Quoted from TDK-WPG:The per kWh price is interesting, but I’m curious about your annual kWh usage at those higher prices, such as in California.
We used just over 35,000 kWh for the last 12 months of heating and cooling, for example.
It's very hard to generalize utility costs in California because there are so many variables, like most things you have to look deeper.
For example closer to the coast you don't need much air conditioning or heating at all, our home didn't even come with air conditioning. Additionally just like with taxes, electric is charged on a progressive scale that ramps up. So like with taxes where middle class and below pay less taxes here compared to other states like Texas, likewise with electric if you don't use much you don't pay much. Costs are skewed to the top tiers. Monthly bills of < $50 are common in my circle.
Another example is getting solar and battery storage is easy here which not only can offset the costs of electric, it can also be a profit source. We plan on adding Tesla Powerwalls to our solar setup and join the states virtual grid so we will able to sell electric to the grid at $2/kW during peak loads. To my knowledge no other state offers this.
So while this is a quick summary of rates here:
https://paylesspower.com/blog/electric-rates-by-state/
...it really doesn't tell the full story. I lived in Canada and while on paper utilities are cheaper there, in reality we pay far less in California than we ever did in Canada just because of the harsh weather up north and less ways for people monetize electric. It's a similar story compared to the other states we lived in the USA.
TL:DR: Costs will depend on your circumstance, how much you take advantage of the states perks and/or which part of the state you live in.