Cooperative · North Dakota · EIA 20413

Mountrail-Williams Elec Coop

Cooperative · North Dakota · 19K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 242 minutes/customer.

Reliability detail ↓ North Dakota utilities

Reliability verdict

Mountrail-Williams Elec Coop shows near-benchmark chronic reliability in 2023: 129 minutes SAIDI excluding major events across 19K customers.

242 min
SAIDI 2023
1.39
SAIFI 2023
129 min
SAIDI ex-MED
19K
Customers

Chronic reliability judged on SAIDI excluding major event days when reported (IEEE 1366). Source: EIA Form 861 · August 2026.

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Signature read: mid-cohort SAIDI between the 96 and 258 minute tercile cuts.

What mid-pack Mountrail-Williams Elec Coop filings show

Mountrail-Williams Elec Coop is a member-owned electric cooperative operating in North Dakota under EIA identifier 20413. It reports service to approximately 18,949 customer accounts and generated about $0.42 billion in annual electric revenue, with a service footprint spanning 25 ZIP codes. Being member-owned, this cooperative answers to its ratepayers rather than outside shareholders, a structure that tends to influence how rate cases and capital spending get decided.

In 2023, the average Mountrail-Williams Elec Coop customer experienced 241.8 minutes of power interruptions, a metric called SAIDI (System Average Interruption Duration Index). That lands within the usual 120–180 minute national benchmark band, roughly on par with typical U.S. distribution-utility performance. The SAIFI figure, which tracks average outage events per customer, came in at 1.39 for the same period, meaning customers statistically saw about 1 distinct interruption that year. Strip out major event days (hurricanes, ice storms) and SAIDI falls to 129.2 minutes; the difference from the headline 241.8 shows how much of the outage total came from weather rather than everyday grid issues.

Mountrail-Williams Elec Coop has 2 years of continuous EIA reporting on file (2022–2023), enough to read a real trend rather than a single-year snapshot. Over that window, SAIDI moved from 7226.8 down to 241.8 minutes, a trend worth noting for anyone weighing capital investment outcomes. Note: this figure is unusually low compared to typical U.S. utility performance and may reflect an incomplete EIA filing for this year rather than a genuine reliability improvement -- treat with caution and cross-check against Mountrail-Williams Elec Coop's other reported years.

D
Reliability Score
41/100
Mountrail-Williams Elec Coop · 3 of 3 dimensions reported

Based on this utility's own EIA Form 861 reliability record -- baseline (major-event- excluded) outage duration, total outage duration, and outage frequency -- each benchmarked against every reporting utility nationwide. Not a measure of electricity rates or customer service, which this portal does not track.

Baseline Reliability F 129.2 min/yr
SAIDI excluding major-event days — day-to-day grid performance
Total Outage Duration D 241.8 min/yr
SAIDI including storms and major events — the full-year experience
Outage Frequency D 1.39/yr
SAIFI — average number of interruptions per customer per year
SAIDI vs. national mean (341 min) 32.2%

242 minutes per customer per year

Mountrail-Williams Elec Coop SAIDI

Minutes without power per year (2023)

242 SAIDI242 SAIDINat. avg 341341SAIDI242SAIDI

Good

SAIDI by year (2022-2023)

Minutes per customer-year · EIA Form 861

Year-by-year SAIDI for Mountrail-Williams Elec Coop from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.

Source: U.S. EIA Form 861 As of August 2026

Mountrail-Williams Elec Coop SAIDI trend

0 1000 2000 3000 4000 5000 6000 7000 8000 2022 2023 7226.8 241.8
Year-by-year SAIDI from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.

Mountrail-Williams Elec Coop vs the nationwide SAIDI distribution

Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure

242 Around the middle fewer outage minutes than 36% of 911 utilities

Utilities nationwide, banded by latest reported SAIDI (minutes)

Each bar is a band; taller bars hold more utilities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source U.S. EIA Form 861 reliability filings · August 2026

Price vs. reliability

Where Mountrail-Williams Elec Coop sits on price vs. reliability

Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, Mountrail-Williams Elec Coop charges more per customer than 100% of them, and is more reliable (lower SAIDI) than 39% of them, placing it in the quadrant where it pays more but is LESS reliable, a premium price without a reliability payoff. Revenue per customer and outage minutes are independent figures: paying more does not guarantee fewer outages.

