Completed queue projects in Massachusetts

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 This shows every request: active, built and withdrawn.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 shown604,417 MW

Active in queue11.2 GW35 requests

Agreement signed6,013 MW17 requests

Withdrawn37048.3 GW never built

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

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

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In studyAgreement signedUnder constructionBuiltSuspendedWithdrawn

Requests

60 requests · page 1 of 2

Project	Capacity	Status	Location	Region	Queued	Online
Northfield Mt. Equipment Replacement Battery storage	1,180 MW	Operating	Franklin, MA	ISO-NE	Jun 2007	target 2008
Footprint Combined Cycle Unit Gas	716 MW	Operating	Essex, MA	ISO-NE	Jan 2012	target 2013
Canal 3 Gas	333 MW	Operating	Barnstable, MA	ISO-NE	Mar 2014	target 2019
Bear Swamp Pump Load increase Battery storage	333 MW	Operating	Berkshire, MA	ISO-NE	May 2022	target 2023
Bear Swamp Pumping Load Increase Battery storage	333 MW	Operating	Berkshire, MA	ISO-NE	Nov 2021	target 2021
Kendall Revised Reconfiguration Project Gas	250 MW	Operating	Middlesex, MA	ISO-NE	Oct 2015	target 2016
Medway Peaker - SEMARI Gas	208 MW	Operating	Norfolk, MA	ISO-NE	May 2014	target 2019
Altresco Increase (winter) Gas	193 MW	Operating	Berkshire, MA	ISO-NE	Feb 2011	target 2012
Cranberry Point Energy Storage Battery storage	150 MW	Operating	Plymouth, MA	ISO-NE	Mar 2018	target 2025
Thomas A. Watson Generating Station Gas	108 MW	Operating	Norfolk, MA	ISO-NE	Aug 2006	target 2009
L'Energia Gas	74.0 MW	Operating	Middlesex, MA	ISO-NE	Jul 2007	target 2009
Simple Cycle Gas Turbine Gas	61.9 MW	Operating	Essex, MA	ISO-NE	Jul 2016	target 2024
Cogen DG Gas	43.0 MW	Operating	Middlesex, MA	ISO-NE	Oct 2016	target 2021
MATEP (Medical Area Total Energy Project) Gas	42.0 MW	Operating	Suffolk, MA	ISO-NE	May 2006
Combined Cycle Uprate #2 Gas	30.0 MW	Operating	Worcester, MA	ISO-NE	Feb 2015	target 2018
Brayton Point 3 Uprate( see 243) Coal	30.0 MW	Operating	Bristol, MA	ISO-NE	Oct 2007	target 2011
Hoosac Wind Project Onshore wind	28.5 MW	Operating	Berkshire, MA	ISO-NE	May 2003	target 2012
Northfield Mt Upgrade #1 Battery storage	25.0 MW	Operating	Franklin, MA	ISO-NE	Jan 2007	target 2011
Crystal Lake Substation - NG Western MA Area Cluster Study Solar	24.7 MW	Operating	Worcester, MA	ISO-NE	Dec 2018	target 2020
Dartmouth Power Expansion Gas	24.0 MW	Operating	Bristol, MA	ISO-NE	Jan 2007	target 2009
Wendell Depot Substation - NG Western MA Area Cluster Study Solar	15.0 MW	Operating	Franklin, MA	ISO-NE	Dec 2018	target 2021
Berkshire Wind Power Project Onshore wind	15.0 MW	Operating	Berkshire, MA	ISO-NE	Oct 2000	target 2011
MATEP -3rd CTG Gas	14.1 MW	Operating	Suffolk, MA	ISO-NE	Jan 2013	target 2017
Gas Turbine Increase Gas	10.9 MW	Operating	Essex, MA	ISO-NE	Feb 2013	target 2013
