Cooperative South Dakota

Northern Electric Coop, Inc

74min
SAIDI 2023
0.67
SAIFI 2023
6,717
Customers

What This Utility Data Tells You

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. As a cooperative, its governance is accountable to its ratepayer-members rather than shareholders, which often shapes rate-setting and reinvestment priorities.

In 2023, the average Northern Electric Coop, Inc customer experienced 73.9 minutes of power interruptions — a metric called SAIDI (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. Excluding major event days (hurricanes, ice storms), SAIDI drops to 54.2 minutes — the gap between that figure and the headline 73.9 reveals how much weather, not day-to-day infrastructure, drove outages.

The EIA dataset includes 4 years of continuous reporting (2020–2023) for Northern Electric Coop, Inc, which lets you see whether reliability is trending up or down rather than judging from a single 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. All figures on this page come directly from EIA Form 861, the federal annual electric power industry survey, with service territory ZIPs sourced from OpenEI — you can cross-reference them with your own utility bill or use them when comparing providers before relocating.

SAIDI

74 min per year

Average outage minutes (2023)

SAIFI

0.67 interruptions/yr

Outage frequency (2023)

Customers

6,717

Served in South Dakota

SAIDI vs. National Average (180 min) 18.5%

74 minutes per customer per year

Northern Electric Coop, Inc SAIDI

Minutes without power per year (2023)

74 SAIDI74 SAIDINat. avg 120120SAIDI74SAIDI

Excellent

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, meaning the average customer experienced about 74 minutes of outages that year. This is below the national average, indicating above-average reliability.

What type of utility is Northern Electric Coop, Inc?

Northern Electric Coop, Inc is classified as a Cooperative serving South Dakota. Electric cooperatives are member-owned nonprofit utilities, typically serving rural areas.

What does SAIDI mean for Northern Electric Coop, Inc?

SAIDI (System Average Interruption Duration Index) measures the average total minutes per year that a customer of Northern Electric Coop, Inc experiences power outages. A lower SAIDI indicates better reliability. The national average is roughly 120-180 minutes per year, so comparing Northern Electric Coop, Inc's SAIDI to that benchmark shows whether this utility is above or below average.

How many customers does Northern Electric Coop, Inc serve?

Northern Electric Coop, Inc serves approximately 6,717 customers in South Dakota. Customer count can affect reliability metrics because larger utilities may face different infrastructure challenges compared to smaller ones.

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.

What is SAIDI without major event days?

SAIDI "without major event days" (SAIDI nMED) excludes outages caused by hurricanes, ice storms, and other catastrophic weather events. It better reflects day-to-day infrastructure reliability rather than vulnerability to extreme weather. Both standard SAIDI and SAIDI nMED are shown in the reliability trend table above.

Utility Profile

Type
Cooperative
State
South Dakota
Customers
6,717
Annual Revenue
$0.03B
EIA ID
13750
Data Source: U.S. Energy Information Administration Form 861 annual electric power industry survey. ZIP service territory from OpenEI.

Related

Data sourced from official EIA reliability statistics and OpenEI utility rate database. See our methodology for details. Retrieved and formatted by PlainUtility Editorial

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the U.S. Energy Information Administration (EIA) Form 861. Consult a qualified professional before making decisions based on this data.