Editor: Katerine G., Editor & Data Researcher · Research & publishing: Electric Consumer Editorial Team · Data retrieved · Sources named on this page: EIA-861, EIA retail sales · How we got these numbers · Report an error
Unitil Energy Systems is an investor owned utility serving 81,452 customer accounts in New Hampshire; 68,602 of them are residential. Major event days make 84% of its yearly outage minutes (593 with them, 98 without).
Unitil Energy Systems: 602 kWh a month costs roughly $111 in energy at 18.51 ¢/kWh, -20.9% on the New Hampshire average of 23.40 ¢.
Major event days make 84% of its yearly outage minutes (593 with them, 98 without).
Major events weigh on Unitil Energy Systems: 593 minutes with them, 98 without, so 84% of the total comes from event days, 6.08 times the everyday figure.
SAIFI adds the frequency view: 1.00 interruptions a customer a year, 0.99 times the national median (1.01), with 98 minutes per interruption.
| Unitil Energy Systems, 2024 | Home | Business | Bill | SAIDI |
|---|---|---|---|---|
| Unitil Energy SystemsLowest in this table | 18.51 ¢/kWh | 14.07 ¢/kWh | $111at 602 kWh | 98 minSAIDI |
| New Hampshire average against this company, which is 1 of 4 on price | +4.89 ¢/kWhcompany 20.9% below | +5.33 ¢/kWhcompany 27.5% below | +$29a month at 602 kWh | -5 mincompany 5 above |
| Public Service Co of NH | 18.74 ¢/kWhcompany 1.3% below | 11.35 ¢/kWhcompany 23.9% above | $1131 more than company | 82 mincompany 16 above |
Compare 4 New Hampshire companies
No 2025 early-release row for Unitil Energy Systems; 2024 stays the latest year.
No 2025 line exists yet for Unitil Energy Systems, so 18.51 ¢/kWh and a SAIDI of 98 minutes (2024, 68,602 homes) are the latest figures.
Unitil Energy Systems serves 68,602 homes in New Hampshire. At 602 kWh a month that is about 75 kg of CO₂, or 894 kg a year, at the New Hampshire plant rate, state generation and not this utility: New Hampshire generation mix.
16.95 ¢ in 2015, 18.51 ¢ in 2024 (+9.2%); New Hampshire 18.50 to 23.40 ¢.
| Year | Unitil Energy Systems | Gap to New Hampshire residential | Gap to U.S. residential |
|---|---|---|---|
| 2015 | 16.95 | -1.55 | +4.30 |
| 2016 | 14.37 | -4.01 | +1.82 |
| 2017 | 15.38 | -3.82 | +2.49 |
| 2018 | 17.00 | -2.69 | +4.13 |
| 2019 | 17.68 | -2.37 | +4.67 |
| 2020 | 17.38 | -1.66 | +4.23 |
| 2021 | 18.15 | -1.70 | +4.49 |
| 2022 | 22.97 | -2.49 | +7.93 |
| 2023 | 28.50 | +0.35 | +12.50 |
| 2024 | 18.51 | -4.89 | +2.03 |
10 rows from EIA retail sales.
CSV113 min in 2015, 98 in 2024.
| Year | Unitil Energy Systems, no major events |
|---|---|
| 2015 | 113 |
| 2016 | 102 |
| 2017 | 113 |
| 2018 | 116 |
| 2019 | 83 |
| 2020 | 120 |
| 2021 | 103 |
| 2022 | 71 |
| 2023 | 91 |
| 2024 | 98 |
10 rows from EIA-861 survey.
CSV97.7 min, 0.98x the median reporter, rank 329 of 673.
Unitil Energy Systems, Reliability: EIA-861 survey.
CSVUnitil Energy Systems billed homes 16.95 ¢/kWh in 2015 and 18.51 ¢ in 2024, +9.2% in all, and lagged the New Hampshire average (+26.5%) by 17.3 points. Full-service customers alone pay 23.33 ¢ per EIA, against 18.51 ¢ for all rows: buyers of energy elsewhere pay Unitil Energy Systems for delivery only. Unitil Energy Systems's sharpest move came in 2024, -35.1%. The high is 28.50 ¢ (2023) and the low 14.37 ¢ (2016). 2024: -35.1% here, -16.9% for the New Hampshire average. SAIDI at Unitil Energy Systems (major events excluded) went from 113 minutes in 2015 to 98 in 2024, -13%, between 71 (2022) and 120 (2020). Unitil Energy Systems filed SAIDI under the national median in 5 of 10 years; its 2024 figure was 98 minutes, -2 from that year's median. 2017: 862 minutes with major events, 113 without, the widest gap of any year. Unitil Energy Systems has 0 cheaper and 3 higher-priced New Hampshire peers among 4 with 20,000+ homes. Next higher-priced, Public Service Co of NH, bills 18.74 ¢ (+0.24).
