Town of Groton electricity rates
Municipal utility · Massachusetts
Town of Groton is a city-owned municipal utility, governed locally rather than by the state commission, serving 5,010 homes in Massachusetts. Its residential customers pay an average of 17.86¢/kWh including fixed and delivery charges, 1% less than the U.S. average.
Rate basis: EIA-861 2025 annual data, adjusted to the 12 months ending 2026-07 using the state's price trend. This utility files EIA's short form, which reports total sales only, so the rate covers all customer classes.
What things cost on Town of Groton'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.
Town of Groton bill estimates
| Monthly use | At average all-in rate | Base tariff charges* |
|---|---|---|
| 500 kWh | $89.30 | $88.75 |
| 1,000 kWh | $178.60 | $177.25 |
| 1,500 kWh | $267.90 | $265.75 |
| 2,000 kWh | $357.20 | $354.25 |
*RESIDENTIAL RATE SCHEDULE - R1 (effective 2022-11-01, $6.25/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.
Town of Groton residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| RESIDENTIAL RATE SCHEDULE - R1 | 2022-11-01 | $6.25 | 16.50¢ first 500 kWh, 17.70¢ after |
| Time-of-Use Schedule - TUtime-of-use | 2022-11-01 | $6.25 | 11.3¢ (12am–4pm, 8pm–12am) · 47.3¢ (4pm–8pm) — summer weekdays |
| Time-of-Use Schedule (1000 KWh)-T2time-of-use | 2013-01-01 | $4.25 | 10.2¢ (12am–7am, 11pm–12am) · 13.1¢ (7am–11am, 7pm–11pm) · 15.5¢ (11am–7pm) — summer weekdays |
| RESIDENTIAL FARM RATE SCHEDULE - F1 | 2022-11-01 | $6.25 | 14.90¢ first 500 kWh, 60.00¢ after |
| HOUSE HEATING RATE SCHEDULE - HH | 2022-11-01 | $6.25 | 16.50¢ first 500 kWh, 17.70¢ after |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
Town of Groton rate history
2015–2025: +32% change in the average residential rate (13.60¢ → 17.89¢). Annual EIA-861 data.
Outages & reliability
Right now
Checking live outages…
Reliability history
| 2019 | Town of Groton | Massachusetts avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 52 | 121 | 266 |
| Outages per customer (SAIFI) | 0.56 | 0.92 | 1.34 |
| Average restoration time (CAIDI) | 93 min | — | — |
| Outage minutes excluding major storms | 52 | 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 Town of Groton's counties, customers averaged 3 hr 58 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| Middlesex | 238 | 64 | 19,321 | 2025-12-19 |
Town of Groton service area
Town of Groton serves Middlesex County in Massachusetts and 5 ZIP codes.
Middlesex
Programs, smart meters & solar
| Smart meters (AMI) for homes | 100% |
| Time-based rate programs | None reported |
| Homes on time-based rates | 4,431 |
| Net-metered solar homes | 0 reported |
Town of Groton at a glance
| Ownership | Municipal utility |
| Services | — |
| Retail revenue (2025) | $13,307,000 |
| Electricity sold (2025) | 74,391 MWh |
| Balancing authority | ISNE |
| EIA utility ID | 7715 |
Other utilities in Massachusetts
Frequently asked questions
What is Town of Groton's electricity rate?
Town of Groton residential customers pay an average of 17.86¢ per kWh, all charges included (EIA-861 2025 annual data, adjusted to the 12 months ending 2026-07 using the state's price trend). That's 41% below the Massachusetts average of 30.43¢ and 1% below the U.S. average.
What is the average Town of Groton electric bill?
About $221 a month. The average Town of Groton home uses 1,237 kWh a month. At 1,000 kWh the bill would be about $179.
How many customers does Town of Groton have?
Town of Groton serves 5,010 residential customers in Massachusetts, across 1 county.
How reliable is Town of Groton?
In 2019, the average Town of Groton customer was without power for 52 min (SAIDI) over 0.56 interruptions (SAIFI), including major storms. Excluding major event days it was 52 min. The Massachusetts average was 2 hr 1 min and the U.S. average 4 hr 26 min.
Does Town of Groton offer time-of-use rates?
Yes. The OpenEI rate database lists 2 time-of-use residential plans, including Time-of-Use Schedule - TU. Running big appliances off-peak can cut their cost. Pick the plan in the calculator above to see by how much.
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 Town of Groton before making decisions.