SAIDI
37 min per year
Average outage minutes (2023)
Town of Reading - (MA) is a municipally-owned utility operating in Massachusetts under EIA identifier 15748. It reports service to approximately 30,483 customer accounts and generated about $0.09 billion in annual electric revenue, with a service footprint spanning 17 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 Town of Reading - (MA) customer experienced 36.9 minutes of power interruptions — a metric called SAIDI (System Average Interruption Duration Index). That places this utility well below the 120–180 minute national benchmark, signaling strong grid hardening and fast restoration practices. SAIFI — the average number of outage events per customer — was 0.34 for the same period, so customers statistically faced roughly 0 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 26.1 minutes — the gap between that figure and the headline 36.9 reveals how much weather, not day-to-day infrastructure, drove outages.
The EIA dataset includes 4 years of continuous reporting (2020–2023) for Town of Reading - (MA), which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has improved from 37.6 to 36.9 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.
SAIDI
37 min per year
Average outage minutes (2023)
SAIFI
0.34 interruptions/yr
Outage frequency (2023)
Customers
30,483
Served in Massachusetts
37 minutes per customer per year
Minutes without power per year (2023)
| Year | SAIDI (min) | SAIDI nMED | SAIFI | Customers |
|---|---|---|---|---|
| 2020 | 37.6 | 18.9 | 0.346 | 30,111 |
| 2021 | 21.8 | 13.9 | 0.275 | 30,504 |
| 2022 | 61.7 | 14.3 | 0.258 | 30,504 |
| 2023 | 36.9 | 26.1 | 0.340 | 30,504 |
SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.
Town of Reading - (MA) serves 17 ZIP codes in Massachusetts.
Town of Reading - (MA) had a SAIDI of 36.9 minutes in 2023, meaning the average customer experienced about 37 minutes of outages that year. This is below the national average, indicating above-average reliability.
Town of Reading - (MA) is classified as a Municipal serving Massachusetts. Municipal utilities are owned and operated by local governments.
SAIDI (System Average Interruption Duration Index) measures the average total minutes per year that a customer of Town of Reading - (MA) experiences power outages. A lower SAIDI indicates better reliability. The national average is roughly 120-180 minutes per year, so comparing Town of Reading - (MA)'s SAIDI to that benchmark shows whether this utility is above or below average.
Town of Reading - (MA) serves approximately 30,483 customers in Massachusetts. Customer count can affect reliability metrics because larger utilities may face different infrastructure challenges compared to smaller ones.
Town of Reading - (MA) 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.
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.
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.