Solar with Battery Solar + storage	10.0 MW	Operating	Worcester, MA	ISO-NE	Sep 2018	target 2021
Harrington Street PV Project (QF) Solar	9.8 MW	Operating	Worcester, MA	ISO-NE	Sep 2011	target 2016
Litchfield substation - NG Western MA Area Cluster Study Solar	9.5 MW	Operating	Worcester, MA	ISO-NE	Mar 2019	target 2021
Solar Solar	9.5 MW	Operating	Plymouth, MA	ISO-NE	Jan 2018	target 2019
N. Oxford Substation - NG Western MA Area Cluster Study Solar	8.7 MW	Operating	Worcester, MA	ISO-NE	Dec 2018	target 2020
Solar Solar	8.0 MW	Operating	Worcester, MA	ISO-NE	Dec 2017	target 2020
Salem Harbor Station Increase Other	8.0 MW	Operating	Essex, MA	ISO-NE	Dec 2010
Belchertown Substation - NG Western MA Area Cluster Study Solar	8.0 MW	Operating	Hampden, MA	ISO-NE	Dec 2018	target 2021
Combined Reciprocating, Solar and Battery Solar + storage	7.8 MW	Operating	Middlesex, MA	ISO-NE	Aug 2018	target 2019
Kendall #3 Back Pressure Steam Turbine Gas	7.5 MW	Operating	Middlesex, MA	ISO-NE	May 2010	target 2010
Fitchburg Renewable Energy Other	7.2 MW	Operating	Worcester, MA	ISO-NE	May 2006	target 2007
Solar Solar	6.0 MW	Operating	Worcester, MA	ISO-NE	Dec 2017	target 2020
Increase to Steam Turbine Capacity Uprate (See QP Coal	6.0 MW	Operating	Bristol, MA	ISO-NE	Jan 2008	target 2011
Kearsarge Solar with battery Solar + storage	5.4 MW	Operating	Norfolk, MA	ISO-NE	Aug 2018	target 2021
Syncarpha Blandford Solar plus battery storage Solar + storage	5.0 MW	Operating	Berkshire, MA	ISO-NE	Sep 2020	target 2021
Mass Power Increase Gas	5.0 MW	Operating	Hampden, MA	ISO-NE	Sep 2010	target 2011
Holiday Hill Community Wind Onshore wind	5.0 MW	Operating	Hampden, MA	ISO-NE	Feb 2015	target 2020
Dighton Power Uprate Gas	5.0 MW	Operating	Bristol, MA	ISO-NE	Sep 2012	target 2013
Solar Solar	4.9 MW	Operating	Plymouth, MA	ISO-NE	Aug 2018	target 2019
Westminster - NG Western MA Area Cluster Study Solar	4.9 MW	Operating	Worcester, MA	ISO-NE	Dec 2018	target 2021
ENA Old Falmouth Road PV + Storage Solar + storage	4.8 MW	Operating	Barnstable, MA	ISO-NE	Apr 2020	target 2024
Wilbraham substation - NG Western MA Area Cluster Study Solar	4.0 MW	Operating	Hampden, MA	ISO-NE	Mar 2019	target 2020
Chestnut Hill 702 Substation - NG Western MA Area Cluster Study Solar	3.3 MW	Operating	Worcester, MA	ISO-NE	Dec 2018	target 2020
Five Corners Substation - NG Western MA Area Cluster Study Solar	3.0 MW	Operating	Hampshire, MA	ISO-NE	Dec 2018	target 2021
Leicester - NG Western MA Area Cluster Study Solar	2.6 MW	Operating	Worcester, MA	ISO-NE	Dec 2018	target 2021
Bear Swamp Upper Yard substation - NG Western MA Area Cluster Study Solar	2.5 MW	Operating	Berkshire, MA	ISO-NE	Mar 2019	target 2021

Capacity in the queue by state

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By grid region

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

ISO-NE (New England)60 · 4,417 MW

Requests by year joined

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

20102022

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)