Municipal · Tennessee · EIA 9777
Johnson City - (TN)
Municipal · Tennessee · 83K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 107 minutes/customer.
Reliability verdict
Johnson City - (TN) shows above-average chronic reliability in 2023: 40 minutes SAIDI excluding major events (107 minutes including them) across 83K customers.
- 107 min
- SAIDI 2023
- 1.04
- SAIFI 2023
- 40 min
- SAIDI ex-MED
- 83K
- Customers
Chronic reliability judged on SAIDI excluding major event days when reported (IEEE 1366). Source: EIA Form 861 · August 2026.
Signature read: mid-cohort SAIDI between the 96 and 258 minute tercile cuts.
What mid-pack Johnson City - (TN) filings show
Johnson City - (TN) is a municipally-owned utility operating in Tennessee under EIA identifier 9777. It reports service to approximately 83,278 customer accounts and generated about $0.21 billion in annual electric revenue, with a service footprint spanning 6 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 Johnson City - (TN) customer experienced 107.2 minutes of power interruptions, a metric called SAIDI (System Average Interruption Duration Index). Excluding major weather events from that total, that keeps this utility below the typical 120–180 minute national benchmark, consistent with a well-hardened distribution system and fast restoration crews. Over the same period, SAIFI (outage events per customer) was 1.04, putting the typical customer at roughly 1 distinct interruption that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 39.6 minutes, the gap between that figure and the headline 107.2 reveals how much weather, not day-to-day infrastructure, drove outages.
Johnson City - (TN) has 4 years of continuous EIA reporting on file (2020–2023), enough to read a real trend rather than a single-year snapshot. SAIDI climbed from 29.6 to 107.2 minutes over that window, a shift that can point to worsening weather exposure or delayed grid modernization.
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.
107 minutes per customer per year
Annual minutes without electric service (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for Johnson City - (TN) from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
Johnson City - (TN) SAIDI trend
Johnson City - (TN) vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
107 Lower than most fewer outage minutes than 64% 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
Price vs. reliability
Where Johnson City - (TN) sits on price vs. reliability
Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, Johnson City - (TN) charges more per customer than 49% of them, and is more reliable (lower SAIDI) than 67% of them, placing it in the quadrant where it pays less while still being more reliable, the best-value quadrant. Revenue per customer and outage minutes are independent figures: paying more does not guarantee fewer outages.
Revenue per customer: $2,530/year · Latest SAIDI: 107.2 minutes/year.
SAIDI 2023 breakdown: 107.2 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 29.6 | 27.8 | 0.340 | 79,593 |
| 2021 | 20.1 | 20.0 | 0.254 | 80,716 |
| 2022 | 43.1 | 32.9 | 0.388 | 81,695 |
| 2023 | 107.2 | 39.6 | 1.043 | 82,793 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Johnson City - (TN) serves 6 ZIP codes in Tennessee.
Frequently Asked Questions
How reliable is Johnson City - (TN)?
Johnson City - (TN) had a SAIDI of 107.2 minutes in 2023 including major weather events, but 39.6 minutes excluding them (the industry-standard measure of routine reliability, so the gap traces back to a major storm that year, not a chronic issue). Excluding major weather events, this is below the national average, indicating above-average reliability.
What type of utility is Johnson City - (TN)?
Johnson City - (TN) is classified as a Municipal serving Tennessee.
How many customers does Johnson City - (TN) serve?
Johnson City - (TN) serves approximately 83,278 customers in Tennessee.
How has Johnson City - (TN)'s reliability changed over time?
Johnson City - (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.
Utility Profile
- Type
- Municipal
- State
- Tennessee
- Customers
- 83,278
- Annual Revenue
- $0.21B
- EIA ID
- 9777
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for Johnson City - (TN). Same-state SAIDI neighbors stay in Read-with below; these neighborhoods are nearest other-state utilities with at least 10,000 reported customers.
Similar customer count
Nearest utilities by Form 861 customers (83K here), outside Tennessee.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (107.2 here), outside Tennessee, excluding the customer-peer set.
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.