SAIDI
959 min per year
Average outage minutes (2021)
Gibson Electric Members Corp is a member-owned electric cooperative operating in Tennessee under EIA identifier 7174. It reports service to approximately 35,622 customer accounts and generated about $0.09 billion in annual electric revenue, with a service footprint spanning 41 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 2021, the average Gibson Electric Members Corp customer experienced 958.9 minutes of power interruptions — a metric called SAIDI (System Average Interruption Duration Index). That is substantially above the 120–180 minute national benchmark, indicating either storm-prone geography, aging infrastructure, or extended restoration windows. SAIFI — the average number of outage events per customer — was 3.56 for the same period, so customers statistically faced roughly 4 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 132.9 minutes — the gap between that figure and the headline 958.9 reveals how much weather, not day-to-day infrastructure, drove outages.
The EIA dataset includes 2 years of continuous reporting (2020–2021) for Gibson Electric Members Corp, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has increased from 245.8 to 958.9 minutes, which may reflect either worsening weather exposure or delayed grid modernization. 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
959 min per year
Average outage minutes (2021)
SAIFI
3.56 interruptions/yr
Outage frequency (2021)
Customers
35,622
Served in Tennessee
959 minutes per customer per year
Minutes without power per year (2021)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 245.8 | 141.1 | 1.355 | 38,527 |
| 2021 | 958.9 | 132.9 | 3.560 | 38,702 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Gibson Electric Members Corp serves 41 ZIP codes in Tennessee.
Gibson Electric Members Corp had a SAIDI of 958.9 minutes in 2021, meaning the average customer experienced about 959 minutes of outages that year. This is above the national average, indicating below-average reliability.
Gibson Electric Members Corp is classified as a Cooperative serving Tennessee. 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 Gibson Electric Members Corp experiences power outages. A lower SAIDI indicates better reliability. The national average is roughly 120-180 minutes per year, so comparing Gibson Electric Members Corp's SAIDI to that benchmark shows whether this utility is above or below average.
Gibson Electric Members Corp serves approximately 35,622 customers in Tennessee. Customer count can affect reliability metrics because larger utilities may face different infrastructure challenges compared to smaller ones.
Gibson Electric Members Corp has 2 years of reliability data (2020-2021). 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.