“The longer-term implications are more problematic. If you're a California resident, you won't be able to replace a failing RV generator or upgrade to a more powerful unit. Parts may become more difficult (and expensive) to obtain, as will service and repairs. And even before the 2024 regulations come into effect, California RV owners should think twice before investing in generator technology, knowing that its long-term prospects are bleak.”
“The ban may also impact how you use your RV. The decrease in generator use promises to create a scramble for shore power-equipped campsites already scarce in many regions.”
https://gopowersolar.com/california-generator-ban/