Using just the resources that are currently commercially deployable; 31 of our 51 states, or 60% of US states could get 100% of their electricity from renewable sources in-state, and another 14 percent could generate 75 percent of their electricity in-state, according to a paper published by New Rules Project that focuses on the potential for local production.
In some ways, very local; which actually makes this a conservative estimate. For example:
Solar. The New Rules Project study looked only rooftop solar potential, and not the obviously far larger utility-scale solar potential as the idea was to see what could be done with existing resources only in each state, and not adding transmission lines.
(Strangely; the authors inexplicably omit waste biomass or waste fueled electricity, like from landfill gas, cow power and sewage sludge as sources for producing electricity, that has tremendous potential. There is no peak poop, after all. )
But it still has a wealth of detailed data (2007), well presented in these graphs showing the relative resource for each state for
Pg 2 Wind
Pg 3 Off-shore Wind
Pg 4 Micro Hydro
Pg 5 Combined Heat & Power
Pg 6 Geothermal
Pg 7 EGS
Pg 8 Negawatts
Pg 9 Transmission Potential (my notes)
Pg 10 Relative Costs