Price is the selling point in this record: 20.9% under the New Hampshire average, with 98 outage minutes close to the national median (0.98x).
Home accounts at Unitil Energy Systems went from 65,265 in 2015 to 68,602 in 2024, +5.1%. Business customers paid 0.76 times the home price in 2024 (14.07 against 18.51 ¢); the ratio was 0.78 in 2015. SAIFI went from 1.58 in 2015 to 1.00 in 2024, between 0.84 and 1.60.
By 2024 the average Unitil Energy Systems customer sat through 98 minutes of outage, against 184 in 2014 (−47%). Its best year was 2022 (71 min), its worst 2014 (184 min), across 11 filed years. Against a New Hampshire median of 93 minutes in 2024, Unitil Energy Systems was above the middle.
Corrected for inflation, a Unitil Energy Systems home paid 19.00 ¢/kWh in 2024 against 19.59 ¢ in 2013, −3.0%; the bill itself went 14.17 ¢ to 18.51 ¢ (+30.6%). A home using 1,000 kWh a month paid $2,350 for the year at the 2013 real price and $2,280 at the 2024 price. Place on home price: 3rd cheapest of 6 in 2013, 3rd of 7 in 2024 among New Hampshire utilities with 1,000+ homes.
Unitil Energy Systems at 98 min in 2024 and the New Hampshire median at 93.
Unitil Energy Systems: 19.00 ¢ in 2025 dollars (solid) and 18.51 ¢ as billed (dashed) in 2024.
| Year, Unitil Energy Syst | ¢ billed | ¢ in 2025 $ | Price place, Unitil Energy | SAIDI min | SAIFI | SAIDI place, Unitil Energy | New Hampshire median SAIDI |
|---|---|---|---|---|---|---|---|
| 2013 | 14.17 | 19.59 | 3 of 6 | – | – | – | – |
| 2014 | 15.80 | 21.49 | 4 of 6 | 184 | 1.73 | – | 184 |
| 2015 | 16.95 | 23.02 | 4 of 6 | 113 | 1.58 | – | 106 |
| 2016 | 14.37 | 19.27 | 3 of 6 | 102 | 0.98 | – | 139 |
| 2017 | 15.38 | 20.20 | 4 of 7 | 113 | 1.33 | – | 119 |
| 2018 | 17.00 | 21.80 | 4 of 7 | 116 | 1.20 | – | 120 |
| 2019 | 17.68 | 22.26 | 6 of 8 | 83 | 0.84 | – | 83 |
| 2020 | 17.38 | 21.62 | 5 of 6 | 120 | 1.60 | – | 101 |
| 2021 | 18.15 | 21.56 | 4 of 6 | 103 | 1.04 | – | 103 |
| 2022 | 22.97 | 25.27 | 3 of 6 | 71 | 0.88 | – | 79 |
| 2023 | 28.50 | 30.11 | 7 of 7 | 91 | 0.89 | – | 91 |
| 2024 | 18.51 | 19.00 | 3 of 7 | 98 | 1.00 | – | 93 |
Unitil Energy Systems, EIA utility 24590: EIA-861, CPI-U.
CSV| Unitil Energy Systems sector | Accounts | Rate ¢/kWh | Gap to New Hampshire ¢/kWh |
|---|---|---|---|
| Residential | 68,602 | 18.51 | -4.89 |
| Commercial | 12,687 | 14.07 | -5.33 |
| Year | Home accounts, Unitil Energy Systems | Home ¢ | Business ¢ | Ratio | SAIDI | SAIFI |
|---|---|---|---|---|---|---|
| 2015 | 65,265 | 16.95 | 13.18 | 0.78 | 113 | 1.58 |
| 2016 | 65,781 | 14.37 | 11.31 | 0.79 | 102 | 0.98 |
| 2017 | 66,168 | 15.38 | 11.98 | 0.78 | 113 | 1.33 |
| 2018 | 66,133 | 17.00 | 12.90 | 0.76 | 116 | 1.20 |
| 2019 | 66,586 | 17.68 | 13.19 | 0.75 | 83 | 0.84 |
| 2020 | 67,173 | 17.38 | 13.35 | 0.77 | 120 | 1.60 |
| 2021 | 67,643 | 18.15 | 14.01 | 0.77 | 103 | 1.04 |
| 2022 | 67,997 | 22.97 | 16.20 | 0.71 | 71 | 0.88 |
| 2023 | 68,062 | 28.50 | 19.16 | 0.67 | 91 | 0.89 |
| 2024 | 68,602 | 18.51 | 14.07 | 0.76 | 98 | 1.00 |
| Utility near Unitil Energy Systems on price | SAIDI min, gap to Unitil Energy Systems | Home ¢, gap to Unitil Energy Systems | Gap % to Unitil Energy Systems | Accounts, Unitil Energy Systems = 1 |
|---|---|---|---|---|
| 1. Unitil Energy Systems (this utility) | 98 | 18.51 | - | 1.00 |
| 2. Public Service Co of NH | -16 | +0.24 | +1.3% | 6.65 |
