PowerPlantFactsEvidence report · prepared 2 September 2026https://powerplantfacts.com/entity/557
EIA plant 557
Preston · New London · CT
Tunnel
Operated by FirstLight Power Resources Services LLC
Published location
Where is Tunnel?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
41.555425, -72.041829
Open the interactive map ↗Map data © OpenStreetMap contributors
Capacity is not generation. Nameplate MW describes equipment; annual MWh describes recorded output. Proposed and retired units are not added to operating capacity.
2024 monthly net generation
| Month | Net generation |
|---|---|
| 1 | 1,382 MWh |
| 2 | 1,340 MWh |
| 3 | 1,440 MWh |
| 4 | 1,280 MWh |
| 5 | 1,380 MWh |
| 6 | 444 MWh |
| 7 | 114 MWh |
| 8 | 8 MWh |
| 9 | 5 MWh |
| 10 | 0 MWh |
| 11 | 0 MWh |
| 12 | 329 MWh |
Operating generators
| ID | Technology | Fuel | MW | Status |
|---|---|---|---|---|
| 10 | Petroleum Liquids | JF | 18.5 | SB |
| 1 | Conventional Hydroelectric | WAT | 1 | OP |
| 2 | Conventional Hydroelectric | WAT | 1 | OP |
Continue exploring
Similar-capacity plants in the same state
Identity, technology and limitations
EIA plant ID
557
Sector
IPP Non-CHP
Water source
Quinebaug
Data edition
2024-final