Cooperative · South Dakota · EIA 13750

Northern Electric Coop, Inc

Cooperative · South Dakota · 6,717 customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 74 minutes/customer.

Reliability verdict

Northern Electric Coop, Inc shows above-average chronic reliability in 2023: 54 minutes SAIDI excluding major events across 6,717 customers.

74 min
SAIDI 2023
0.67
SAIFI 2023
54 min
SAIDI ex-MED
6,717
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: short interruption minutes vs the 911 utility cohort (≤96 min tercile cut).

What short-outage Northern Electric Coop, Inc filings show

Northern Electric Coop, Inc is a member-owned electric cooperative operating in South Dakota under EIA identifier 13750. It reports service to approximately 6,717 customer accounts and generated about $0.03 billion in annual electric revenue, with a service footprint spanning 35 ZIP codes. Cooperative ownership means the utility is run for the benefit of the ratepayer-members who elect its board, rather than for shareholder returns, which can shift how rate and investment decisions get made.

In 2023, the average Northern Electric Coop, Inc customer experienced 73.9 minutes of power interruptions, a measure known as SAIDI, or System Average Interruption Duration Index. That places this utility well below the 120–180 minute national benchmark, signaling strong grid hardening and fast restoration practices. SAIFI, the average number of outage events per customer, was 0.67 for the same period, so customers statistically faced roughly 1 distinct interruption that year. Once major event days (hurricanes, ice storms) are excluded, SAIDI comes down to 54.2 minutes, and the spread against the headline 73.9 indicates how much weather, versus routine infrastructure, drove the outage total.

Northern Electric Coop, Inc has 4 years of continuous EIA reporting on file (2020–2023), enough to read a real trend rather than a single-year snapshot. SAIDI has improved from 100.0 to 73.9 minutes over that window, a meaningful direction for prospective customers and regulators watching capital investment outcomes.

B
Reliability Score
74/100
Northern Electric Coop, Inc · 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 B 54.2 min/yr
SAIDI excluding major-event days — day-to-day grid performance
Total Outage Duration B 73.9 min/yr
SAIDI including storms and major events — the full-year experience
Outage Frequency B+ 0.67/yr
SAIFI — average number of interruptions per customer per year
SAIDI vs. national mean (341 min) 9.9%

74 outage minutes per customer annually

Northern Electric Coop, Inc SAIDI

Annual minutes without electric service (2023)

74 SAIDI74 SAIDINat. avg 341341SAIDI74SAIDI

Excellent

SAIDI by year (2020-2023)

Minutes per customer-year · EIA Form 861

Year-by-year SAIDI for Northern Electric Coop, Inc 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

Northern Electric Coop, Inc SAIDI trend

0 50 100 150 200 250 300 350 2020 2021 2022 2023 100 117.5 304.7 73.9
Year-by-year SAIDI from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.

Northern Electric Coop, Inc vs the nationwide SAIDI distribution

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

74 Lower than most fewer outage minutes than 73% 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

SAIDI 2023 breakdown: 73.9 minutes

Reliability Trend (2020–2023)

Year SAIDI (min) SAIDI nMED SAIFI Customers
2020 100.0 93.4 0.616 6,446
2021 117.5 114.6 1.202 6,522
2022 304.7 108.8 1.089 6,587
2023 73.9 54.2 0.668 6,717

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

Service Area

Northern Electric Coop, Inc serves 35 ZIP codes in South Dakota.

5721757258573225734857381574015742157422574245742657427574305743257433574345743557436574395744057441574455744657449574515745657460574615746557469574705747457476574775747957481

Frequently Asked Questions

How reliable is Northern Electric Coop, Inc?

Northern Electric Coop, Inc had a SAIDI of 73.9 minutes in 2023. Leaving aside major weather events, that figure comes in under the national average, pointing to above-average reliability.

What type of utility is Northern Electric Coop, Inc?

Northern Electric Coop, Inc is classified as a Cooperative serving South Dakota.

How many customers does Northern Electric Coop, Inc serve?

Northern Electric Coop, Inc serves approximately 6,717 customers in South Dakota.

How has Northern Electric Coop, Inc's reliability changed over time?

Northern Electric Coop, Inc has 4 years of reliability data (2020-2023). SAIDI has remained relatively stable over this period. Review the trend table above for year-by-year detail.

Utility Profile

Type
Cooperative
State
South Dakota
Customers
6,717
Annual Revenue
$0.03B
EIA ID
13750

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.