County annual report · FIPS 25027
2015 Worcester County, MA Power Outage Report
In 2015, customers in Worcester County, MA went without power for an average of 2.8 hours, a total of 587K customer-hours (Massachusetts average 1.5 hours). That ranks 3rd worst of 14 Massachusetts counties and 975th of 2,484 nationally.
Compared with MA, the US
Coverage line is EAGLE-I's share of Massachusetts customers tracked each year.
Biggest outages in Worcester County, 2015
The 10 outage episodes with the most customers out at once. Times are UTC.
| # | Started (UTC) | Ended (UTC) | Duration | Peak out | Customer-hours |
|---|---|---|---|---|---|
| 1 | August 4, 2015 20:15 | August 5, 2015 03:15 | 7h | 11,082 | 38K |
| 2 | August 15, 2015 19:45 | August 17, 2015 04:00 | 1d 8h | 9,093 | 29K |
| 3 | July 1, 2015 11:15 | July 2, 2015 08:45 | 21h 30m | 8,240 | 19K |
| 4 | July 9, 2015 04:30 | July 9, 2015 17:45 | 13h 15m | 6,789 | 12K |
| 5 | March 17, 2015 19:45 | March 18, 2015 18:00 | 22h 15m | 4,594 | 12K |
| 6 | September 9, 2015 05:00 | September 9, 2015 07:30 | 2h 30m | 4,508 | 2,276 |
| 7 | October 29, 2015 14:30 | October 30, 2015 07:30 | 17h | 4,457 | 7,396 |
| 8 | November 23, 2015 14:45 | November 24, 2015 09:45 | 19h | 3,758 | 2,664 |
| 9 | May 31, 2015 19:00 | June 1, 2015 15:15 | 20h 15m | 3,473 | 16K |
| 10 | March 11, 2015 17:15 | March 12, 2015 23:30 | 1d 6h | 3,460 | 11K |
Outage episodes by size in 2015: 258 reached 100+ customers, 67 reached 1,000+ customers, 1 reached 10,000+ customers.
Utility reliability filed with the EIA
SAIDI (average outage time per customer) and SAIFI (average interruptions per customer) that utilities serving Worcester County reported on EIA Form 861 for 2015, or their most recent earlier filing. Utility-wide figures, not county-specific.
| Utility | EIA year | SAIDI | SAIFI | SAIDI excl. major events | SAIFI excl. major events |
|---|---|---|---|---|---|
| Massachusetts Electric Co | 2014 | 2.4 hrs | 1.12 | 1.6 hrs | 0.96 |
| Unitil Energy Systems | 2015 | 1.9 hrs | 1.58 | 1.9 hrs | 1.58 |
| Fitchburg Gas & Elec Light Co | 2015 | 55 min | 1.02 | 55 min | 1.02 |
| Town of Sterling - (MA) | 2013 | 19 min | 0.28 | 8 min | 0.13 |
| Town of Ashburnham - (MA) | - | - | - | - | - |
| Town of Boylston - (MA) | - | - | - | - | - |
| Town of Holden - (MA) | - | - | - | - | - |
| Town of Paxton - (MA) | - | - | - | - | - |
| Town of Princeton - (MA) | - | - | - | - | - |
| Town of Shrewsbury - (MA) | - | - | - | - | - |
| Town of Templeton - (MA) | - | - | - | - | - |
| Town of West Boylston - (MA) | - | - | - | - | - |
About this data
- Outage figures come from DOE/ORNL EAGLE-I, which records customers out by county every 15 minutes. EAGLE-I tracked about n/a of Massachusetts's customers in 2015; utilities it does not see are not counted.
- Hours per customer = outage customer-minutes ÷ 212,617 customers (ORNL modeled county customer count), including major storm days. It is comparable across counties but is not the SAIDI a utility files.
- An outage event is a continuous stretch with customers out; counts at 100, 1,000 and 10,000+ use its peak.
- Years loaded: 2015–2025. Worcester County has data for 2015–2025.
Cite this report
MassOutage (massoutage.com), Worcester County, MA annual power outage report, 2015, data as of Oct 3, 2026 02:41 UTC, sources: DOE EAGLE-I (https://eagle-i.doe.gov/); EAGLE-I modeled customer counts (MCC) (https://figshare.com/); EIA Form 861 (utility reliability) (https://www.eia.gov/electricity/data/eia861/). https://massoutage.com/reports/2015/massachusetts/worcester-county