Sierra Pacific Power Co

What This Utility Data Tells You

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.