Rock Energy Cooperative, IL
Rock Energy Cooperative's outage record
Rock Energy Cooperative customers in Illinois rarely lose power at all: 0.4 interruptions last year, adding up to just 16 minutes without electricity over the whole year. That is 89% less outage time than the Illinois state average of 2.4 hours a year.
Outage length, and what it means for a generator
A single outage here averages 40 minutes. That is squarely in battery-power-station range; a fuel generator is overkill for most of these. The frequency-versus-duration guide covers why length decides the kind of backup.
What this means for buying a generator
Most Rock Energy Cooperative customers keep power almost all year. Serving 10,572 customers here, You probably do not need a generator unless you already have another reason to want one.
Where this number comes from
Rock Energy Cooperative filed these numbers itself, as a member-owned cooperative, under EIA Form 861 - a federal reliability report covering its entire Illinois territory, serving 10,572 customers here, not a single street or outage. See Illinois as a whole, across every utility that filed: Illinois's outage record. The full scoring method lives in the methodology guide.