It is possible to set up portable operations up to 175; from the nearest mains.

I found I can replace the 20' of #14 power cord that comes on the Home 
Depot cord reel with 175' of #18.  Rated at 10 Amps the reel can still carry 
plenty of power the distance if precautions are followed and it can still fit
under the car seat if needed.  See details about 50% down my Emergency 
power web  page http://aprs.org/FrankenVolt.html and join our emergency 
power discussion group on SolarDIY@groups.io .

I'm giving these 175' reels and a 1 kW inverter to my kids for Xmas for 
backup power.  My son's Chevy-Bolt EV can remote power his apartment 
if the grid goes down for over 64 hours from its large battery.  My daughter's
Prius Plugin-hybrid can provide power for days to a week depending on
gas in the tank. 

Similar to info in my ARRL Pub on emergency power:
 http://aprs.org/Energy-Choices.html

CAUTION:  Such emergency uses are not NEC or UL approved
Bob, WB4APR