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Montana-Dakota Utilities (North Dakota) rates

MDU has 2 residential plans modelled here. For a typical North Dakota home using 1,075 kWh a month, the cheapest is Rate 16, at about $136 a month.

Investor-owned 79,354 residential customers (EIA-861, 2024) Tariffs checked September 28, 2026

Typical all-in priceRate 16

01234567890123456789.0123456789¢/kWh
Rate 10$139/mo
Rate 16$136/mo

MDU's rates include a 26.1% interim increase from September 1, 2026, subject to refund while its rate case is decided.

Residential plans

PlanTypeFixed/moJuly pricesJanuary pricesJuly weekday windows
Rate 10
Residential Electric Service
Tiered $19.23 12.1¢ all hours 12.1¢ 0–750 kWh · 8.4¢ over 750 kWh None
Rate 16
Optional Time-of-Day Residential Service
Time-of-use $30.36 Off-peak 10.2¢ · Peak 14.0¢ Off-peak 8.3¢ · Peak 12.1¢ Peak noon–8 pm

Rate 16: price by hour

July weekday. Summer pricing Jun–Sep; winter Oct–May.

Off-peakPeak
10.2¢14.0¢10.2¢12a3a6a9a12p3p6p9p12a

Charging an EV on MDU

1,000 miles a month in a Tesla Model Y Long Range AWD (275 kWh from the wall, EPA 27.5 kWh/100 mi) at 7.2 kW, added to a typical North Dakota home’s use, on each plan’s cheapest start hour versus plugging in at 6 pm. Averaged over the year.

PlanBest startCharging, best startCharging from 6 pmWhole bill with EV
Rate 10Any$26/mo$26/mo$166/mo
Rate 1612 am$25/mo$32/mo$160/mo

With an EV charged at its best hour, the cheapest plan overall is Rate 16. Compare plans on your own usage.

How MDU’s plans work

Rate 10 (Residential Electric Service). In July the first 0 kWh a month cost 12.1¢ each; then . An average North Dakota home (1,077 kWh in July) stays within the first tier. Fixed charge: $19.23 a month.

Rate 16 (Optional Time-of-Day Residential Service). Peak noon–8 pm on July weekdays; 8 of 24 hours carry the top price of 14.0¢. The cheapest July weekday hour costs 10.2¢, so moving 1 kWh out of the top hours saves 3.8¢. January weekdays range from 8.3¢ to 12.1¢. Summer pricing applies Jun–Sep; winter pricing Oct–May. Weekends follow a different schedule from weekdays. Fixed charge: $30.36 a month.

Prices on this page are all-in per kWh, before taxes: base rates, supply and every per-kWh rider in the utility’s current tariff sheets. Your bill shows them as separate lines, and riders can change between tariff revisions.

As a cross-check, MDU billed its residential customers an average of 11.72¢ per kWh in 2024 (revenue ÷ sales, EIA-861). A plan taken from URDB is shown only if its all-in price is consistent with that figure, adjusted for North Dakota’s price change since.

Sources for each plan

PlanEffectiveSeasonsSolar exportsSource and status
Rate 10
Transcribed from the utility’s tariff
September 1, 2026 Summer pricing Jun–Sep; winter Oct–May Not recorded in URDB Checked September 28, 2026
NDPSC Case PU-26-241 interim tariff · NDPSC Case PU-26-241 interim rate order · NDPSC Case PU-26-241 application (rider sheets) · NDPSC MDU fuel cost adjustment chart
Rate 16
Transcribed from the utility’s tariff
September 1, 2026 Summer pricing Jun–Sep; winter Oct–May Not recorded in URDB Checked September 28, 2026
NDPSC Case PU-26-241 interim tariff · NDPSC Case PU-26-241 interim rate order · NDPSC Case PU-26-241 application (rider sheets) · NDPSC MDU fuel cost adjustment chart

Plans marked “Checked” were transcribed from the utility’s current tariff and rider sheets, all charges included, and are re-checked on the date shown in each file. Other plans come from the OpenEI U.S. Utility Rate Database (CC BY 4.0) and have not yet been checked line by line against the utility’s tariff. Always confirm the current rates on your utility’s website before switching plans.

Run the numbers on MDU