Power Out Map
– 0% of Oliver out 0 customers out in North Dakota

Power outage history

Oliver County North Dakota

The outage record here is too thin for a reliable yearly average. Raw events are listed below.

Worst outage on record Jun 20, 2025 30% of customers out · 90% back in 4.5 hours
Hours without power, average customer per year –h / yr State average 2.1 h · national median 6.6 h
Major outages a year – Peaks over 10% of customers or 50,000 customers
Typical time to restore 90% 2hours Median across major outages, from the peak
Longest single outage 6hours Jun 20, 2025, over 1% of customers out
Outage hours on storm days 56% Share falling on days with a NOAA storm report here
Worst year –
Electricity customers 1,231 ORNL customer model · 0 well-covered years

Every day since 2015

Eleven years, one night at a time

Each cell is a day. The brighter it is, the larger the share of Oliver's customers who were without power at that day's worst moment.

20152016201720182019202020212022202320242025
0%100% of customers out

Year by year

Hours in the dark, per customer

Oliver, hours without power per customer

OliverUS median countyNorth Dakota average
0 2 4 6 8 ’17 ’18 ’19 ’20 ’21 ’22 ’24 ’25 US 6.6 ND 2.1

The record

The biggest outages since 2015

Ranked by customer-hours lost: customers out multiplied by how long they stayed out. Times are local.

Began Storm Peak out Share Lasted 90% restored Customer-hours
Jun 20, 2025 Thunderstorms 369 30% 6.0 h 4.5 h 1.5k
Oct 16, 2025 No storm report 366 30% 3.0 h 3.0 h 1.0k
Apr 24, 2022 Winter storm 366 30% 1.8 h 1.8 h 639
Jan 5, 2020 No storm report 363 29% 1.8 h 1.0 h 632
Jun 10, 2017 Thunderstorms 186 15% 3.2 h 3.2 h 602
Sep 30, 2024 No storm report 178 14% 3.0 h 1.8 h 393
Jun 29, 2018 Thunderstorms 189 15% 3.2 h 1.2 h 377
Jul 7, 2020 Tornadoes 364 30% 1.0 h 30 min 362
Jul 12, 2024 Thunderstorms 68 6% 2.5 h 2.5 h 165
Aug 29, 2020 No storm report 183 15% 48 min 48 min 137
Jun 4, 2025 No storm report 371 30% 12 min – 93
Jun 6, 2021 No storm report 266 22% 12 min – 66

After the peak

How fast the lights come back

Each line is one major outage, from its peak. The amber line is the typical path.

0% 25% 50% 75% 100% peak+24h+48h+72h+96h half back by +4h 90% by +4h

When it happens

The outage clock

Customer-hours out by month (rings, January innermost) and local hour, 2018–2025.

00061218 Jan inside

What was happening

Weather behind the outages

Each outage is matched to NOAA storm reports for Oliver from twelve hours before it began to its peak. Matching shows coincidence, not proof of cause.

  • No storm on record 43%
  • Thunderstorms 38%
  • Winter storm 12%
  • Tornadoes 6.6%

Who keeps the lights on

Utilities serving Oliver

As each utility reports to the Energy Information Administration for its whole North Dakota territory, not this county alone. Outage minutes include major storm days.

Utility Type Outage min / yr Excl. major storms Outages / yr Residential ¢/kWh Customers
Mor-Gran-Sou Electric Coop Inc ND – – – 13.4 92k
Montana-Dakota Utilities Co Investor Owned 95 65 0.81 11.1 80k
Roughrider Electric Cooperativ Cooperative – – – 10.8 11k
WAPA-- Western Area Power Administration Federal – – – – –

EIA Form 861, latest year each utility reported. Outage minutes are SAIDI, the yearly minutes the average customer goes without power; outages a year are SAIFI.

Next door

Neighbouring counties

Across North Dakota

Where it is darkest

Hours / yr64+

All North Dakota counties →

About these numbers

Notes

Outages come from the EAGLE-I record of utility outage maps collected every 15 minutes by Oak Ridge National Laboratory. Hours without power are customer-hours divided by the county's 1,231 electricity customers. Averages use well-covered years from 2018. Outages shorter than 15 minutes, and utilities that publish no outage map, are not in the record, so these figures understate the total. How every number is made →