SPECIAL Stat: Strength
This is advanced power facility that's capable of producing and storing more power to your vault. It's basically the improved version of the Power Generator. That said, the build and upgrade cost of this facility is quite high and to get the most of it, you'll have to place dwellers with really high Strength stat.
Upgrade | Room | Upgrade Cost 1 | Upgrade Cost 2* | Upgrade Cost 3** |
LV2 | Advanced Reactor | 3000 | 4500 | 6000 |
LV3 | Super Reactor | 9000 | 13500 | 18000 |
*Upgrade Cost 2 = Two merged rooms
**Upgrade Cost 3 = Three merged rooms
Power Production
Level | Room | +Production1 | +Production2* | +Production3** |
LV1 | Nuclear Reactor | 12 | 26 | 57 |
LV2 | Advanced Reactor | +2 | +5 | +11 |
LV3 | Super Reactor | +4 | +8 | +17 |
*Production2 = Two merged rooms
**Production3 = Three merged rooms
Power Storage
Level | Room | +Storage1 | +Storage2* | +Storage3** |
LV1 | Power Generator | 200 | 400 | 600 |
LV2 | Power Station | +100 | +200 | +300 |
LV3 | Power Plant | +100 | +200 | +300 |
*Storage2 = Two merged rooms
**Storage3 = Three merged rooms