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Derby Hydro — Power plant · Hydro · McCallum Enterprises I LPShepaug — Postponed · Oil · CT · 49.2 MW · 13.2 mi away
  • Clean firm
  • Operating
  • 10 · 100 · 1,000 MW

Derby Hydro

Power plant · Hydro

Key facts

Power plant · Hydroran 30% of 2025 Operating
Capacity
Capacity: sourceEIA-860M · Open licenseMW
Commissioned
1989
Net generation, 2025
22,667 MWh
Grid
14 kV to United Illuminating Co (ISNE)
Location
Fairfield County, Connecticut
Operated by
McCallum Enterprises I LPSourceEIA-860M Preliminary Monthly Electric Generator Inventory

Output

Net generation MWh by year, 2001 to 2025

Operations detail

Details

Who’s behind it

No companies named in filings yet.

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Technology
Hydro source: “Conventional Hydroelectric”
Age
37 years since 1989
All 6 attributes from EIA-860M Preliminary Monthly Electric Generator Inventory
AttributeValue
Grid
Nerc region
NPCC
Report year
2025
Grid voltage kv
13.80
Transmission owner
United Illuminating Co
Balancing authority code
ISNE
Balancing authority name
ISO New England Inc.
Eia status
By code
OP
Mw
8
Units
2
SB
Mw
0.600
Units
2
Standby mw
0.600
Status rule
some_units_idle
In service mw
8.60
Out of service mw
0
Fuel burned (MMBtu), 202577,339
Capacity factor, 20250.301
Net generation (MWh), 202522,667
Balancing authority codeISNE

Timeline

  • In service · EIA-860M

Sources

3 sources

Sources EIA-860M · EIA · EIA-860M Preliminary Monthly Electric Generator Inventory

Sources

Every source and license · Attribution

View at source

Around this plant

Nearby

within 15 mi
ProjectKindAwayMW
Shepaug Postponed Oil 13.2 mi 49.2

Sources EIA-860M

Sources

  • EIA-860MOpen license · retrieved Nov 4, 2026

Attribution