Unitil Energy Systems electricity rates
Investor-owned utility · New Hampshire · NPCC region · ISONE
Unitil Energy Systems is a for-profit, investor-owned utility regulated by the state utility commission, serving 24,452 homes in New Hampshire. Its residential customers pay an average of 24.93¢/kWh including fixed and delivery charges, 39% more than the U.S. average.
Rate basis: EIA-861M monthly utility data, 12 months ending 2026-07.
What things cost on Unitil Energy Systems's rate
Popular — tap to add, then add more to compare:
Add as many devices as you like to compare them side by side. Search again to add another, or use Duplicate to compare two settings.
Unitil Energy Systems bill estimates
| Monthly use | At average all-in rate | Base tariff charges* |
|---|---|---|
| 500 kWh | $124.65 | $75.51 |
| 1,000 kWh | $249.30 | $142.00 |
| 1,500 kWh | $373.95 | $208.49 |
| 2,000 kWh | $498.60 | $274.98 |
*Schedule D Domestic Rate (effective 2015-06-01, $10.27/month customer charge), energy and fixed charges from the OpenEI Utility Rate Database. Riders, fuel adjustments and taxes are often billed separately, so real bills usually land closer to the all-in column. Calculate your bill.
Unitil Energy Systems residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| Schedule D Domestic Rate | 2015-06-01 | $10.27 | 12.80¢ first 250 kWh, 13.30¢ after |
| Standard Residential Rate R-1 | 2015-01-01 | $7.00 | 25.55¢ |
| Low Income Residential Optional Fuel Assistance Rate R-2 | 2015-01-01 | $7.00 | 24.85¢ |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
Unitil Energy Systems rate history
2015–2025: +16% change in the average residential rate (18.68¢ → 21.72¢). Annual EIA-861 data.
Outages & reliability
Right now
Checking live outages…
Reliability history
| 2025 | Unitil Energy Systems | New Hampshire avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 98 | 231 | 266 |
| Outages per customer (SAIFI) | 1.36 | 1.45 | 1.34 |
| Average restoration time (CAIDI) | 72 min | — | — |
| Outage minutes excluding major storms | 91 | 135 | 121 |
Outages in counties served (2025)
From ORNL EAGLE-I, which tracks customers without power every 15 minutes. These counts cover every utility in each county. Weighted across Unitil Energy Systems's counties, customers averaged 2 hr 53 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Rockingham | 187 | 49 | 18,430 | 2025-05-18 |
| Merrimack | 154 | 49 | 8,480 | 2025-03-07 |
Unitil Energy Systems service area
Unitil Energy Systems serves 2 counties in New Hampshire and 39 ZIP codes.
Merrimack, Rockingham
Cities: Concord, East Concord, Salem, Hampton, Exeter, Seabrook, Hampstead, Franklin, Bow Bog, Plaistow, Pembroke, Stratham Station, Atkinson, Kingston, Hopkinton, South Hooksett, Suncook, Northfield, North Hampton, Epsom, Danville, Newton, Deerfield, Hooksett, Boscawen, Fremont, Greenland, Brentwood, Tilton-Northfield, Chichester, Hampton Beach, Andover, Canterbury, Kensington, Hampton Falls, East Kingston, Webster, Pittsfield, Contoocook, Salisbury
Programs, smart meters & solar
| Smart meters (AMI) for homes | 100% |
| Time-based rate programs | Time-of-use rates |
| Homes on time-based rates | 61 |
| Net-metered solar homes | 2,593 |
| Home batteries paired with solar | 104 |
| Homes in demand response (e.g. thermostat rebates) | 658 |
| Residential efficiency incentives paid (2025) | $2,186,604 |
| Residential energy saved by programs | 4,791 MWh |
Unitil Energy Systems at a glance
| Ownership | Investor-owned utility |
| Services | Generation, Distribution |
| Commercial rate | 23.99¢/kWh |
| Industrial rate | 19.96¢/kWh |
| Retail revenue (2025) | $54,603,600 |
| Electricity sold (2025) | 252,689 MWh |
| Peak demand | 297 MW summer · 202 MW winter |
| Line losses | 2.6% |
| Balancing authority | ISNE |
| EIA utility ID | 24590 |
| Website | www.puc.nh.gov/Electric/coreenergyefficiencyprograms.htm |
Other utilities in New Hampshire
Frequently asked questions
What is Unitil Energy Systems's electricity rate?
Unitil Energy Systems residential customers pay an average of 24.93¢ per kWh, all charges included (EIA-861M monthly utility data, 12 months ending 2026-07). That's 7% below the New Hampshire average of 26.67¢ and 39% above the U.S. average.
What is the average Unitil Energy Systems electric bill?
About $150 a month. The average Unitil Energy Systems home uses 601 kWh a month. At 1,000 kWh the bill would be about $249.
How many customers does Unitil Energy Systems have?
Unitil Energy Systems serves 24,452 residential customers and 82,001 customers in total in New Hampshire, across 2 counties.
How reliable is Unitil Energy Systems?
In 2025, the average Unitil Energy Systems customer was without power for 98 min (SAIDI) over 1.36 interruptions (SAIFI), including major storms. Excluding major event days it was 91 min. The New Hampshire average was 3 hr 51 min and the U.S. average 4 hr 26 min.
Does Unitil Energy Systems offer time-of-use rates?
Unitil Energy Systems reports offering time-of-use rates to residential customers. Running big appliances off-peak can cut their cost. Pick the plan in the calculator above to see by how much.
Does Unitil Energy Systems offer net metering for solar?
Unitil Energy Systems had 2,593 residential net-metered customers in 2025 with 21.2 MW of capacity and 104 solar-paired batteries. Estimate solar savings at this utility's rate.
Sources: EIA-861 2025 and EIA-861M (through July 2026), OpenEI URDB, ORNL EAGLE-I, U.S. Census. Methodology. Spot an error? Rates change often, so confirm with Unitil Energy Systems before making decisions.