Nantucket Electric Co. electricity rates
Investor-owned utility · Massachusetts · NPCC region · ISONE
Nantucket Electric Co. is a for-profit, investor-owned utility regulated by the state utility commission, serving 2,215 homes in Massachusetts. Its residential customers pay an average of 37.60¢/kWh including fixed and delivery charges, 109% more than the U.S. average.
Rate basis: EIA-861M monthly utility data, 12 months ending 2026-07.
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Nantucket Electric Co. bill estimates
| Monthly use | At average all-in rate |
|---|---|
| 500 kWh | $188.00 |
| 1,000 kWh | $376.00 |
| 1,500 kWh | $564.00 |
| 2,000 kWh | $752.00 |
Nantucket Electric Co. residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| Limited Residential Electric Space Heating Etime-of-use | 2015-03-01 | $4.00 | 26.4¢ (12am–12am) — summer weekdays |
| Residential Regular R-1time-of-use | 2015-03-01 | $4.00 | 25.6¢ (12am–12am) — summer weekdays |
| Residential Time-of-Use R-4time-of-use | 2015-03-01 | $20.87 | 21.1¢ (12am–8am, 9pm–12am) · 27.1¢ (8am–9pm) — summer weekdays |
| Residential Low Income Regular R-2time-of-use | 2015-03-01 | $4.00 | 24.6¢ (12am–12am) — summer weekdays |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
Nantucket Electric Co. rate history
2015–2025: +62% change in the average residential rate (22.23¢ → 35.91¢). Annual EIA-861 data.
Outages & reliability
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Reliability history
| 2025 | Nantucket Electric Co. | Massachusetts avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 103 | 121 | 266 |
| Outages per customer (SAIFI) | 0.97 | 0.92 | 1.34 |
| Average restoration time (CAIDI) | 106 min | — | — |
| Outage minutes excluding major storms | 103 | 74 | 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 Nantucket Electric Co.'s counties, customers averaged 52 hr 15 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Nantucket | 3,135 | 37 | 1,860 | 2025-11-17 |
Nantucket Electric Co. service area
Nantucket Electric Co. serves Nantucket County in Massachusetts and 3 ZIP codes.
Nantucket
Cities: Nantucket
Programs, smart meters & solar
| Smart meters (AMI) for homes | 30% |
| Time-based rate programs | None reported |
| Net-metered solar homes | 313 |
Nantucket Electric Co. at a glance
| Ownership | Investor-owned utility |
| Services | Distribution |
| Commercial rate | 28.89¢/kWh |
| Industrial rate | 31.94¢/kWh |
| Retail revenue (2025) | $8,789,900 |
| Electricity sold (2025) | 25,106 MWh |
| Peak demand | 55 MW summer · 37 MW winter |
| Line losses | 8.4% |
| Balancing authority | ISNE |
| EIA utility ID | 13206 |
Other utilities in Massachusetts
Frequently asked questions
What is Nantucket Electric Co.'s electricity rate?
Nantucket Electric Co. residential customers pay an average of 37.60¢ per kWh, all charges included (EIA-861M monthly utility data, 12 months ending 2026-07). That's 24% above the Massachusetts average of 30.43¢ and 109% above the U.S. average.
What is the average Nantucket Electric Co. electric bill?
About $309 a month. The average Nantucket Electric Co. home uses 822 kWh a month. At 1,000 kWh the bill would be about $376.
How many customers does Nantucket Electric Co. have?
Nantucket Electric Co. serves 2,215 residential customers and 14,693 customers in total in Massachusetts, across 1 county.
How reliable is Nantucket Electric Co.?
In 2025, the average Nantucket Electric Co. customer was without power for 103 min (SAIDI) over 0.97 interruptions (SAIFI), including major storms. Excluding major event days it was 103 min. The Massachusetts average was 2 hr 1 min and the U.S. average 4 hr 26 min.
Does Nantucket Electric Co. offer time-of-use rates?
Yes. The OpenEI rate database lists 4 time-of-use residential plans, including Limited Residential Electric Space Heating E. Running big appliances off-peak can cut their cost. Pick the plan in the calculator above to see by how much.
Does Nantucket Electric Co. offer net metering for solar?
Nantucket Electric Co. had 313 residential net-metered customers in 2025 with 3.4 MW of capacity. 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 Nantucket Electric Co. before making decisions.