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Montana-Dakota Utilities Co (South Dakota) · Time-of-Use

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.

12 AM6 AMnoon6 PM11 PM
Peak Mid-Peak

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.

Are you on the cheapest Montana-Dakota Utilities Co (South Dakota) plan?

Ask the free Energy Advisor about Rate 16 Optional Time-Of-Day RES, or upload a bill right here to check your real usage against every Montana-Dakota Utilities Co (South Dakota) plan.

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Data last updated June 18, 2026. Compiled by Energy Advisor from published utility tariffs.