I’m sure it’s all gold plated
Biggest house generator I could find with a quick search, 150kw, which is a HUGE amount of power even for a mansion!
Even at that only costs 38k
https://www.electricgeneratorsdirect.com/Generac-Protector-RG15090GNAC-Standby-Generator/p113834.html?utm_term=catch113834&utm_source=bing&utm_medium=cpc&utm_campaign=catchbingpla&utm_content=bing-catch113834&msclkid=a4c4f75d6ce6165b08c894a34ec4c9e0&;