Mountrail-Williams Elec Coop vs. a 40-utility national peer sample, price percentile vs. reliability percentile. Scatter plot of 41 data points (bubble-sized by third dimension). 050100150 050100150 Best valuePays for itCheap + riskyWorst deal Price percentile Reliability percentile Point, Price percentile: 0 · Reliability percentile: 43Point, Price percentile: 3 · Reliability percentile: 52Point, Price percentile: 5 · Reliability percentile: 47Point, Price percentile: 8 · Reliability percentile: 87Point, Price percentile: 10 · Reliability percentile: 60Point, Price percentile: 13 · Reliability percentile: 92Point, Price percentile: 15 · Reliability percentile: 22Point, Price percentile: 18 · Reliability percentile: 35Point, Price percentile: 20 · Reliability percentile: 30Point, Price percentile: 23 · Reliability percentile: 82Point, Price percentile: 25 · Reliability percentile: 12Point, Price percentile: 28 · Reliability percentile: 62Point, Price percentile: 30 · Reliability percentile: 72Point, Price percentile: 33 · Reliability percentile: 70Point, Price percentile: 35 · Reliability percentile: 7Point, Price percentile: 38 · Reliability percentile: 0Point, Price percentile: 40 · Reliability percentile: 80Point, Price percentile: 43 · Reliability percentile: 2Point, Price percentile: 45 · Reliability percentile: 32Point, Price percentile: 48 · Reliability percentile: 25Point, Price percentile: 50 · Reliability percentile: 55Point, Price percentile: 53 · Reliability percentile: 50Point, Price percentile: 55 · Reliability percentile: 97Point, Price percentile: 57 · Reliability percentile: 100Point, Price percentile: 60 · Reliability percentile: 5Point, Price percentile: 63 · Reliability percentile: 67Point, Price percentile: 65 · Reliability percentile: 57Point, Price percentile: 68 · Reliability percentile: 10Point, Price percentile: 70 · Reliability percentile: 17Point, Price percentile: 73 · Reliability percentile: 37Point, Price percentile: 75 · Reliability percentile: 85Point, Price percentile: 78 · Reliability percentile: 20Point, Price percentile: 80 · Reliability percentile: 75Point, Price percentile: 83 · Reliability percentile: 77Point, Price percentile: 85 · Reliability percentile: 15Point, Price percentile: 88 · Reliability percentile: 65Point, Price percentile: 90 · Reliability percentile: 90Point, Price percentile: 93 · Reliability percentile: 27Point, Price percentile: 95 · Reliability percentile: 40Point, Price percentile: 98 · Reliability percentile: 95Mountrail-Williams Elec Coop, Price percentile: 100 · Reliability percentile: 39
Mountrail-Williams Elec Coop vs. a 40-utility national peer sample, price percentile vs. reliability percentile.

Revenue per customer: $22,013/year · Latest SAIDI: 241.8 minutes/year.

SAIDI 2023 breakdown: 241.8 minutes

Reliability Trend (2022–2023)

Year SAIDI (min) SAIDI nMED SAIFI Customers
2022 7226.8 121.0 2.841 18,760
2023 241.8 129.2 1.390 18,909

SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.

Service Area

Mountrail-Williams Elec Coop serves 25 ZIP codes in North Dakota.

58626587185873458755587565875758763587695877058771587735877658784587945879558801588305883158835588435884558849588525885458856

Frequently Asked Questions

How reliable is Mountrail-Williams Elec Coop?

Mountrail-Williams Elec Coop had a SAIDI of 241.8 minutes in 2023. Excluding major weather events, this is near the national average.

What type of utility is Mountrail-Williams Elec Coop?

Mountrail-Williams Elec Coop is classified as a Cooperative serving North Dakota.

How many customers does Mountrail-Williams Elec Coop serve?

Mountrail-Williams Elec Coop serves approximately 18,949 customers in North Dakota.

How has Mountrail-Williams Elec Coop's reliability changed over time?

Mountrail-Williams Elec Coop has 2 years of reliability data (2022-2023). This utility's SAIDI has stayed fairly flat over the period. Review the trend table above for year-by-year detail.

Utility Profile

Type
Cooperative
State
North Dakota
Customers
18,949
Annual Revenue
$0.42B
EIA ID
20413

Explore

Utilities with similar EIA profiles

Two cross-state peer sets for Mountrail-Williams Elec Coop. Same-state SAIDI neighbors stay in Read-with below; these neighborhoods are nearest other-state utilities with at least 10,000 reported customers.

Similar customer count

Nearest utilities by Form 861 customers (19K here), outside North Dakota.

Northern Lights, Inc 19K · ID Central New Mexico El Coop, Inc 19K · NM Cimarron Electric Coop 19K · OK Consolidated Cooperative 19K · OH

Similar chronic SAIDI

Nearest utilities by latest SAIDI minutes (241.8 here), outside North Dakota, excluding the customer-peer set.

Southwest Louisiana E M C 242.7 min · LA Duke Energy Progress - (NC) 240.7 min · NC Whitewater Valley Rural EMC 239.7 min · IN RushShelby Energy 244.4 min · IN

Source: U.S. Energy Information Administration Form 861 annual electric power industry survey · ZIP service territory: OpenEI. Disclaimer: informational only, not professional advice. See full disclaimer · methodology.