predator generators apparently 90% quieter

https://www.harborfreight.com/generators-engines/generators/over-8000-watt-generators.html

PREDATOR 13,000 Watt Tri-Fuel Portable Generator with Remote Start and CO SECURE® Technology, EPA $1200 runs on natural gas, propane or gasoline

https://www.harborfreight.com/5000-watt-dual-fuel-super-quiet-inverter-generator-with-remote-start-and-co-secure-technology-epa-71367.html – 50kg $1100 – Good price to experiment with