I'm not sure how the US average residential retail number is weighted, but let's take it at face value at $0.1619/KWh. [1]
Baseline allocations are very small (around San Francisco--territory T--you get 177 KWh/mo in the summer and 234 KWh/mo in the winter). Marginal consumption is almost guaranteed to be in the second tier. Under the old default E-1 plan, that means your marginal rate is currently $0.5257/KWh. [2] This is in excess of 3x the national retail average.
But E-1 isn't the default plan any more. These days that's TOU-C. It's more difficult to come up with clean comparisons with a time-of-use plan. To keep it simple, I'll just average the rates together. The variation across time and season is not huge, so it should be good-enough approximation. Under that plan your marginal rate is around $0.5388/KWh. [3] This is also in excess of 3x the national retail average.
What about at the other end of the state? I don't know as much about baselines around San Diego since I don't live there. If we use the same assumptions for SDG&E as we did for PG&E, the marginal KWh there comes out to $0.4833/KWh. [4] This is almost exactly 3x the national average retail rate.
And if you're somewhere between these two utilities and on SCE? The same assumptions put you at $0.43/KWh. [5] So you're just barely under 3x the national average.
Baseline allocations are very small (around San Francisco--territory T--you get 177 KWh/mo in the summer and 234 KWh/mo in the winter). Marginal consumption is almost guaranteed to be in the second tier. Under the old default E-1 plan, that means your marginal rate is currently $0.5257/KWh. [2] This is in excess of 3x the national retail average.
But E-1 isn't the default plan any more. These days that's TOU-C. It's more difficult to come up with clean comparisons with a time-of-use plan. To keep it simple, I'll just average the rates together. The variation across time and season is not huge, so it should be good-enough approximation. Under that plan your marginal rate is around $0.5388/KWh. [3] This is also in excess of 3x the national retail average.
What about at the other end of the state? I don't know as much about baselines around San Diego since I don't live there. If we use the same assumptions for SDG&E as we did for PG&E, the marginal KWh there comes out to $0.4833/KWh. [4] This is almost exactly 3x the national average retail rate.
And if you're somewhere between these two utilities and on SCE? The same assumptions put you at $0.43/KWh. [5] So you're just barely under 3x the national average.
[1] https://www.eia.gov/electricity/monthly/epm_table_grapher.ph...
[2] https://www.pge.com/tariffs/assets/pdf/tariffbook/ELEC_SCHED...
[3] https://www.pge.com/tariffs/assets/pdf/tariffbook/ELEC_SCHED...
[4] https://www.sdge.com/sites/default/files/regulatory/1-1-24%2...
[5] https://www.sce.com/residential/rates/Standard-Residential-R...