Show on map
- Clean firm
- Operating
- 10 · 100 · 1,000 MW
Map
- Clean firm
- Operating
Shepaug: location and 2 exact-grade projects within 25 km. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Shepaug
Power plant · Hydro
Key facts
Power plant · Hydroran 29% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 1955
- Net generation, 2025
- 93,324 MWh
- Grid
- 69 kV to Connecticut Light & Power Co (ISNE)
- Location
- New Haven County, Connecticut
- Operated by
- FirstLight Power Resources Services LLC
Output
Details
Who’s behind it
Interested in this project?
Set an alert Book a call Join the beta
Our team gets you what you need.
Beta: private project space · data room · readiness check
- Technology
- Hydro source: “Conventional Hydroelectric”
- Age
- 71 years since 1955
All 6 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
| Attribute | Value |
|---|---|
| Gem |
|
| Grid |
|
| Fuel burned (MMBtu), 2025 | 318,423 |
| Capacity factor, 2025 | 0.286 |
| Net generation (MWh), 2025 | 93,324 |
| Balancing authority code | ISNE |
Ownership
2 companies2| Company | Role | Share | As of | Source |
|---|---|---|---|---|
| FirstLight Power Resources Services LLC | Operator | EIA-860M | ||
| FirstLight Hydro Generating Company | Owner | 100.0% | 31 Dec 2025 | EIA-860 |
Timeline
- In service · EIA-860M
Sources
5 sourcesSources EIA-860M · GEM · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory · EIA-860 Annual Electric Generator Report — Schedule 4 Owner (ownership shares per generator), plus Plant/Generator schedules
Sources
- EIA-860M Preliminary Monthly Electric Generator Inventory
- Global Energy Monitor — Global Integrated Power Tracker (unit-level power plants, eight technologies, all statuses)Global Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
- EIA Open Data bulk file — Electricity (ELEC.zip; monthly plant net generation and fuel consumption since 2001)Source: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)
- EIA-860M Preliminary Monthly Electric Generator Inventory
- EIA-860 Annual Electric Generator Report — Schedule 4 Owner (ownership shares per generator), plus Plant/Generator schedules
Around this plant
Nearby
within 25 km| Project | Kind | Away | MW |
|---|---|---|---|
| Shepaug Postponed | Oil | 0.0 km | 49.2 |
| Candlewood Solar Postponed | Solar | 19.1 km | 25 |