| 3. Liberty Utilities (Granite State Electri | -5 | +0.57 | +3.1% | 0.57 |
| 4. New Hampshire Elec Coop Inc | No data | +5.10 | +27.6% | 1.04 |
| Class at Unitil Energy Systems | Accounts | Of Unitil Energy Systems accounts | Of Unitil Energy Systems MWh sold | kWh a year per Unitil Energy Systems account |
|---|---|---|---|---|
| Residential | 68,602 | 84.2% | 43.2% | 7,223 |
| Commercial | 12,687 | 15.6% | 28.9% | 26,183 |
| Industrial and other | 163 | 0.20% | 27.9% | 1,966,442 |
| Unitil Energy Systems and its neighbours on price | SAIDI min, gap to Unitil Energy Systems | Home ¢, gap to Unitil Energy Systems | Accounts, Unitil Energy Systems = 1 |
|---|---|---|---|
| 1. Unitil Energy Systems (NH, this utility) | 98 | 18.51 | 1.00 |
| 2. Fitchburg Gas & Elec Light Co (MA) | -33 | +5.46 | 0.38 |
| Measure | Unitil Energy Systems | New Hampshire context | Unitil Energy Systems detail |
|---|---|---|---|
| Unitil Energy Systems home meters on AMI | 100.0% | New Hampshire 21.8% | 68,825 of 68,826 meters |
| Home meters, AMR (drive-by read) | 1 | New Hampshire figure not published | 0.0% of meters |
| Time-of-use rate for Unitil Energy Systems homes | Offered | 4 of 8 New Hampshire utilities offer one | 50 homes on dynamic pricing, 0.07% of 68,602 |
| Net-metered installations | 2,508 | 95% residential | 34.7 homes per 1,000 accounts, 13.5 kW average |
| kWh | Share of a 602 kWh month | Cost a month at 18.51 ¢ | vs U.S. | Cost a year |
|---|---|---|---|---|
| 250 | 42% | $46.27 | +$5.07 | $555 |
| 500 | 83% | $92.54 | +$10.14 | $1,111 |
| 750 | 125% | $138.82 | +$15.22 | $1,666 |
| 1,000 | 166% | $185.09 | +$20.29 | $2,221 |
| 1,500 | 249% | $277.63 | +$30.43 | $3,332 |
| 2,000 | 332% | $370.17 | +$40.57 | $4,442 |
| Measure, Unitil Energy System | No events | All events | Converted |
|---|---|---|---|
| SAIDI minutes | 97.7 | 593.4 | 1.63 h |
| SAIFI interruptions | 1.000 | 1.732 | 1.00 yr apart |
| CAIDI minutes | 97.7 | 342.6 | 1.63 h |
2 New Hampshire counties, region NPCC:
New Hampshire other states: 2 of 2 counties of Unitil Energy Systems drawn
Unitil Energy Systems: 2 counties listed by EIA-861, Census 2023 outlines.
CSV81,452 accounts in 2024: residential 68,602, commercial 12,687, industrial 163.
In 2024 homes paid 18.51 cents; against the New Hampshire average that is -20.9%.
SAIDI 97.7 min and SAIFI 1.00 a year, major events excluded; ratio to the national median 0.98, CAIDI 98 min.
2,508 installations with 34.0 MW, of which residential installations number 2,381.
602 kWh at 18.51 cents comes to about $111, energy only.
Rank 1 of 4 in New Hampshire on price, -20.9% against the state average; 0 charge less than 18.51 ¢.
Homes take 43.2% of 1,148,234 MWh, commercial accounts 28.9%, industrial and other 27.9%; the 12,687 commercial accounts use 26,183 kWh each, 3.6 times a home.
68,825 of 68,826 home meters are AMI, 100.0%. Unitil Energy Systems offers a home time-of-use rate; 50 customers use dynamic pricing, 0.07% of its homes.
2nd cheapest of 4 in 2015, 1st of 4 in 2024; its price rose 9.2% while New Hampshire rose 26.5%.
Its latest filing year is 2024, with 98 SAIDI minutes and 18.51 cents for homes.
Home prices nearest to Unitil Energy Systems at 18.51 ¢/kWh in 2024, among companies with a page here, any state.
3 home plan records, energy charges: 12.8 to 25.5 ¢/kWh.
Who offers time-of-use and tiered rates (17 Apr 2026 snapshot).