SAIDI
208 min per year
Average outage minutes (2023)
What This Utility Data Tells You
Niagara Mohawk Power Corp. is a investor-owned utility operating in New York under EIA identifier 13573. It reports service to approximately 1,542,714 customer accounts and generated about $2.31 billion in annual electric revenue, with a service footprint spanning 500 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 Niagara Mohawk Power Corp. customer experienced 207.9 minutes of power interruptions — a metric called SAIDI (System Average Interruption Duration Index). 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 1.14 for the same period, so customers statistically faced roughly 1 distinct interruption that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 132.4 minutes — the gap between that figure and the headline 207.9 reveals how much weather, not day-to-day infrastructure, drove outages.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for Niagara Mohawk Power Corp., which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has improved from 455.3 to 207.9 minutes over that window — a meaningful direction for prospective customers and regulators watching capital investment outcomes. All figures on this page come directly from EIA Form 861, the federal annual electric power industry survey, with service territory ZIPs sourced from OpenEI — you can cross-reference them with your own utility bill or use them when comparing providers before relocating.
SAIFI
1.14 interruptions/yr
Outage frequency (2023)
Customers
1,542,714
Served in New York
SAIDI vs. National Average (180 min) 52.0%
208 minutes per customer per year
Minutes without power per year (2023)
Reliability Trend (2020–2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 455.3 | 144.5 | 1.499 | 1,663,243 |
| 2021 | 221.3 | 133.7 | 1.318 | 1,674,003 |
| 2022 | 354.0 | 152.7 | 1.489 | 1,678,861 |
| 2023 | 207.9 | 132.4 | 1.142 | 1,679,983 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Service Area
Niagara Mohawk Power Corp. serves 500 ZIP codes in New York.
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Frequently Asked Questions
How reliable is Niagara Mohawk Power Corp.?
Niagara Mohawk Power Corp. had a SAIDI of 207.9 minutes in 2023, meaning the average customer experienced about 208 minutes of outages that year. This is near the national average.
What type of utility is Niagara Mohawk Power Corp.?
Niagara Mohawk Power Corp. is classified as a IOU serving New York. Investor-owned utilities (IOUs) are for-profit companies regulated by state public utility commissions.
What does SAIDI mean for Niagara Mohawk Power Corp.?
SAIDI (System Average Interruption Duration Index) measures the average total minutes per year that a customer of Niagara Mohawk Power Corp. experiences power outages. A lower SAIDI indicates better reliability. The national average is roughly 120-180 minutes per year, so comparing Niagara Mohawk Power Corp.'s SAIDI to that benchmark shows whether this utility is above or below average.
How many customers does Niagara Mohawk Power Corp. serve?
Niagara Mohawk Power Corp. serves approximately 1,542,714 customers in New York. Customer count can affect reliability metrics because larger utilities may face different infrastructure challenges compared to smaller ones.
How has Niagara Mohawk Power Corp.'s reliability changed over time?
Niagara Mohawk Power Corp. 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
- New York
- Customers
- 1,542,714
- Annual Revenue
- $2.31B
- EIA ID
- 13573
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.