Well this year it is going to be worse we are told. Where we live in Northern IL The Utility company invested mega bucks to one bring it into 21st Century and vastly improves reliability and efficiency. But you are correct. In areas that have failed to improve their grids the cost would likely be OUCH!
I lived in my house for 30 years and the first 20 years my January bill went up between $100 to $150 a month. When the improvements were complete the January bill more than half less. We also invested in new LED lightbulbs and light strings for Christmas which also added to major savings after the grid was fixed. We had so many lights for Christmas
. Loved it.