Don't believe me, just research your bill.

I paid an average of $0.31 per kWh last month with SCE (which is on the low side, because a lot of that is charging my car, which I have setup to only charge during off-peak). I see under $0.06 per kWh of Non Bypassable Charges. The word "tax" does not appear on the bill, except in a notice about raising rates which mentions a loss (with the word "after-tax" appended to the amount of the loss) incurred by SCE.

I’m saying San Jose PGE is more than half what Santa Clara pays.

So even if half is tax, it’s still a lot more. And, half of Santa Clara’s would also be tax.