It's nowhere near the price differential that wholesale is, though. Last I checked, PG&E charged 62c/kwh at peak, and 52c/kwh off-peak. Back in 2020 it was 29c/kwh peak and 22c/kwh off-peak. That's roughly a 25% difference, but the actual wholesale price is off by several factors.
While the daytime rates are less expensive than the evening peak rates, both are very expensive compared to just about anywhere else.