Most of the homes older than 30 years out here in the West only have 100amp service. The utility will charge you an arm and a left one to upgrade the transformer. Here in Nevada they may even charge you a portion of the cost of upgrading the grid back to and including the power plant - that is rare but they have tried.
As electric demand continues to climb there will obviously be more demand placed on power plants and the electric grid which can only be supplied by hydrocarbons such as natural gas. But regardless, demand will be difficult probably impossible to meet. So, we will need to fend for ourselves. Thereby, I’m installing a https://www.generac.com/