About MassOutage data
Built and maintained by Dan Ochoa. Last updated July 9, 2026.
MassOutage brings public US power data into one place: for every county you get live outages, a decade of history, utility reliability, and electricity prices. We hold one rule above the rest — every number is traced to the government source it came from, and where a utility doesn't report, we show the gap instead of guessing. MassOutage is not affiliated with any utility or government agency.
Live outages
Live outage counts are aggregated from many public feeds. The national base is ODIN, a US Department of Energy / Oak Ridge National Laboratory program that collects near-real-time reports from participating utilities. On top of it we add statewide emergency-management aggregators and the public outage maps of major utilities — for example, Massachusetts (MEMA), California (Cal OES), Georgia Power, Dominion, and Duke Energy — each feeding the counties they serve.
Coverage is still partial. Many small cooperatives and municipal utilities publish no clean public feed, so some counties have no live data at all. Where a source reports only a utility- or state-wide total, we count it toward the state total but never guess which county it falls in — we show gaps as gaps rather than imply coverage we don't have.
Historical data
History comes from EAGLE-I, a DOE/ORNL program that recorded county-level outages at 15-minute resolution across the large majority of US electricity customers. We fold these high-resolution readings into outage events, monthly severity trends, and a yearly “average hours without power per customer” figure (similar to the utility reliability metric SAIDI).
Caveats
- Outage data is only as accurate as utilities report it.
- Live and historical figures use different sources and are never summed together.
- Very short outages (under ~15 minutes) may not appear in the historical record.
- MassOutage is not affiliated with any utility or government agency.
For the exact formula behind every figure, see our methodology.
Contact & corrections
Accuracy is the whole point of this site, so we treat corrections seriously. If a number looks wrong — a county mislabeled, an outdated reliability figure, a source that has moved — email [email protected] with the page and what you saw, and we'll review and fix it promptly. The same address handles press, data, and general questions.