SAIDI
88 min per year
Average outage minutes (2023)
Union Electric Membership Corp - (NC) is a member-owned electric cooperative operating in North Carolina under EIA identifier 19435. It reports service to approximately 85,715 customer accounts and generated about $0.17 billion in annual electric revenue, with a service footprint spanning 32 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 Union Electric Membership Corp - (NC) customer experienced 88.0 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 0.89 for the same period, so customers statistically faced roughly 1 distinct interruption that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 59.3 minutes — the gap between that figure and the headline 88.0 reveals how much weather, not day-to-day infrastructure, drove outages.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for Union Electric Membership Corp - (NC), which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has improved from 186.7 to 88.0 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
88 min per year
Average outage minutes (2023)
SAIFI
0.89 interruptions/yr
Outage frequency (2023)
Customers
85,715
Served in North Carolina
88 minutes per customer per year
Minutes without power per year (2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 186.7 | 61.4 | 1.250 | 78,387 |
| 2021 | 79.8 | 62.0 | 0.936 | 80,287 |
| 2022 | 170.4 | 58.9 | 1.390 | 82,397 |
| 2023 | 88.0 | 59.3 | 0.894 | 84,780 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Union Electric Membership Corp - (NC) serves 32 ZIP codes in North Carolina.
Union Electric Membership Corp - (NC) had a SAIDI of 88.0 minutes in 2023, meaning the average customer experienced about 88 minutes of outages that year. This is below the national average, indicating above-average reliability.
Union Electric Membership Corp - (NC) is classified as a Cooperative serving North Carolina. Electric cooperatives are member-owned nonprofit utilities, typically serving rural areas.
SAIDI (System Average Interruption Duration Index) measures the average total minutes per year that a customer of Union Electric Membership Corp - (NC) experiences power outages. A lower SAIDI indicates better reliability. The national average is roughly 120-180 minutes per year, so comparing Union Electric Membership Corp - (NC)'s SAIDI to that benchmark shows whether this utility is above or below average.
Union Electric Membership Corp - (NC) serves approximately 85,715 customers in North Carolina. Customer count can affect reliability metrics because larger utilities may face different infrastructure challenges compared to smaller ones.
Union Electric Membership Corp - (NC) 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.
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.
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.
Read our methodology — how this data is sourced, computed, and verified.