Rock Energy Cooperative

What This Utility Data Tells You

Rock Energy Cooperative is a member-owned electric cooperative operating in Illinois under EIA identifier 16196. It reports service to approximately 10,386 customer accounts and generated about $0.03 billion in annual electric revenue, with a service footprint spanning 40 ZIP codes. As a cooperative, its governance is accountable to its ratepayer-members rather than shareholders, which often shapes rate-setting and reinvestment priorities.

In 2023, the average Rock Energy Cooperative customer experienced 25.5 minutes of power interruptions, a measure known as SAIDI, or System Average Interruption Duration Index. Excluding major weather events from that total, that places this utility well below the 120–180 minute national benchmark, signaling strong grid hardening and fast restoration practices. Over the same period, SAIFI (outage events per customer) was 0.34, putting the typical customer at roughly 0 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 7.3 minutes, the gap between that figure and the headline 25.5 reveals how much weather, not day-to-day infrastructure, drove outages.

With 4 consecutive years of EIA data (2020–2023), Rock Energy Cooperative's reliability record can be judged on trend rather than one isolated year. SAIDI has increased from 18.6 to 25.5 minutes, which may reflect either worsening weather exposure or delayed grid modernization.