Fusion Core Locations - Fallout 4 Guide - IGN (2024)

Fusion Cores are used to fuel your Power Armor. Once their energy supply has been depleted, they must be disposed of, and they cannot be recharged. It's very important to have multiple Fusion Cores on hand when using any sort of Power Armor. This guide provides a list of known Fusion Core locations in Fallout 4.

Fusion Core Locations in Fallout 4

Need help finding a particular Fusion Core location in Fallout 4? Click the links below to jump to...

• Fusion Core - BADTFL Regional Office
• Fusion Core - Sanctuary
• Fusion Core - Museum of Freedom
• Fusion Core - USAF Satellite Station Olivia
• Fusion Core - Robotic Disposal Ground
• Fusion Core - Starlight Drive-In
• Fusion Core - Mystic Pines
• Fusion Core 1 - ArcJet Systems
• Fusion Core 2 - ArcJet Systems
• Fusion Core - Atlantic Offices
• Fusion Core - Boston Airport
• #Fusion Core - Boston Mayoral Shelter Fusion Core - Boston Mayoral Shelter
• Fusion Core - Cambridge Polymer Labs
• Fusion Core - The Castle Tunnels
• Fusion Core - Concord Civic Access
• Fusion Core - Coastal Hideout
• Fusion Core - Factory
• Fusion Core - Federal Ration Stockpile 1
• Fusion Core - Federal Ration Stockpile 2
• Fusion Core - Fort Hagen
• Fusion Core 1 - The Dig
• Fusion Core 2 - The Dig
• Fusion Core 3 and 4 - The Dig
• Fusion Core 1 and 2 - Greenetech Genetics
• Fusion Core 3 - Greenetech Genetics
• Fusion Core - Gunners Plaza
• Fusion Core - Public Works Maintenace Area
• Fusion Core - Old Robotics
• Fusion Core - Kendall Hospital
• Fusion Core 1 - Four Leaf Fishpacking Plant
• Fusion Core 2 - Four Leaf Fishpacking Plant
• Fusion Core 3 - Four Leaf Fishpacking Plant
• Fusion Core - Longneck Lukowski’s Cannery
• Fusion Core - Malden Center
• Fusion Core - Malden Drainage
• Fusion Core - Mass Fusion Containment Center
• Fusion Core - Massachusetts State House
• Fusion Core - Medford Memorial Hospital
• Fusion Core - Quincy
• Fusion Core - Railroad HQ Escape Tunnel
• Fusion Core - Recon bunker Theta
• Fusion Core - Roadside Pines Motel
• Fusion Core - South Boston Military Checkpoint
• Fusion Core - Suffolk County Charter School
• Fusion Core - Super Duper Mart
• Fusion Core 1 - The Switchboard
• Fusion Core 2 - The Switchboard
• Fusion Core - Vitale Pumphouse
• Fusion Core - Wilson Atomatoys corporate HQ
• Fusion Core - Wilson Atomatoys Factory
• Fusion Core - Wreck of the FMS Northern Star
• Fusion Core 1 Yangtze
• Fusion Core 2 Yangtze

Fusion Core - BADTFL Regional Office

This core can be found directly across from the BADTFL Regional Office; you'll be able to see it looking up from the front door. There's a stairwell behind the building its on that will lead you up to the generator.

Fusion Core - Sanctuary

The first core is hidden in this cave directly beneath the Red Rocket outside Sanctuary. The cave is protected by Molerats. You’ll find the core on the rightmost of the three branches after entering the cave, on the floor next to the ruined reactor. Grab it quick...this area is radioactive.

Fusion Core - Museum of Freedom

Another core is located in the basem*nt of the Museum of Freedom in Concord south of the Red Rocket Truck Stop. It’s easy to get, just follow the collapsed floor at the bottom of the huge main stairwell in the big open room. The core is behind a fence, but an easy terminal hack will open it. Preston Garvey and the Minutemen are in the room above, and you can use the core to help them out and claim a suit of Power Armor for yourself.

Fusion Core - USAF Satellite Station Olivia

You’ll find another core close to Sanctuary east of the town in the basem*nt of the USAF Satellite Station Olivia dominated by the huge satellite dish. The core is located in the large open power room in the basem*nt plugged into a base station.

