IOU · Nevada · EIA 17166
Sierra Pacific Power Co
IOU · Nevada · 376K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 327 minutes/customer.
Reliability verdict
Sierra Pacific Power Co shows near-benchmark chronic reliability in 2023: 162 minutes SAIDI excluding major events (327 minutes including them) across 376K customers.
- 327 min
- SAIDI 2023
- 1.81
- SAIFI 2023
- 162 min
- SAIDI ex-MED
- 376K
- Customers
Chronic reliability judged on SAIDI excluding major event days when reported (IEEE 1366). Source: EIA Form 861 · August 2026.
Signature read: long interruption minutes vs the 911 utility cohort (>258 min tercile cut).
What long-outage Sierra Pacific Power Co filings show
Sierra Pacific Power Co is an investor-owned utility operating in Nevada under EIA identifier 17166. It reports service to approximately 375,755 customer accounts and generated about $1.13 billion in annual electric revenue, with a service footprint spanning 97 ZIP codes. As an investor-owned utility, it operates under state public utility commission oversight that reviews rate cases and reliability performance.
In 2023, the average Sierra Pacific Power Co customer experienced 327.3 minutes of power interruptions, the industry-standard SAIDI metric (System Average Interruption Duration Index). Excluding major weather events from that total, that sits within the 120–180 minute national benchmark range, indicating performance typical of U.S. distribution utilities. SAIFI, the average number of outage events per customer, was 1.81 for the same period, so customers statistically faced roughly 2 distinct interruptions that year. Strip out major event days (hurricanes, ice storms) and SAIDI falls to 162.3 minutes; the difference from the headline 327.3 shows how much of the outage total came from weather rather than everyday grid issues.
With 4 consecutive years of EIA data (2020–2023), Sierra Pacific Power Co's reliability record can be judged on trend rather than one isolated year. SAIDI has increased from 132.7 to 327.3 minutes, which may reflect either 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.
327 minutes per customer per year
Minutes without power per year (2023)
SAIDI by year (2020-2023)
Minutes per customer-year · EIA Form 861
Year-by-year SAIDI for Sierra Pacific Power Co from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.
Sierra Pacific Power Co SAIDI trend
Sierra Pacific Power Co vs the nationwide SAIDI distribution
Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure
327 Around the middle fewer outage minutes than 28% 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 Sierra Pacific Power Co sits on price vs. reliability
Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, Sierra Pacific Power Co charges more per customer than 74% of them, and is more reliable (lower SAIDI) than 31% of them, placing it in the quadrant where it pays more but is LESS reliable, a premium price without a reliability payoff. Revenue per customer and outage minutes are independent figures: paying more does not guarantee fewer outages.
Revenue per customer: $3,008/year · Latest SAIDI: 327.3 minutes/year.
SAIDI 2023 breakdown: 327.3 minutes
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 132.7 | 100.2 | 1.270 | 375,972 |
| 2021 | 160.6 | 121.1 | 1.277 | 379,396 |
| 2022 | 536.5 | 151.3 | 2.020 | 385,075 |
| 2023 | 327.3 | 162.3 | 1.810 | 389,635 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Sierra Pacific Power Co serves 97 ZIP codes in Nevada.
Frequently Asked Questions
How reliable is Sierra Pacific Power Co?
Sierra Pacific Power Co had a SAIDI of 327.3 minutes in 2023 including major weather events, but 162.3 minutes excluding them (the IEEE-standard day-to-day reliability measure, the difference points to a major storm that year rather than an ongoing problem). Leaving aside major weather events, that figure sits close to the national average.
What type of utility is Sierra Pacific Power Co?
Sierra Pacific Power Co is classified as a IOU serving Nevada.
How many customers does Sierra Pacific Power Co serve?
Sierra Pacific Power Co serves approximately 375,755 customers in Nevada.
How has Sierra Pacific Power Co's reliability changed over time?
Sierra Pacific Power Co 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
- IOU
- State
- Nevada
- Customers
- 375,755
- Annual Revenue
- $1.13B
- EIA ID
- 17166
Explore
Utilities with similar EIA profiles
Two cross-state peer sets for Sierra Pacific Power Co. 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 (376K here), outside Nevada.
Similar chronic SAIDI
Nearest utilities by latest SAIDI minutes (327.3 here), outside Nevada, 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.