LFTR: http://liquidfluoridethoriumreactor.glerner.com/2012-what-is-a-lftr/
[ Adding more hours of operation just means having a larger or hotter reservoir of the molten salt, rather than adding additional arrays of giant batteries
LFTR: http://liquidfluoridethoriumreactor.glerner.com/2012-what-is-a-lftr/
]
The perfect power source for a Underground Colony.