Fusion Core - Robotic Disposal Ground

Another very easy core is located near the robotic disposal ground near the satellite station. The core is located just outside the building, in a large green box next to the robotic body lounging outside the door.

Fusion Core - Starlight Drive-In

A fifth core is easily accessible on a shelf in the larger of the two storage rooms behind the screen at the Starlight Drive-In.

Fusion Core - Mystic Pines

A sixth core is hidden in the basem*nt of Mystic Pines just south of Rotten Landfill. The core is located in the small basem*nt behind a locked door.

Fusion Core 1 - ArcJet Systems

Before you go into ArcJet systems, head north and climb the hill to get an easy Core outside of a shack- just mind the frag mine!

Fusion Core 2 - ArcJet Systems

The second Fusion Core is at the bottom of ArcJet- After unlocking the elevator, you’ll find the Fusion Core off to the left, in the Rocket Silo.

Fusion Core - Atlantic Offices

After the next-gen update, this formerly abandoned building is now home to fierce Enclave soldiers. On the roof of the building is the Fusion Core- along with a Tesla Cannon if you kill an Enclave soldier.

Fusion Core - Boston Airport

Once you’ve completed the ‘Reunions’ story quest, you can head to the Boston Airport and find this Fusion Core on the ground floor, behind an iron fence. Enter through the hole in the wall and it will be on your left- along with a pack of Feral Ghouls.

Fusion Core - Boston Mayoral Shelter

After unlocking the shelter using the terminal in the nearby guardpost, you can find this Fusion Core near the bottom of the shelter. After heading downstairs, you’ll find a basketball court; the Fusion Core can be found in a room off to the side, with a ‘Keep out’ sign above it. Be wary of exploring further, as a scripted Deathclaw encounter will spawn if you push further into the tunnels.

Fusion Core - Cambridge Polymer Labs

This is a tricky Fusion Core to acquire; you’ll have to either complete the experiment in the ‘Cambridge Polymer Labs’ quest, or unlock a Master level lock. Regardless of how you go about it, the Fusion Core will be in a display case in a shelter, though don’t forget to grab the magazine on the desk as well!

Fusion Core - The Castle Tunnels

If you’re siding with the Minutemen, you can pick up this Fusion Core in the Castle, beneath the ground floor. You’ll see this Fusion Core after taking out the Machinegun Turret nearby, and don’t forget to collect two more by destroying Sarge, the Sentry Bot further in the tunnels.

Fusion Core - Concord Civic Access

You can collect this Fusion Core shortly after rescuing the settlers in Concord. After jumping into the hole created by the Deathclaw and following the waterway to the end, you’ll know you're heading in the right direction when you see a Mirelurk. Beyond the leveled creature, the Fusion Core and a Vault-Tec Lunchbox will be in the dark corner on the left side.

Fusion Core - Coastal Hideout

This hidden Fusion Core can be found to the northeast of the Coastal Cottage, albeit possibly being guarded by a Mirelurk Queen. You’ll find the Fusion Core in front of you once you enter, albeit protected by Feral Ghouls.

Fusion Core - Factory

Another unmarked location can yield a Fusion Core, located between the Four Leaf Fishpacking Plant and Andrew Station. Once you walk inside, you’ll have to kill a few Bloodbugs and Radroaches, but once they’re out of the way, you can find the Fusion Core near the stairs.

Fusion Core - Federal Ration Stockpile 1

There are two Fusion Cores tucked away at the Federal Ration Stockpile, protected by a group of Raiders. The first Fusion Core can be found at the very back of the outpost, behind one of the few buildings not made of wood.

Fusion Core - Federal Ration Stockpile 2

The second Fusion Core can be found inside the building itself. Turn right into the first door and follow it to a flooded room. Drop down one floor and the Fusion Core will be behind a locked Novice door.

Fusion Core - Fort Hagen

The last building you’ll enter during the quest Reunions, you can grab this Fusion Core shortly after entering the Command Center. Once you’ve gone down the first set of stairs, turn right, and then right again. The Fusion Core will be inside a generator.

