Liberty Utilities (Granite State Electri

What This Utility Data Tells You

Liberty Utilities (Granite State Electri is an investor-owned utility operating in New Hampshire under EIA identifier 26510. It reports service to approximately 34,035 customer accounts and generated about $0.10 billion in annual electric revenue, with a service footprint spanning 3 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 Liberty Utilities (Granite State Electri customer experienced 237.3 minutes of power interruptions, a metric called SAIDI (System Average Interruption Duration Index). That lands within the usual 120–180 minute national benchmark band, roughly on par with typical U.S. distribution-utility performance. Over the same period, SAIFI (outage events per customer) was 1.15, putting the typical customer at roughly 1 distinct interruption that year. Excluding major event days (hurricanes, ice storms), SAIDI drops to 153.8 minutes, the gap between that figure and the headline 237.3 reveals how much weather, not day-to-day infrastructure, drove outages.

The EIA dataset includes 4 years of continuous reporting (2020–2023) for Liberty Utilities (Granite State Electri, which lets you see whether reliability is trending up or down rather than judging from a single snapshot. SAIDI has increased from 151.5 to 237.3 minutes, which may reflect either worsening weather exposure or delayed grid modernization.