for inner city work, all you need is a 220v outlet, 3ph would be better but not necessary, to reiterate recharging doesn't take anymore power then a clothes dryer. Most home sights have a temporary power connection as it is, major construction sites as well,All well and good but what realistic purpose does it serve?
Setting up the charging station will cost more time, labor and quite possibly more carbon than burning diesel.
Heavy mining shovels are one thing but they spend their life in a single reasonably small area. A 200 class is going to need serious infrastructure to recharge in a timely manner. Here that machine could be on three different job sites in a single day.
As for building a charging station... its an inverter, nothing more bout the size of a carry on, not like you need to build a pad, dig for underground power, and spend a week waiting on inspectors to sign off on it, you just plug the damn thing into a 220v outlet and it starts working.
for the too long too stupid to read, a Tesla has 400hp at the wheels, a 200class diesel excavator only has about 180hp... the excavator has larger batteries, but will still do a 10 hr day on a full charge, and like the Teslas, Rivians, etc takes about 8 hours to fully charge, 20 mins at a commercial "rapid" charger, which are notably different
As for in the boonies, there are commercially available solar charging stations, I believe I covered that in the original series of posts, not to mention that Edison is making most of their income right now with Solar Light towers, which have enough capacity to recharge other equipment, and can be expanded.
Folks get hung up on the little falsehoods, yes you need outside power to recharge, no its not some extreme draw on the grid despite what certain conservative (read oil funded) news outlets continue to claim, is it cleaner then diesel... that should be self evident.
OH but the oil/gas/coal fired powerstations blah frickity blah blah, 90% of power here in WA is hydro or wind/solar (where I live its 99% renewable grid power) And frankly outside of the dumb ass holdouts like Texas, fossil fuels are on the way out for grid power anyway.