21.72¢
per kWh, 2025
[ Unitil Energy Systems / NH ]
Unitil Energy Systems electricity rates in New Hampshire
NO RATE CASE ON FILE · DATA 2025
change in average rate, 2024→2025
−6.9%
vs 2024
69,081
residential customers
+19.5%
since 2020
What your bill becomes
Bill today
No change on file
Difference / month · / year
Estimated at Unitil Energy Systems's average effective residential rate (21.72¢/kWh, EIA, all charges included). Your tariff, fees and taxes differ.
Rate history 2015–2025
| Year | ¢/kWh | Change | Customers |
|---|---|---|---|
| 2015 | 18.68¢ | — | 65,265 |
| 2016 | 15.52¢ | −16.9% | 65,781 |
| 2017 | 16.48¢ | +6.2% | 66,168 |
| 2018 | 18.09¢ | +9.8% | 66,133 |
| 2019 | 18.70¢ | +3.4% | 66,586 |
| 2020 | 18.17¢ | −2.8% | 67,173 |
| 2021 | 18.87¢ | +3.9% | 67,643 |
| 2022 | 24.23¢ | +28.4% | 67,997 |
| 2023 | 32.47¢ | +34.0% | 68,062 |
| 2024 | 23.33¢ | −28.1% | 68,602 |
| 2025 | 21.72¢ | −6.9% | 69,081 |
How this compares
24.53¢
New Hampshire average, 2025
−11.5%
Unitil Energy Systems vs NH 2025 average
+26.1%
vs US 2025 average
#4
priciest in NH
Serves 2 counties in New Hampshire: Merrimack, Rockingham. 39 ZIP codes.
What the numbers show
Since 2015, Unitil Energy Systems's average residential rate has gone from 18.68¢ to 21.72¢ per kWh: +16.3% over 10 years, or about +1.5% a year. It rose in 6 of the 10 years we can compare, and the biggest one-year increase was +34.0% in 2023. The largest drop was −28.1% in 2024.
For a home using 640 kWh a month, the New Hampshire average, Unitil Energy Systems's 2025 rate works out to about $1,668 a year, $216 less than at New Hampshire's average rate of 24.53¢. Of the 4 New Hampshire utilities in our data with a 2025 price, it is the least expensive.
Unitil Energy Systems served 65,265 homes in 2015 and 69,081 in 2025 (+5.8%), about 10% of New Hampshire's residential electricity customers.
Who sets Unitil Energy Systems's rates
Unitil Energy Systems is investor-owned, so it can change its base rates only by filing a rate case with the New Hampshire Public Utilities Commission. The commission holds hearings and takes public comment before it rules, and it usually approves less than the company asks for. Fuel and other pass-through charges can change between rate cases.
Commission contact: New Hampshire Public Utilities Commission. How we calculate every figure on this page: methodology.
Questions
Is Unitil Energy Systems raising rates in 2026?
No rate case for Unitil Energy Systems is on file with the New Hampshire Public Utilities Commission in our tracker. Its average residential rate moved −6.9% from 2024 to 2025. We check the commission docket monthly.
What does Unitil Energy Systems charge per kWh?
Unitil Energy Systems's average effective residential rate was 21.72¢ per kWh in 2025 (EIA-861, revenue divided by sales, all charges included). New Hampshire's 2025 average was 24.53¢.
How much have Unitil Energy Systems rates gone up in five years?
+19.5% between 2020 and 2025, against +39.6% for New Hampshire as a whole over the latest five-year window.
How many customers does Unitil Energy Systems have in New Hampshire?
69,081 residential customers in 2025, across 2 counties including Merrimack, Rockingham, according to the EIA-861 survey.
Where do these numbers come from?
Rates and customer counts are from the US Energy Information Administration's annual EIA-861 survey, which every US utility files. Nothing here is a utility bill; use it to understand the direction and size of changes.
Sources
- EIA-861 Sales to Ultimate Customers, 2015–2025 (released 2026-10-07)
- EIA-861M monthly state averages through Jul 2026
- NREL utility-by-ZIP lookup (2024)