That mostly depends on the will of the regulator, technically these systems are mostly ready. The NuScale 50MW modular reactor has now gotten its safety approval [1,2 - interesting to see how Popular Mechanics claims to "like nuclear technology" while the Scientific American article shows the more negative attitude "green" proponents usually espouse ] so it is a step closer to reality, what remains is mostly more rounds of approval and certification. In the UK Rolls Royce is working on a larger (440MW) [3] type of modular reactor with a stated goal of having them up and running in 10 years, building at a pace of 2 per year. Russia and China are also working on this type of reactor, so is Argentina. The IAEA has a technology roadmap for the deployment of small modular reactors [4] for those who want to read more on the subject.
To answer your "less than 15" question succinctly: certainly, as long as the activists are kept at bay. Possibly, if they are allowed to roam free to wreak havoc. Probably not if they are put in control.
To answer your "less than 15" question succinctly: certainly, as long as the activists are kept at bay. Possibly, if they are allowed to roam free to wreak havoc. Probably not if they are put in control.
[1] https://www.popularmechanics.com/science/a33896110/tiny-nucl...
[2] https://www.scientificamerican.com/article/first-u-s-small-n...
[3] https://www.bbc.com/news/science-environment-54703204
[4] https://www-pub.iaea.org/MTCD/Publications/PDF/PUB1944_web.p...