What are Montana-Dakota Utilities Co (South Dakota) Rate 16 Optional Time-Of-Day RES peak hours and rates?
Rate 16 Optional Time-Of-Day RES from Montana-Dakota Utilities Co (South Dakota) is a time-of-use plan: electricity costs the most during peak hours (12 p.m.–9 p.m.) at about $0.15/kWh and the least off-peak at about $0.08/kWh. Shifting heavy usage out of the peak window lowers the bill.
Peak window
12 p.m.–9 p.m.
Peak price
15¢/kWh
Off-peak price
8¢/kWh
Fixed charge
$16.73/mo
The Rate 16 Optional Time-Of-Day RES day, hour by hour
Hover any hour for its exact price. Toggle season and day type.
Winter
Jan–May, Oct–Dec
| Period | Hours | $/kWh |
|---|---|---|
| Peak | 12 p.m.–9 p.m. | $0.12 |
| Mid-Peak | 9 p.m.–12 p.m. | $0.08 |
Summer
Jun–Sep
| Period | Hours | $/kWh |
|---|---|---|
| Peak | 12 p.m.–9 p.m. | $0.15 |
| Mid-Peak | 9 p.m.–12 p.m. | $0.08 |
Frequently asked questions
What are Montana-Dakota Utilities Co (South Dakota) Rate 16 Optional Time-Of-Day RES peak hours and rates? +
Rate 16 Optional Time-Of-Day RES from Montana-Dakota Utilities Co (South Dakota) is a time-of-use plan: electricity costs the most during peak hours (12 p.m.–9 p.m.) at about $0.15/kWh and the least off-peak at about $0.08/kWh. Shifting heavy usage out of the peak window lowers the bill.
When is the cheapest time to use electricity on Rate 16 Optional Time-Of-Day RES? +
The cheapest electricity on Montana-Dakota Utilities Co (South Dakota) Rate 16 Optional Time-Of-Day RES is during off-peak hours (9 p.m.–12 p.m.), at about 8¢/kWh. Shift EV charging, laundry, dishwashing, and pre-cooling into these hours to pay the least.
How much more is peak vs off-peak on Rate 16 Optional Time-Of-Day RES? +
Peak power costs about 15¢/kWh versus 8¢/kWh off-peak — a difference of about 6¢/kWh. Running a 5 kWh load (a load of laundry plus dishwasher) off-peak instead of at peak saves roughly $0.32.
Who offers Rate 16 Optional Time-Of-Day RES? +
Rate 16 Optional Time-Of-Day RES is a residential electricity plan from Montana-Dakota Utilities Co (South Dakota) (Montana-Dakota Utilities Co (South Dakota)).
About this data
Compiled by Optiwatt from the OpenEI U.S. Utility Rate Database (5925ed285457a3b126de90e0). Representative — verify exact prices on your Montana-Dakota Utilities Co (South Dakota) bill or tariff sheet.
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Data last updated June 18, 2026. Compiled by Energy Advisor from published utility tariffs.