Power generator

The power generator is a room built in Fallout Shelter.

Overview
The power generator is based upon dwellers' Strength stat and allows them to create power for a vault. It is one of the facilities available at the start of the game and one of the preconstructed facilities if one doesn't skip the tutorial.

Power is required for any room (excluding elevators and the vault door) to function. Without enough power, other rooms will stop producing resources/working, starting with the rooms furthest from the power sources.

Power generation
To increase the speed at which power is generated, place dwellers with better Strength in this room.

The power generator room, like other rooms, gains a production and upgrade cost bonus from being connected to another room of the same type and level. Upgrade costs will be 25% cheaper for a double room and about 34% cheaper when upgrading a triple room vs upgrading 3 single rooms.

Cost
Before the release of the Android version, the values were as follows: