Powering Up Poseidon

Powering Up Poseidon is an event quest in Fallout 76.

Detailed walkthrough
Most of the entrances are locked, needing a level 3 hacking level to get into the reactor. An easy way in is through the cooling towers or, if one goes behind the facility, there is an open door leading inside. If one chooses to go through the cooling towers, this is one of three areas they must fix. Pipes that are emitting smoke are the ones that must be fixed; there are also control panels that can be fixed as well. No materials are required to do so.

Next, through the cooling tower, there should be a door to the generator room. Here many of the consoles are near the yellow generators. Fix those and one can move onto the next stage. Nearby should be the reactor; make the proper repairs (more smokey pipes and consoles). Once that is all completed, one can power up the reactor, ending the event.