GreyStone Power Corporation

What This Utility Data Tells You

GreyStone Power Corporation is a member-owned electric cooperative operating in Georgia under EIA identifier 7090. It reports service to approximately 147,547 customer accounts and generated about $0.34 billion in annual electric revenue, with a service footprint spanning 26 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 GreyStone Power Corporation customer experienced 196.8 minutes of power interruptions, a metric called SAIDI (System Average Interruption Duration Index). That sits within the 120–180 minute national benchmark range, indicating performance typical of U.S. distribution utilities. Over the same period, SAIFI (outage events per customer) was 1.96, putting the typical customer at roughly 2 distinct interruptions that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 105.0 minutes, the gap between that figure and the headline 196.8 reveals how much weather, not day-to-day infrastructure, drove outages.

The EIA dataset includes 4 years of continuous reporting (2020–2023) for GreyStone Power Corporation, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has improved from 803.1 to 196.8 minutes over that window, a meaningful direction for prospective customers and regulators watching capital investment outcomes.