SAIDI
420 min per year
Average outage minutes (2023)
What This Utility Data Tells You
West Penn Power Company is a investor-owned utility operating in Pennsylvania under EIA identifier 20387. It reports service to approximately 597,758 customer accounts and generated about $1.02 billion in annual electric revenue. As an investor-owned utility, it operates under state public utility commission oversight that reviews rate cases and reliability performance.
In 2023, the average West Penn Power Company customer experienced 420.0 minutes of power interruptions — a metric called SAIDI (System Average Interruption Duration Index). That is substantially above the 120–180 minute national benchmark, indicating either storm-prone geography, aging infrastructure, or extended restoration windows. SAIFI — the average number of outage events per customer — was 1.41 for the same period, so customers statistically faced roughly 1 distinct interruption that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 160.1 minutes — the gap between that figure and the headline 420.0 reveals how much weather, not day-to-day infrastructure, drove outages.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for West Penn Power Company, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has increased from 258.3 to 420.0 minutes, which may reflect either worsening weather exposure or delayed grid modernization. All figures on this page come directly from EIA Form 861, the federal annual electric power industry survey — you can cross-reference them with your own utility bill or use them when comparing providers before relocating.
SAIFI
1.41 interruptions/yr
Outage frequency (2023)
Customers
597,758
Served in Pennsylvania
SAIDI vs. National Average (180 min) 100.0%
420 minutes per customer per year
Minutes without power per year (2023)
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 258.3 | 161.0 | 1.272 | 720,861 |
| 2021 | 254.3 | 152.2 | 1.388 | 722,422 |
| 2022 | 380.1 | 159.5 | 1.474 | 725,417 |
| 2023 | 420.0 | 160.1 | 1.411 | 727,499 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Frequently Asked Questions
How reliable is West Penn Power Company?
West Penn Power Company had a SAIDI of 420.0 minutes in 2023, meaning the average customer experienced about 420 minutes of outages that year. This is above the national average, indicating below-average reliability.
What type of utility is West Penn Power Company?
West Penn Power Company is classified as a IOU serving Pennsylvania. Investor-owned utilities (IOUs) are for-profit companies regulated by state public utility commissions.
What does SAIDI mean for West Penn Power Company?
SAIDI (System Average Interruption Duration Index) measures the average total minutes per year that a customer of West Penn Power Company experiences power outages. A lower SAIDI indicates better reliability. The national average is roughly 120-180 minutes per year, so comparing West Penn Power Company's SAIDI to that benchmark shows whether this utility is above or below average.
How many customers does West Penn Power Company serve?
West Penn Power Company serves approximately 597,758 customers in Pennsylvania. Customer count can affect reliability metrics because larger utilities may face different infrastructure challenges compared to smaller ones.
How has West Penn Power Company's reliability changed over time?
West Penn Power Company 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.
What is SAIDI without major event days?
SAIDI "without major event days" (SAIDI nMED) excludes outages caused by hurricanes, ice storms, and other catastrophic weather events. It better reflects day-to-day infrastructure reliability rather than vulnerability to extreme weather. Both standard SAIDI and SAIDI nMED are shown in the reliability trend table above.
Utility Profile
- Type
- IOU
- State
- Pennsylvania
- Customers
- 597,758
- Annual Revenue
- $1.02B
- EIA ID
- 20387
Related Data
Guides
Data Source: U.S. Energy Information Administration Form 861 annual electric power industry survey. ZIP service territory from OpenEI.
Related
Data sourced from official EIA reliability statistics and OpenEI utility rate database. See our methodology for details. Retrieved and formatted by PlainUtility Editorial
Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the U.S. Energy Information Administration (EIA) Form 861. Consult a qualified professional before making decisions based on this data.
Read our methodology — how this data is sourced, computed, and verified.