Comment by kergonath

Yes, there are significant issues. Nothing we do not anticipate solving, but still. It will take time and solving these issues in a resource-effective way so that it can actually work as a power plant will be a challenge.

> But fusion often use it's pending development as an argument against fission - a technology we already have and desperately need to adopt now.

If it helps, CEA is also doing a ton of R&D on fission (and batteries, among others). But there, the real issues are mostly political.