Appalachian Power Co

What This Utility Data Tells You

Appalachian Power Co is an investor-owned utility operating in Virginia under EIA identifier 733. It reports service to approximately 545,980 customer accounts and generated about $1.82 billion in annual electric revenue, with a service footprint spanning 500 ZIP codes. Investor ownership puts this utility under the regulatory authority of the state public utility commission, which reviews its rate requests and reliability record.

In 2023, the average Appalachian Power Co customer experienced 429.3 minutes of power interruptions, the industry-standard SAIDI metric (System Average Interruption Duration Index). That exceeds the 120–180 minute national benchmark by a wide margin, a pattern often tied to severe weather exposure, older infrastructure, or longer repair windows. Over the same period, SAIFI (outage events per customer) was 1.65, putting the typical customer at roughly 2 distinct interruptions that year. Strip out major event days (hurricanes, ice storms) and SAIDI falls to 356.6 minutes; the difference from the headline 429.3 shows how much of the outage total came from weather rather than everyday grid issues.

The EIA dataset includes 4 years of continuous reporting (2020–2023) for Appalachian Power Co, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. Over that span, SAIDI rose from 390.4 to 429.3 minutes, possibly reflecting tougher weather years or grid upgrades that have not caught up yet.