IOU · New Hampshire · EIA 26510

Liberty Utilities (Granite State Electri

IOU · New Hampshire · 34K customers. According to the U.S. Energy Information Administration's EIA Form 861, reliability for 2023 shows SAIDI 237 minutes/customer.

Reliability detail ↓ New Hampshire utilities

Reliability verdict

Liberty Utilities (Granite State Electri shows near-benchmark chronic reliability in 2023: 154 minutes SAIDI excluding major events across 34K customers.

237 min
SAIDI 2023
1.15
SAIFI 2023
154 min
SAIDI ex-MED
34K
Customers

Chronic reliability judged on SAIDI excluding major event days when reported (IEEE 1366). Source: EIA Form 861 · August 2026.

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Signature read: mid-cohort SAIDI between the 96 and 258 minute tercile cuts.

What mid-pack Liberty Utilities (Granite State Electri filings show

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.

D
Reliability Score
41/100
Liberty Utilities (Granite State Electri · 3 of 3 dimensions reported

Based on this utility's own EIA Form 861 reliability record -- baseline (major-event- excluded) outage duration, total outage duration, and outage frequency -- each benchmarked against every reporting utility nationwide. Not a measure of electricity rates or customer service, which this portal does not track.

Baseline Reliability F 153.8 min/yr
SAIDI excluding major-event days — day-to-day grid performance
Total Outage Duration D 237.3 min/yr
SAIDI including storms and major events — the full-year experience
Outage Frequency C 1.15/yr
SAIFI — average number of interruptions per customer per year
SAIDI vs. national mean (341 min) 31.6%

237 outage minutes per customer annually

Liberty Utilities (Granite State Electri SAIDI

Power-out minutes per year (2023)

237 SAIDI237 SAIDINat. avg 341341SAIDI237SAIDI

Excellent

SAIDI by year (2020-2023)

Minutes per customer-year · EIA Form 861

Year-by-year SAIDI for Liberty Utilities (Granite State Electri from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.

Source: U.S. EIA Form 861 As of August 2026

Liberty Utilities (Granite State Electri SAIDI trend

0 50 100 150 200 250 2020 2021 2022 2023 151.5 165.3 201.8 237.3
Year-by-year SAIDI from the same EIA filings as the table below. Lower is better; major-event years can spike the headline figure.

Liberty Utilities (Granite State Electri vs the nationwide SAIDI distribution

Where this utility's headline SAIDI sits among every EIA Form 861 utility with a reported figure

237 Around the middle fewer outage minutes than 37% of 911 utilities

Utilities nationwide, banded by latest reported SAIDI (minutes)

Each bar is a band; taller bars hold more utilities. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source U.S. EIA Form 861 reliability filings · August 2026

Price vs. reliability

Where Liberty Utilities (Granite State Electri sits on price vs. reliability

Among the 781 U.S. utilities large enough to report both revenue per customer and a recent outage record, Liberty Utilities (Granite State Electri charges more per customer than 77% of them, and is more reliable (lower SAIDI) than 40% of them, placing it in the quadrant where it pays more but is LESS reliable, a premium price without a reliability payoff. Revenue per customer and outage minutes are independent figures: paying more does not guarantee fewer outages.

