Grand River Dam Authority, OK
Grand River Dam Authority's outage record
This is one of the steadier grids on file: Grand River Dam Authority's Oklahoma customers went without power for only 13 minutes across 0.3 separate outages last year. That is 95% less outage time than the Oklahoma state average of 4.8 hours a year.
Outage length, and what it means for a generator
A single outage here averages 42 minutes. That is squarely in battery-power-station range; a fuel generator is overkill for most of these. Why outage length, not count, picks the backup: how often vs how long.
Do Grand River Dam Authority customers need a generator
Serving 209 customers here, With a record this steady, Grand River Dam Authority customers rarely have a reason to shop for a backup generator at all.
The source behind this number
These figures come from EIA Form 861, the reliability report a state-run utility like Grand River Dam Authority files with federal regulators every year - serving 209 customers hereaveraged across the whole territory, not any one address or storm. Want the Oklahoma average instead of just this one utility? Oklahoma's statewide record is here. One big storm can move a single year a lot; major event days explains how.