Municipal · Tennessee · EIA 5961

Town of Erwin - (TN)

Municipal · Tennessee · 9,091 customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 71 minutes/customer.

Reliability verdict

Town of Erwin - (TN) shows above-average chronic reliability in 2023: 71 minutes SAIDI excluding major events across 9,091 customers.

71 min
SAIDI 2023
1.54
SAIFI 2023
71 min
SAIDI ex-MED
9,091
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 Town of Erwin - (TN) filings show

Town of Erwin - (TN) is a municipally-owned utility operating in Tennessee under EIA identifier 5961. It reports service to approximately 9,091 customer accounts and generated about $0.02 billion in annual electric revenue, with a service footprint spanning 7 ZIP codes. As a municipal utility, it is typically governed by a local board or city council and is exempt from federal income tax.

In 2023, the average Town of Erwin - (TN) customer experienced 71.0 minutes of power interruptions, a metric called SAIDI (System Average Interruption Duration Index). That keeps this utility below the typical 120–180 minute national benchmark, consistent with a well-hardened distribution system and fast restoration crews. The SAIFI figure, which tracks average outage events per customer, came in at 1.54 for the same period, meaning customers statistically saw about 2 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 71.0 minutes, the gap between that figure and the headline 71.0 reveals how much weather, not day-to-day infrastructure, drove outages.

The EIA dataset includes 4 years of continuous reporting (2020–2023) for Town of Erwin - (TN), which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI dropped from 118.0 to 71.0 minutes across that span, a direction regulators and prospective customers tend to watch closely.

C+
Reliability Score
61/100
Town of Erwin - (TN) · 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 C+ 71.0 min/yr
SAIDI excluding major-event days — day-to-day grid performance
Total Outage Duration B 71.0 min/yr
SAIDI including storms and major events — the full-year experience
Outage Frequency D 1.54/yr
SAIFI — average number of interruptions per customer per year
SAIDI vs. national mean (341 min) 9.5%

71 minutes per customer per year

Town of Erwin - (TN) SAIDI

Annual minutes without electric service (2023)

71 SAIDI71 SAIDINat. avg 341341SAIDI71SAIDI

Excellent

SAIDI by year (2020-2023)

Minutes per customer-year · EIA Form 861

Year-by-year SAIDI for Town of Erwin - (TN) 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

Town of Erwin - (TN) SAIDI trend

0 20 40 60 80 100 120 2020 2021 2022 2023 118 62.1 117 71
Year-by-year SAIDI from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.

Town of Erwin - (TN) vs the nationwide SAIDI distribution

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

71 Among the lowest fewer outage minutes than 75% 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: 71.0 minutes

Reliability Trend (2020–2023)

Year SAIDI (min) SAIDI nMED SAIFI
2020 118.0 118.0 1.940
2021 62.1 62.1 1.680
2022 117.0 101.0 1.900
2023 71.0 71.0 1.540

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

Service Area

Town of Erwin - (TN) serves 7 ZIP codes in Tennessee.

37601376043764137650376573765937692

Frequently Asked Questions

How reliable is Town of Erwin - (TN)?

Town of Erwin - (TN) had a SAIDI of 71.0 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 Town of Erwin - (TN)?

Town of Erwin - (TN) is classified as a Municipal serving Tennessee.

How many customers does Town of Erwin - (TN) serve?

Town of Erwin - (TN) serves approximately 9,091 customers in Tennessee.

How has Town of Erwin - (TN)'s reliability changed over time?

Town of Erwin - (TN) has 4 years of reliability data (2020-2023). SAIDI has held roughly steady across these years. Review the trend table above for year-by-year detail.

Utility Profile

Type
Municipal
State
Tennessee
Customers
9,091
Annual Revenue
$0.02B
EIA ID
5961

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.