Liberty Utilities (Granite State Electri vs. a 40-utility national peer sample, price percentile vs. reliability percentile. Scatter plot of 41 data points (bubble-sized by third dimension). 050100150 050100150 Best valuePays for itCheap + riskyWorst deal Price percentile Reliability percentile Point, Price percentile: 0 · Reliability percentile: 37Point, Price percentile: 3 · Reliability percentile: 50Point, Price percentile: 5 · Reliability percentile: 43Point, Price percentile: 8 · Reliability percentile: 85Point, Price percentile: 10 · Reliability percentile: 57Point, Price percentile: 13 · Reliability percentile: 92Point, Price percentile: 15 · Reliability percentile: 20Point, Price percentile: 18 · Reliability percentile: 30Point, Price percentile: 20 · Reliability percentile: 25Point, Price percentile: 23 · Reliability percentile: 80Point, Price percentile: 25 · Reliability percentile: 12Point, Price percentile: 28 · Reliability percentile: 60Point, Price percentile: 30 · Reliability percentile: 70Point, Price percentile: 33 · Reliability percentile: 67Point, Price percentile: 35 · Reliability percentile: 7Point, Price percentile: 38 · Reliability percentile: 0Point, Price percentile: 40 · Reliability percentile: 77Point, Price percentile: 43 · Reliability percentile: 2Point, Price percentile: 45 · Reliability percentile: 27Point, Price percentile: 48 · Reliability percentile: 22Point, Price percentile: 50 · Reliability percentile: 52Point, Price percentile: 53 · Reliability percentile: 47Point, Price percentile: 55 · Reliability percentile: 97Point, Price percentile: 57 · Reliability percentile: 100Point, Price percentile: 60 · Reliability percentile: 5Point, Price percentile: 63 · Reliability percentile: 65Point, Price percentile: 65 · Reliability percentile: 55Point, Price percentile: 68 · Reliability percentile: 10Point, Price percentile: 70 · Reliability percentile: 15Point, Price percentile: 73 · Reliability percentile: 35Point, Price percentile: 75 · Reliability percentile: 82Point, Price percentile: 78 · Reliability percentile: 17Point, Price percentile: 83 · Reliability percentile: 95Point, Price percentile: 85 · Reliability percentile: 45Point, Price percentile: 88 · Reliability percentile: 32Point, Price percentile: 90 · Reliability percentile: 87Point, Price percentile: 93 · Reliability percentile: 72Point, Price percentile: 95 · Reliability percentile: 90Point, Price percentile: 98 · Reliability percentile: 75Point, Price percentile: 100 · Reliability percentile: 62Liberty Utilities (Granite State Electri, Price percentile: 77 · Reliability percentile: 40
Liberty Utilities (Granite State Electri vs. a 40-utility national peer sample, price percentile vs. reliability percentile.

Revenue per customer: $3,084/year · Latest SAIDI: 237.3 minutes/year.

SAIDI 2023 breakdown: 237.3 minutes

Reliability Trend (2020–2023)

Year SAIDI (min) SAIDI nMED SAIFI Customers
2020 151.5 100.9 1.180 45,192
2021 165.3 108.7 1.040 45,468
2022 201.8 84.3 1.140 45,697
2023 237.3 153.8 1.152 45,637

SAIDI nMED = SAIDI without major event days. Source: EIA Form 861.

Service Area

Liberty Utilities (Granite State Electri serves 3 ZIP codes in New Hampshire.

030730374903756

Frequently Asked Questions

How reliable is Liberty Utilities (Granite State Electri?

Liberty Utilities (Granite State Electri had a SAIDI of 237.3 minutes in 2023. Leaving aside major weather events, that figure sits close to the national average.

What type of utility is Liberty Utilities (Granite State Electri?

Liberty Utilities (Granite State Electri is classified as a IOU serving New Hampshire.

How many customers does Liberty Utilities (Granite State Electri serve?

Liberty Utilities (Granite State Electri serves approximately 34,035 customers in New Hampshire.

How has Liberty Utilities (Granite State Electri's reliability changed over time?

Liberty Utilities (Granite State Electri has 4 years of reliability data (2020-2023). SAIDI has held roughly steady across these years. Review the trend table above for year-by-year detail.

Utility Profile

Type
IOU
Customers
34,035
Annual Revenue
$0.10B
EIA ID
26510

Explore

Utilities with similar EIA profiles

Two cross-state peer sets for Liberty Utilities (Granite State Electri. Same-state SAIDI neighbors stay in Read-with below; these neighborhoods are nearest other-state utilities with at least 10,000 reported customers.

Similar customer count

Nearest utilities by Form 861 customers (34K here), outside New Hampshire.

Piedmont Electric Member Corp 34K · NC HILCO Electric Cooperative, Inc. 34K · TX PUD No 1 of Clallam County 34K · WA City of Bristol - (TN) 34K · TN

Similar chronic SAIDI

Nearest utilities by latest SAIDI minutes (237.3 here), outside New Hampshire, excluding the customer-peer set.

City of Lexington - (NC) 237.7 min · NC Trico Electric Cooperative Inc 237.9 min · AZ Victory Electric Coop Assn Inc 238.5 min · KS Norris Public Power District 239.0 min · NE

Source: U.S. Energy Information Administration Form 861 annual electric power industry survey · ZIP service territory: OpenEI. Disclaimer: informational only, not professional advice. See full disclaimer · methodology.