Fusion Core 1 - The Dig

A whopping four Fusion Cores can be found during the side quest 'The Big Dig’, located in Goodneighor. The first Fusion Core can be located when Sonia blasts open the first wall of dirt, on the left side of the following room.

Fusion Core 2 - The Dig

The second Fusion Core can be found further in, immediately after exiting the red pipe. Turn left, and you’ll see a locked door, holding the Core inside a generator.

Fusion Core 3 and 4 - The Dig

The last two Fusion Cores can be found in the strongroom, but are ‘’only accessible if you side with Bobbi No-Nose at the end of the quest.’’ After looting the key from one of the named NPC’s bodies, you can unlock Hanco*ck’s Storeroom and claim the last two Fusion Cores.

Fusion Core 1 and 2 - Greenetech Genetics

These Fusion Cores are locked behind the main story quest ‘Hunter/Hunted’ and can only be accessed by reaching the top floor of Greenetech Genetics. Once you take the elevator to the top floor, you can find these behind a Master level locked terminal as soon as you step out.

Fusion Core 3 - Greenetech Genetics

The 3rd Fusion Core is very close to the ones you just picked up. Beyond the door you just unlocked, there is another door next to the stairwell with a more reasonable Advanced lock, along with a Fusion Core on a desk.

Fusion Core - Gunners Plaza

Located on the roof at the very top of the Gunners Plaza building, you’ll have to clear out a large detachment of Gunners to reach the Fusion Core’s generator. On your way out, unlock the Novice door also located on the roof, as there’s a chance the footlockers will have extra Fusion Cores.

Fusion Core - Public Works Maintenace Area

This Fusion Core is only accessible provided that you’re completing the quest ‘The Nuclear Option’ under the Minutemen Faction. After entering the keypad, swim through the pipe on your left and follow the CIT pipe until you reach the locked door on your left. The Fusion Core will be behind another locked door inside that room.

Fusion Core - Old Robotics

Similar to the above, this Fusion Core is further along the quest ‘The Nuclear Option’, shortly after dropping into the circular hatch. The Fusion Core will be along the wall, inside a generator.

Fusion Core - Kendall Hospital

Located in the basem*nt, you will have to take Kendall Hospital’s elevator up, then the collapsed floor down to find a large open room. Your Fusion Core will be at the very bottom, but a Deathclaw will be guarding it.

Fusion Core 1 - Four Leaf Fishpacking Plant

Three cores are hidden inside this fishpacking plant, along with packs of Feral Ghouls. The first Core can be found as soon as you enter the front door by hanging a left, and then another to reach the first Fusion Core in a generator.

Fusion Core 2 - Four Leaf Fishpacking Plant

Another Fusion Core can be found from the right side of the entrance instead of the left- beyond a locked novice terminal is another Fusion Core next to a Protectron.

Fusion Core 3 - Four Leaf Fishpacking Plant

The last Fusion Core is on top of Four Leaf itself. The east side of the building will let you climb to the roof, and the Fusion Core will be inside a generator on the other end.

Fusion Core - Longneck Lukowski’s Cannery

This Fusion Core will require you to enter Lukowski’s basem*nt using the elevator in the main cannery, and then follow the sewer to the end. Once you’re able to go up the stairs onto the railways, the right path in the fork will hold a Fusion Core inside a generator.

Fusion Core - Malden Center

Beyond the subway filled with Synths, you’ll find an elevator at the other end that will take you down to the basem*nt. There are three Fusion Cores up for grabs, all next to each other: One in the generator, one in the cardboard box, and another on the ground in front of the generator.

Fusion Core - Malden Drainage

Though you can see the generator as soon as you enter Malden Drainage on the right side, there are no stairs leading to it. Instead, run along the pipes at the other end to reach both the generator and a steamer trunk.

Fusion Core - Mass Fusion Containment Center

To access the locked gate hiding this Fusion Core, you’ll need to hack the Novice Terminal on the floor directly above it. Once the gate is open, the Fusion Core will be in a generator in the back of the room.

