After power is restored in Bleak Beach, the next move is to keep advancing the “Brighten Things Up!” storyline by checking back with Professor Tangrowth and completing the follow-up beach objectives. The main things to do are rebuild the Pokémon Center, fix remaining flooded or dark areas, and continue placing power poles or lighting where the quest asks for it.

What usually comes next

  • Talk to Professor Tangrowth again after each major step, because the story often unlocks the next task only after that checkpoint.
  • Keep extending power across the beach, especially to key structures like the watermill, windmill area, and other dead lights.
  • If the game sends you to other requests afterward, Bleak Beach can branch into new progression paths once the area is brightened up enough.

Practical next steps

  1. Finish any remaining lighting or electricity connections around the harbor and central beach.
  1. Rebuild the Pokémon Center once the quest chain allows it.
  1. Complete any local cleanup tasks tied to flooding or blocked paths.
  1. After that, continue with the next area or request chain the story unlocks.

One-sentence version

In short, after restoring power, you should keep pushing the Bleak Beach questline forward by talking to Professor Tangrowth, finishing the remaining power-restoration tasks, and then rebuilding the Pokémon Center.