It's not that simple. The power here in PG&E land is tiered. Completely Byzantine and indecipherable, and the rates change every two weeks.
Baseline usage is defined as 370 kwh. Is that enough to run a house? Anyway, here is the table from the two two-week periods from June, all kwh:
Up to baseline is $0.12
100-130% of baseline is $0.14
131-200% of baseline is $0.30
201-300% of baseline is $0.37
over 300% of baseline is $0.37
My kwh in the same tiers respectively:
270 (2%)
111 (1%)
259 (4%)
370 (7%)
4712 (86%)
Bottom line, my average usage for June was $0.35.