Summary of Electricity Activity in Groton, CT
Summary of Groton, CT Generation
Groton, CT is ranked #1,869 out of 5,784 U.S. cities nationwide and #10 out of 67 Connecticut cities in terms of total annual net electricity generation.
| Annual Generation | 15.6 GWh |
|---|---|
| Annual Consumption | 2.8 M MMBtu |
| Last Update | Sep 2025 |
| Power Plants | 8 |
| Companies on File | 5 |
| Power Plants in 50 Mile Radius | 257 |
| Power Plants in 100 Mile Radius | 1,173 |
Map of Top Producing Plants in Groton, CT
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Annual Net Generation From natural gas power
187.6 GWh
National Rank in Terms of natural gas Net Electricity Generation
#619 /1,479 U.S. Cities
State Rank in Terms of natural gas Net Electricity Generation
#7 /30 Connecticut Cities
Net Generation by Fuel Source
Net Generation by Fuel Source Breakdown
| State Rank | National Rank | Generation | Fuel Consumption | |
|---|---|---|---|---|
| All | #10 / 67 | #1869 / 5784 | 196.90 GWh | 2.85 M MMBtu |
| Natural Gas | #7 / 30 | #619 / 1479 | 187.62 GWh | 2.62 M MMBtu |
| Distillate Fuel Oil | #3 / 13 | #145 / 1040 | 8.01 GWh | 222.01 k MMBtu |
| Solar | #40 / 43 | #2910 / 3060 | 1.28 GWh | 4.51 k MMBtu |
Monthly Net Generation for Groton, CT
Power Plants in Groton, CT
| Plant | Utility Name | Generation | Consumption | Fuel Types |
|---|---|---|---|---|
| Pfizer Groton Plant | Pfizer Inc | 77.5 GWh | 1.9 M MMBtu | Natural Gas : 91.4% Distillate Fuel Oil : 8.6% |
| Naval Sub Base New London Fuel Cell | Groton Station Fuel Cell, LLC | 43.6 GWh | 288.3 k MMBtu | Natural Gas |
| Subase Microgrid Project | Connecticut Mun Elec Engy Coop | 43.1 GWh | 327.3 k MMBtu | Natural Gas |
| Pfizer Groton Fuel Cell | Groton Fuel Cell 1 LLC | 30.1 GWh | 270.1 k MMBtu | Natural Gas |
| CMEEC - Navy NE Trident | Tesla Inc. | 1.3 GWh | 4.5 k MMBtu | Solar |
| Bridge Street 1 & 2 | Connecticut Mun Elec Engy Coop | 458.0 MWh | 5.3 k MMBtu | Distillate Fuel Oil |
| Water Treatment 1 & 2 | Connecticut Mun Elec Engy Coop | 434.0 MWh | 4.4 k MMBtu | Distillate Fuel Oil |
| Gary Court 1 & 2 | Connecticut Mun Elec Engy Coop | 422.0 MWh | 4.6 k MMBtu | Distillate Fuel Oil |
Electricity Generation for Neighboring Cities
| National Rank | City | Net Generation | # Power Plants |
|---|---|---|---|
| #2799 | Ashaway | 47.3 GWh | 3 |
| #4547 | Conning Towers-Nautilus Park | 5.0 GWh | 1 |
| #5584 | Fishers Island | 151.0 MWh | 2 |
| #3179 | Gales Ferry | 27.8 GWh | 2 |
| #3876 | Mashantucket | 10.8 GWh | 1 |
| #3295 | New London | 23.7 GWh | 2 |
| #3282 | Norwich | 24.2 GWh | 12 |
| #1717 | Oxoboxo River | 252.7 GWh | 4 |
| #30 | Waterford | 16.3 TWh | 1 |
| #3714 | Westerly | 13.9 GWh | 2 |
* Net Generation data is based on the last 12 months since Sep 2025