Groton Dept of Utilities electricity rates
Municipal utility · Connecticut · NPCC region · ISONE
Groton Dept of Utilities is a city-owned municipal utility, governed locally rather than by the state commission, serving 12,596 homes in Connecticut. Its residential customers pay an average of 18.97¢/kWh including fixed and delivery charges, 5% more than the U.S. average.
Rate basis: EIA-861M monthly utility data, 12 months ending 2026-07.
What things cost on Groton Dept of Utilities'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.
Groton Dept of Utilities bill estimates
| Monthly use | At average all-in rate | Base tariff charges* |
|---|---|---|
| 500 kWh | $94.85 | $94.74 |
| 1,000 kWh | $189.70 | $162.98 |
| 1,500 kWh | $284.55 | $231.22 |
| 2,000 kWh | $379.40 | $299.46 |
*Residential (effective 2025-04-01, $26.50/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.
Groton Dept of Utilities residential rate plans
| Plan | Effective | Customer charge | Energy charges |
|---|---|---|---|
| Residential | 2025-04-01 | $26.50 | 13.65¢ |
| Residential, GRT | 2025-04-01 | $27.00 | 13.73¢ |
Source: OpenEI U.S. Utility Rate Database. Rates change. Check the linked tariff or your bill for current figures.
Groton Dept of Utilities rate history
2015–2025: +13% change in the average residential rate (15.93¢ → 18.05¢). Annual EIA-861 data.
Outages & reliability
Right now
Checking live outages…
Reliability history
| 2025 | Groton Dept of Utilities | Connecticut avg | U.S. avg |
|---|---|---|---|
| Outage minutes per customer (SAIDI) | 71 | 184 | 266 |
| Outages per customer (SAIFI) | 0.36 | 0.93 | 1.34 |
| Average restoration time (CAIDI) | 3 hr 18 min | — | — |
| Outage minutes excluding major storms | 71 | 77 | 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 Groton Dept of Utilities's counties, customers averaged 69 min without power.
| County | Outage min/customer | Days with outages | Peak customers out | Worst day |
|---|---|---|---|---|
| New London | 69 | 33 | 3,124 | 2025-04-28 |
Groton Dept of Utilities service area
Groton Dept of Utilities serves New London County in Connecticut and 5 ZIP codes.
New London
Cities: Ledyard, Groton, Conning Towers-Nautilus Park, Long Hill, Mystic, Noank, Poquonock Bridge, Gales Ferry
Programs, smart meters & solar
| Smart meters (AMI) for homes | 100% |
| Time-based rate programs | None reported |
| Net-metered solar homes | 822 |
| Residential efficiency incentives paid (2025) | $803,000 |
| Residential energy saved by programs | 391 MWh |
Groton Dept of Utilities at a glance
| Ownership | Municipal utility |
| Services | Distribution, Bundled |
| Commercial rate | 16.76¢/kWh |
| Industrial rate | 13.29¢/kWh |
| Retail revenue (2025) | $64,910,600 |
| Electricity sold (2025) | 407,739 MWh |
| Peak demand | 77 MW summer · 71 MW winter |
| Line losses | 2.9% |
| Balancing authority | ISNE |
| EIA utility ID | 7716 |
| Website | www.grotonutilities.com |
Other utilities in Connecticut
Frequently asked questions
What is Groton Dept of Utilities's electricity rate?
Groton Dept of Utilities residential customers pay an average of 18.97¢ per kWh, all charges included (EIA-861M monthly utility data, 12 months ending 2026-07). That's 32% below the Connecticut average of 27.99¢ and 5% above the U.S. average.
What is the average Groton Dept of Utilities electric bill?
About $140 a month. The average Groton Dept of Utilities home uses 740 kWh a month. At 1,000 kWh the bill would be about $190.
How many customers does Groton Dept of Utilities have?
Groton Dept of Utilities serves 12,596 residential customers and 14,193 customers in total in Connecticut, across 1 county.
How reliable is Groton Dept of Utilities?
In 2025, the average Groton Dept of Utilities customer was without power for 71 min (SAIDI) over 0.36 interruptions (SAIFI), including major storms. Excluding major event days it was 71 min. The Connecticut average was 3 hr 4 min and the U.S. average 4 hr 26 min.
Does Groton Dept of Utilities offer net metering for solar?
Groton Dept of Utilities had 822 residential net-metered customers in 2025 with 4.3 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 Groton Dept of Utilities before making decisions.