A Guide To The “That Lucky Old Sun” Quest In Fallout: New Vegas
A Guide To The “That Lucky Old Sun” Quest In Fallout: New Vegas

“That Lucky Old Sun” is a quest in Fallout: New Vegas that revolves around reactivating the Helios One solar power plant. Your choices in this quest lead to several different outcomes for both you the player, as well as to the region of New Vegas. 

A few quick tips before I get into the guide:

  • Bring armor-piercing ammo. Throughout this quest, you’ll get into a few fights with robots. Bringing EMP grenades, armor-piercing ammo, or an energy weapon that deals EMP damage is highly recommended.
  • NCR-controlled area. The quest takes place in an NCR-controlled area. While it’s technically possible to finish the quest while being hostile to the NCR (by wearing a disguise and playing in a specific way), it’s incredibly difficult and not recommended.

Starting the quest

To start the quest, make your way to the Helios One power plant, located North of Novac.

Novac on the world map | Fallout: New Vegas
Novac on the world map

Once there, you’ll see an NCR soldier called Lt. Haggerty. She’ll speak to you as you approach, and ask you to state your business. 

There are many ways of proceeding, but the best 3 are stating that you are working with the NCR, using one of the following 3 options.

  • Informing her that you work with the NCR. Only works if you have an Accepted or higher reputation with the NCR.
  • Saying that you work with the NCR while wearing an NCR disguise.
  • Lying and saying that you work for the NCR. Requires a Speech skill of 35 or more.
Dialogue option that allows you to get past Haggerty | Fallout: New Vegas
Dialogue option that allows you to get past Haggerty

Alternatively, you can also kill the NCR soldiers, but that is not recommended due to it turning most of the NCR soldiers inside of the base hostile. 

However you deal with Haggerty, you’ll be told to go inside and “Find the idiot wearing sunglasses”, also known as “Fantastic”.

To get to him, enter through the main entrance.

Main entrance to the Helios One power plant | Fallout: New Vegas
Main entrance to the Helios One power plant

Once inside, turn to the left, you’ll see a door there. Go through it.

Door to walk through | Fallout: New Vegas
Door to walk through

You’ll enter a corridor. Exit out of it using the next door.

Corridor exit | Fallout: New Vegas
Corridor exit.

Now you’ll see a metal staircase leading to a door on the second floor, go there.

Door that leads to the second floor | Fallout: New Vegas
Door that leads to the second floor

You’ll enter a metal corridor. There’s only a single way to go, so follow the corridor until you reach another metal staircase.

Corridor to follow | Fallout: New Vegas
Corridor to follow

On the metal staircase, you’ll see another hermetic door on the floor below. Go through it.

Hermetic door on the floor below | Fallout: New Vegas
Hermetic door on the floor below

You’ll enter another corridor. At the end, there is yet another hermetic door. Once you’ll walk through it, you’ll see Fantastic.

Fantastic at the end of the hallway | Fallout: New Vegas
Fantastic at the end of the hallway

Speak to Fantastic and exhaust his dialogue options. You’ll eventually learn all you need to know about your task.

Image of Fantastic | Fallout: New Vegas
Image of Fantastic

Once you’re ready, exit the conversation. He’ll give you a computer terminal password. You’ll need the second password too (unless you have a Science skill of 100).

In the next room, you’ll see another scientist, Ignacio Rivas. Speak to him.

Image of Ignacio Rivas | Fallout: New Vegas
Image of Ignacio Rivas

Here, select the following dialogue option to guarantee that you’ll get the terminal password.

  • “My interest in this place is purely scientific.”
“My interest in this place is purely scientific.” | Fallout: New Vegas
  • “I just do what’s necessary to keep the peace.”
“I just do what’s necessary to keep the peace.” | Fallout: New Vegas
  • “The NCR has asked me to help increase the plant’s power output.”
“The NCR has asked me to help increase the plant’s power output.” | Fallout: New Vegas

That should be enough to get the second terminal password out of him.

Now, proceed out of the back door to the next part of the quest. Head out of the back door you can see from Ignacio’s workplace.

Path that leads to the next quest area | Fallout: New Vegas
Path that leads to the next quest area

Unlocking the terminals

You’ll need to unlock 2 terminals that you received the passwords for in the previous section. 

Once you exit out of the back door, you’ll find yourself in an area full of NCR tents and solar panel arrays.

Walk around the area and look for two fenced-off areas. Each one will have a single terminal inside it. 

The first one will be located just down the hill from the entrance. Watch out for the trip wire, bear traps, and landmines that are located inside of the fenced-off area.

Terminal #1 | Fallout: New Vegas
Terminal #1
Terminal dialogue to select | Fallout: New Vegas
Terminal dialogue to select

The second one is located deeper into the camp. It’s also fenced off, but it’s also filled with sandbags. Watch out for the hostile guard dogs inside. The terminal is located inside the shack behind the sandbag barricade.

Terminal #2 | Fallout: New Vegas
Terminal #2
Terminal dialogue to select | Fallout: New Vegas
Terminal dialogue to select

Once you’ve reactivated both of the terminals, you can move on to the next step.

Routing the power

Next, you’ll need to route the power to a destination of choice using a terminal located deep within the robot-patrolled corridors of the Helios One power plant.

Use your quest marker to locate the entrance to the solar collection tower.

Entrance to the collection tower | Fallout: New Vegas
Entrance to the collection tower

Once inside, you’ll see a metal staircase. Right as you reach the bottom, you’ll be attacked by 3 turrets and a Sentry Bot. Sneaking past them is rather difficult, so try to take them out. Make sure to take cover as much as you can to avoid getting attacked by all of the turrets at once.

