Battery storage interconnection queue in Connecticut

Before a new power plant or battery can connect to the US grid, it joins a queue for studies and an interconnection agreement. Most requests never get built. This shows every request: active, built and withdrawn.

Requests shown2347 MW

Active in queue347 MW2 requests

Agreement signed347 MW2 requests

Withdrawn578,249 MW never built

Find requests

Project, developer, substation or county State Grid region Technology Status Year joined Sort

Clear

Source: Lawrence Berkeley National Laboratory, Queued Up interconnection queue data (data through end of 2025). Map points are county centres, not exact sites.

Map

Loading requests…

In studyAgreement signedUnder constructionBuiltSuspendedWithdrawn

Requests

2 requests

Project	Capacity	Status	Location	Region	Queued	Online
Naugatuck Avenue Battery Storage Battery storage	205 MW	Agreement signed	New Haven, CT	ISO-NE	Jan 2021	target 2027
Battery Storage Battery storage	142 MW	Agreement signed	Litchfield, CT	ISO-NE	Oct 2022	target 2029

Capacity in the queue by state

Click a state to drill down.

By grid region

ISO/RTO markets and the non-ISO West and Southeast.

ISO-NE (New England)2 · 347 MW

Requests by year joined

Capacity of requests in this view, by the year they entered the queue. Click a year.

20212022

Source: Rand, J. et al., Queued Up, Lawrence Berkeley National Laboratory, data through end of 2025. Compiled from the queues of the 7 ISO/RTOs and dozens of non-ISO utilities. A request is a proposal to connect, not a commitment to build: historically most are withdrawn. Capacity is the requested interconnection size; hybrids include the storage component. Transmission lines · Planned power plants (EIA)