015). If estimates of current rates of uranium consumption in power reactors9 are used, the identified resource base would be sufficient for over 160 years of reactor supply. Exploitation of the entire conventional
resource10 base would increase this to well over 240 years
Another source tells me we can expect 1000 years of supply, if we take into account undiscovered resources, at our current rate of consumption.
Besides that
>there are also considerable unconventional resources, including phosphate deposits and black schists/shales that could be used to significantly lengthen the time that nuclear energy could supply energy demand using current technologies. However, more effort and investment would need to be devoted to better defining the extent of this potentially significant source of uranium and developing cost-effective extraction techniques. Deployment of advanced reactor and fuel cycle technologies could also significantly add to world energy supply in the long term. Moving to advanced technology reactors and recycling fuel could increase the long-term availability of nuclear energy from
hundreds to thousands of years. In addition, thorium, which is more abundant than uranium in the earth’s crust, is also a potential source of nuclear fuel, if alternative fuel cycles are developed and successfully introduced in a cost-effective manner. Thorium-
fuelled reactors have been demonstrated and operated commercially in the past.