Room where you’ll be attacked by the robots. Arrow points to where to head after taking care of the bots | Fallout: New Vegas
Room where you’ll be attacked by the robots. Arrow points to where to head after taking care of the bots

Once you’ve dealt with the robots, use the metal walkways that the Sentry Bot was on to reach the next room. The room is on the left end of the walkways. You’ll see a hermetic door in that room. Go through it.

Large hermetic door that leads to the next area | Fallout: New Vegas
Large hermetic door that leads to the next area

Once you walk through that door, you’ll find yourself in a concrete corridor. There’s a high likelihood you’ll see another sentry bot here. If you don’t, he’ll be in the next hallway.

The sloped concrete hallway you’ll enter. The door that leads to the next area is at the end on the left, marked by the arrow | Fallout: New Vegas
The sloped concrete hallway you’ll enter. The door that leads to the next area is at the end on the left, marked by the arrow

To reach the next hallway, go to the end of the corridor and turn left.

Door to proceed through | Fallout: New Vegas
Door to proceed through

In this hallway, take the first door on the left.

The door that leads from the sentry bot’s hallway to the next room | Fallout: New Vegas
The door that leads from the sentry bot’s hallway to the next room

This will lead you to a room with several levels of metal stairs. This room is patrolled by Mr. Gutsies. Kill them or sneak past them.

Direction in which to go. Simply follow the metal stairs down until you reach the bottom | Fallout: New Vegas
Direction in which to go. Simply follow the metal stairs down until you reach the bottom

At the bottom, you’ll see another hermetic door. Walk through.

Hermetic door that allows you to proceed | Fallout: New Vegas
Hermetic door that allows you to proceed

Here, first, turn right and take the door to the left at the end of the corridor.

The door to enter at the end of the corridor | Fallout: New Vegas
The door to enter at the end of the corridor

You’ll find yourself in a C-shaped room. Right around the corner, you’ll see a holotape on the ground. Pick it up.

Holotape from the point of view of the middle of the room | Fallout: New Vegas
Holotape from the point of view of the middle of the room
Close up view of the holotape | Fallout: New Vegas
Close up view of the holotape

Once you have the holotape, retrace your steps to the previous corridor and go the other way. The corridor will split into 2 paths. Here, turn right. At the end of this corridor, there will be a door to your right.

Corridor to go back to | Fallout: New Vegas
Corridor to go back to

This door leads to a room full of Protectrons. There is a laser trip wire that you can jump over or disable with a Repair skill of 85 or above, or with a Science skill of 65 or above.

Room with the protectrons | Fallout: New Vegas
Room with the protectrons

Activating the laser will release all of the Protectrons. Luckily, you can actually shoot the arms of the Protectrons while they are still locked inside their force-field pods.

Once you’ve dealt with the Protectrons, enter the room. You’ll see another door in that room. Go through it.

You’ll enter a room with an elevator, and use the elevator to proceed.

Elevator room. The elevator you need to take is marked out by the arrow | Fallout: New Vegas
Elevator room. The elevator you need to take is marked out by the arrow

You’ll enter a room with a metal staircase that leads to another room above you. Go there and search the room for a deactivated Mr. Handy named PYTHON.

The room after the elevator. The room where PYTHON is located is marked out by the arrow | Fallout: New Vegas
The room after the elevator. The room where PYTHON is located is marked out by the arrow
Image of deactivated PYTHON | Fallout: New Vegas
Image of deactivated PYTHON

Interact with PYTHON and select the “Insert Poseidon Energy ID Card.” option.

Correct menu option to select | Fallout: New Vegas
Correct menu option to select

Follow PYTHON back down to the first floor. He’ll fix a few wires and then deactivate again. This will allow you to interact with the terminal that the wires are connected to.

Terminal that PYTHON will repair. Interact with it | Fallout: New Vegas
Terminal that PYTHON will repair. Interact with it

Interact with the terminal and select the “Configure Power Grid” option.

Correct option in the terminal | Fallout: New Vegas
Correct option in the terminal

You’ll be presented with 5 options.

  1. McCarran and Las Vegas Strip
  2. Fremont and Westside
  3. Full Region
  4. ARCHIMEDES II
  5. Full Region (Emergency Output Level)

Each one will have different benefits for you.

  • Option 1 will give you a lot of NCR reputation.
  • Option 2 will give you the most Followers of the Apocalypse reputation.
  • Option 3 will give you some Followers of the Apocalypse reputation, as well as several rewards from Ignacio Rivas when you talk to him at the end of the quest, including an otherwise unobtainable Big Book of Science.
  • Option 4 will allow you to use Euclid’s C-Finder to fire laser air strikes on command once per day. To acquire Euclid’s C-Finder, follow this guide.
  • Option 5 will overload the powerplant and result in you getting no reputation with any faction and only a very small reward from Ignacio Rivas.

Pick whichever option suits you best, select it, and move on to the final part of the quest.

Options for configuring the power grid | Fallout: New Vegas
Options for configuring the power grid

Finishing the quest

Go back to the room where you found PYTHON and go through the hermetic door that’s opposite the entrance.

Exit to the tower | Fallout: New Vegas
Exit to the tower

You’ll find yourself at the top of the Helios One tower. Walk down the metal walkway to the level below.

Metal walkway leading to the level below | Fallout: New Vegas
Metal walkway leading to the level below

You’ll see a control panel there. Interact with it between 6 AM and 6 PM to turn the Helios One power plant back on.

Control panel to interact with | Fallout: New Vegas
Control panel to interact with

Depending on which option you picked, you’ll be given the objective of talking to either Ignacio Rivas or to Fantastic. Speaking to either and telling them that you reactivated the power plant will finish the quest.