Fusion Core - Massachusetts State House

A Fusion Core can be found deep in this Mirelurk-Infested building. You’ll need to go up the collapsed stairwell on your left, and then follow the dilapidated hallways until you reach the basem*nt area. After another round of Mirelurks, proceed through the basem*nt and you’ll find a generator beyond a large group of Mirelurk eggs.

Fusion Core - Medford Memorial Hospital

From the main entrance, the hallway you want will be on the floor above, directly to your left. Keep that in mind as you move up the stairs on your right, and then enter the hallway you saw from the left. The generator can be found in the last room on the left.

Fusion Core - Quincy

In a church in the Quincy Ruins, there’s an easy Fusion Core- it’s inside the box next to the terminal inside the church.

Fusion Core - Railroad HQ Escape Tunnel

This Fusion Core is inside the escape tunnel at the Railroad’s headquarters, so you’ll need to follow the Freedom Trail to gain access. Once you do, this Fusion Core is in the tunnel behind an Expert terminal.

Fusion Core - Recon bunker Theta

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To get this Fusion Core, you must complete the side quest ‘The Lost Patrol’. At the quest's end, you’ll find this Fusion Core in the generator behind the NPC.

Fusion Core - Roadside Pines Motel

Protected by a few sparse raiders, this Fusion Core is at the back of the hotel, behind an unlocked gate.

Fusion Core - South Boston Military Checkpoint

This Fusion Core is not technically in the MIlitary Checkpoint; instead, it’s slightly off to the east, under the elevated freeway in a generator.

Fusion Core - Suffolk County Charter School

Like many of the others, this Fusion Core can be found in this charter school’s basem*nt. Take the hallway on the left to the end until you reach the hole in the ground. Beyond the winding shelves and Feral Ghouls is the Fusion Core, furthest left in the group of generators.

Fusion Core - Super Duper Mart

The Fusion Core for the Super Duper Mart can be found at the back of the store, though the entire building is positively choked in Feral Ghouls, just like the Suffolk County Charter School. Follow the wall on the right when you walk in, and enter the second door. The Fusion Core is behind the second door on the left, and you can leave using the stairs across from the generator when you pick it up.

Fusion Core 1 - The Switchboard

To access these Fusion Cores, you’ll have to side with the Railroad to begin the quest ‘Tradecraft’. Once inside, follow Deacon’s orders and push further in until you hit the room with desks- and the body of Songbird in the center. There will be a generator on your left with a Fusion Core.

Fusion Core 2 - The Switchboard

The second Fusion Core can be grabbed on your way out of the Switchboard- before you power up the Elevator, open the Advanced door on the side and pick up the Fusion Core next to the toolbox.

Fusion Core - Vitale Pumphouse

If you find yourself near Hub City Auto Wreckers, you can swing south for the Vitale Pumphouse; you’ll find a steamer trunk, a unique weapon, and a Fusion Core inside a generator. To enter the generator room, the code is 10-4-5-1.

Fusion Core - Wilson Atomatoys corporate HQ

This Fusion Core is a quick grab from the entrance of Wilson Atomatoys- from the basem*nt entrance, turn left and then right and you’ll be face-to-face with the Fusion Core.

Fusion Core - Wilson Atomatoys Factory

Guarded by Super Mutants, you don’t need to engage any of them to pick up this Fusion Core. It’s tucked behind the building in a generator, and you can grab it and leave without wasting any resources on the Mutants or their deadly Suiciders.

Fusion Core - Wreck of the FMS Northern Star

Before you begin exploring the FMS Northern Star(and meet its unique Norwegian raiders), you can take the Fusion Core from the bottom of the ship right away. You should be able to see the generator from the large opening at the bottom

Fusion Core 1 - Yangtze

The final Fallout 4 Fusion Cores can be found in the Yangtze submarine. The first one can be found in the lowest level of the engine room, submerged in a box.

Fusion Core 2 - Yangtze

The last Fusion Core is in the Crew Quarters, where all of the beds are located. You’ll find a skeleton in the back of the room near a bottle of Nuka-Cola Quantum; near the body is an open footlocker with the last Fusion Core.

Tired of looking for more Fusion Cores? Why not check out our Console Commands and Cheat Codes guide, which will let you spawn your own Fusion Cores into the game.