Local repeaters with emergency power

[Steve K6SRS]

I'm trying to make a short list of local VHF repeaters (UHF as well would be good) that will still be on the air if we have a major fire or earthquake and loose primary power and cell sites.  

I've looked at all the current repeater handbooks and on-line repeater guides and it seems that none of them list if they have emergency power anymore.  That used to be in every listing, but no more.  

Does anyone have such a list, or know of any specific repeaters that have batteries or a generator?

Do our ROARS repeaters have emergency power?  If so, likely how long will they last?