High-energy weapons expose the power-storage problem

Would railguns and lasers require nuclear reactors in surface warships?

In this 2021 answer, generation and storage limits make nuclear power the clearest route, although navies do not want to accept it.

Electrical generation and storage, rather than the railgun or laser alone, are identified as the immediate limiting issues. Conventional systems do not yet provide the required combination in this 2021 discussion. Nuclear propulsion is presented as the clearest route to enough power. The answer also notes that navies do not want to accept that solution, without expanding on their reasons.