SAIDI
2694 min per year
Mean outage duration per year (2023)
City of Memphis - (TN) is a municipally-owned utility operating in Tennessee under EIA identifier 12293. It reports service to approximately 414,530 customer accounts and generated about $1.38 billion in annual electric revenue, with a service footprint spanning 83 ZIP codes. Municipal ownership means a local board or city council typically oversees this utility, and it is exempt from federal income tax.
In 2023, the average City of Memphis - (TN) customer experienced 2694.0 minutes of power interruptions, the industry-standard SAIDI metric (System Average Interruption Duration Index). Excluding major weather events from that total, that is substantially above the 120–180 minute national benchmark, indicating either storm-prone geography, aging infrastructure, or extended restoration windows. Over the same period, SAIFI (outage events per customer) was 3.20, putting the typical customer at roughly 3 distinct interruptions that year. Strip out major event days (hurricanes, ice storms) and SAIDI falls to 408.6 minutes; the difference from the headline 2694.0 shows how much of the outage total came from weather rather than everyday grid issues.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for City of Memphis - (TN), which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has increased from 391.2 to 2694.0 minutes, which may reflect either worsening weather exposure or delayed grid modernization.
SAIDI
2694 min per year
Mean outage duration per year (2023)
SAIFI
3.20 interruptions/yr
Average interruption count (2023)
Customers
414,530
Tennessee service territory
2694 min/year per customer
Annual minutes without electric service (2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 391.2 | 233.7 | 2.070 | 414,180 |
| 2021 | 326.4 | 317.6 | 2.100 | 418,304 |
| 2022 | 866.8 | 411.6 | 2.920 | 420,172 |
| 2023 | 2694.0 | 408.6 | 3.200 | 421,615 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
City of Memphis - (TN) serves 83 ZIP codes in Tennessee.
City of Memphis - (TN) had a SAIDI of 2694.0 minutes in 2023 including major weather events, but 408.6 minutes excluding them (the IEEE-standard measure of day-to-day reliability, the gap reflects a major storm that year, not chronic performance). Excluding major weather events, this is above the national average, indicating below-average reliability.
City of Memphis - (TN) is classified as a Municipal serving Tennessee.
City of Memphis - (TN) serves approximately 414,530 customers in Tennessee.
City of Memphis - (TN) 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.
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.
Every figure on PlainUtility is rendered directly from the U.S. Energy Information Administration's Form 861 reliability data, no number is typed in by an editor. This utility's SAIDI/SAIFI figures are rendered directly from EIA Form 861 reliability files. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2020-2023.