I can add to this request. My power company is NS Power (owned by Emera Corp.) in Nova Scotia, Canada. Their time-of-day rate schedule is:
NS Power ToD rates
H: 19.961 ¢/kWh (high rate)
M: 15.603 ¢/kWh (medium)
L: 8.676 ¢/kWh (low rate
Mar–Nov (Spring/Summer/Fall—9 mo)
Hour M Tu W Th F Sa Su
07-23 M M M M M L L
23-07 L L L L L L L
Dec–Feb (Winter—3 mo)
Hour M Tu W Th F Sa Su
07-12 H H H H H L L
12-16 M M M M M L L
16-23 H H H H H L L
23-07 L L L L L L L
This will give you one data point for the complexity of supporting time-of-day rates. Unless this is implemented I cannot get accurate billing.
Thanks for your consideration.