Arizona does this (see Palo Verde Generating Station, the largest power plant in the US by generation) and I benefit with $0.05230 per kWh off peak (off peak is 8 pm - 3 pm on weekdays, all day on weekends and 10 holidays).
On the TOU plan in NV, weekdays in June thru Sept, from 1PM to 7PM, it's ~0.45/kWh -- but rest of the time it's under 6c/kWh -- comparable [or less] than your rate.
Hard to believe we haven't figured out efficient, reliable, & redundant long-distance electricity transmission at this point.
I generated almost 100kWh today & have used ~half that; it sure seems like transmission is almost as big of an issue as storage.