I have pondered this myself. What I'm hung up on is how electric motor power compares to chainsaw power in a real world application. How big of an electric motor would be needed to pull a 60+" bar and hang with a 088/084/3120? I dunno....
Down a 12Ga. extension cord, at 110V your only going to get about 3HP or 120V X 20A = 2400 Watts,,,, 2400 / 746 = 3.217 HP an MS-260 has 2.4K watts or 3.2HP (my 3500W truck-mounted generator has 20A breakers, but at that, a 12G cord dose get warm) Stihl only recommends 50' of 12G cord for there 1.7W 2.3HP
electric chainsaw
220V moters would help, but your starting to limit you generators that could be used, and still dang heavy,,,, to get the same snort as even an MS-660 , your not going to cut far from the truck the generator is in. You would need a 5.5K 220V generator 7HP 220V motors are just plain heavy. 3-phase would help, but your pricing most out of the ball-game.
I'm thinking it will take awhile for an electric motor to make the power a CSM will give.
Band-saw mills have a lot of frame compared to a Bar-chain , if a light BSB could be made to really sing, aluminum frame, maybe a rig could be designed?