This thread reminded me The GT235E variant, built in 2002 and 2003,(JD) (garden tractor) offered an on-board generator system that provided continuous 1000 Watt power at 120 volts. Big difference though from 1 kw to 10kw .
Heck, I have to gear down my 2000 rpm front PTO on my lawn mower to run a 540 PTO alternator. I/you could run an 1800 rpm unit direct with a front mower tractor.View attachment 593852