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 metric called SAIDI (System Average Interruption Duration Index). That places this utility well below the 120–180 minute national benchmark, signaling strong grid hardening and fast restoration practices. SAIFI — the average number of outage events per customer — was 0.34 for the same period, so customers statistically faced 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.

The EIA dataset includes 4 years of continuous reporting (2020–2023) for Rock Energy Cooperative, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has increased from 18.6 to 25.5 minutes, which may reflect either worsening weather exposure or delayed grid modernization. All figures on this page come directly from EIA Form 861, the federal annual electric power industry survey, with service territory ZIPs sourced from OpenEI — you can cross-reference them with your own utility bill or use them when comparing providers before relocating.