Nuclear interconnection queue in the USA

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 This shows every request: active, built and withdrawn.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 shown4710.4 GW

Active in queue10.4 GW47 requests

Agreement signed1,015 MW6 requests

Withdrawn6855.8 GW never built

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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

47 requests

Project	Capacity	Status	Location	Region	Queued	Online
Nuclear project 107, Miami-Dade County Nuclear · FPL	1,300 MW	In study	Miami-Dade, FL	Southeast	Aug 2007	target 2027
Nuclear project 108, Miami-Dade County Nuclear · FPL	1,300 MW	In study	Miami-Dade, FL	Southeast	Aug 2007	target 2028
Nuclear project G0998, Benton County Nuclear	1,120 MW	In study	Benton, WA	West	Nov 2023	target 2030
Nuclear project AH1-695, Dauphin County Nuclear · Constellation Energy Generation, LLC	859 MW	In study	Dauphin, PA	PJM	Apr 2025
Nuclear project J4040, Van Buren County Nuclear	735 MW	In study	Van Buren, MI	MISO	Jul 2025	target 2030
Nuclear project J3932, Linn County Nuclear	646 MW	In study	Linn, IA	MISO	Mar 2025	target 2029
Nuclear project S0039, Lincoln County Nuclear	500 MW	In study	Lincoln, WY	West	Nov 2025	target 2031
Nuclear project T2-013, Box Elder County Nuclear · PacifiCorp	500 MW	In study	Box Elder, UT	West	Aug 2025	target 2030
Nuclear project C2-32, Lincoln County Nuclear · US SFR Owner, LLC	500 MW	Agreement signed	Lincoln, WY	West	Apr 2022	target 2031
Nuclear project G0919, Benton County Nuclear	270 MW	In study	Benton, WA	West	Aug 2023	target 2031
Nuclear project AH1-710, Salem County Nuclear · PSEG Nuclear LLC	257 MW	In study	Salem, NJ	PJM	Apr 2025
Replacing 244 MW of Solar with Nuclear; Duane Arnold Nuclear	251 MW	In study	Linn, IA	MISO	Aug 2025	target 2029
Replacing 200 MW of Solar with Nuclear; J1444 Nuclear	200 MW	In study	Linn, IA	MISO	Aug 2025	target 2029
Nuclear project AH1-714, Lasalle County Nuclear · Constellation Energy Generation, LLC	174 MW	In study	Lasalle, IL	PJM	Apr 2025
Nuclear project 255, Limestone County Nuclear	155 MW	Agreement signed	Limestone, AL	Southeast	Aug 2014	target 2018
Nuclear project 256, Limestone County Nuclear	155 MW	Agreement signed	Limestone, AL	Southeast	Aug 2014	target 2019
Nuclear project 254, Limestone County Nuclear	155 MW	Agreement signed	Limestone, AL	Southeast	Aug 2014	target 2018
Nuclear project J3815, St. Charles Parish County Nuclear	153 MW	In study	St. Charles Parish, LA	MISO	Jun 2024	target 2026
Nuclear project AH1-698, Will County Nuclear · Constellation Energy Generation, LLC	130 MW	In study	Will, IL	PJM	Apr 2025
Replacing 100 MW of Solar with Nuclear; Duane Arnold Nuclear	100 MW	In study	Linn, IA	MISO	Aug 2025	target 2029
Nuclear project AH1-702, Ogle County Nuclear · Constellation Energy Generation, LLC	88.0 MW	In study	Ogle, IL	PJM	Apr 2025
Nuclear project 25-IC-1302, Appling County Nuclear	65.0 MW	In study	Appling, GA	Southeast	Mar 2025	target 2031
Replacing 50 MW of Solar with Nuclear; Duane Arnold Nuclear	64.0 MW	In study	Linn, IA	MISO	Aug 2025	target 2029
Nuclear project 25-IC-1301, Appling County Nuclear	60.0 MW	In study	Appling, GA	Southeast	Mar 2025	target 2030
Nuclear project 25RSC-002, Roane County Nuclear	50.0 MW	In study	Roane, TN	Southeast	Jul 2025	target 2029
Nuclear project 25-IC-1300, Burke County Nuclear	50.0 MW	In study	Burke, GA	Southeast	Mar 2025	target 2031
Nuclear project 25-IC-1307, Houston County Nuclear	50.0 MW	In study	Houston, AL	Southeast	Apr 2025	target 2031
Nuclear project 25-IC-1298, Burke County Nuclear	50.0 MW	In study	Burke, GA	Southeast	Mar 2025	target 2030
Nuclear project 25-IC-1309, Houston County Nuclear	50.0 MW	In study	Houston, AL	Southeast	Apr 2025	target 2031
Nuclear project 788, Bingham County Nuclear	45.0 MW	In study	Bingham, ID	West	Apr 2025	target 2028
Peach Bottom Units #2 & #3 Nuclear	44.0 MW	Agreement signed	York, PA	PJM	Apr 2016	2019
Nuclear project 957233, York County Nuclear	40.0 MW	In study	York, SC	Southeast	Jun 2024
Nuclear project 957247, Mecklenburg County Nuclear	40.0 MW	In study	Mecklenburg, NC	Southeast	Jun 2024
Nuclear project 957243, Mecklenburg County Nuclear	33.0 MW	In study	Mecklenburg, NC	Southeast	Jun 2024
Nuclear project 627, Hamilton County Nuclear	25.0 MW	In study	Hamilton, TN	Southeast	Jun 2024	target 2028
Nuclear project 637, Hamilton County Nuclear	24.0 MW	In study	Hamilton, TN	Southeast	Aug 2024	target 2027
Nuclear project J4010, Dewitt County Nuclear	21.0 MW	In study	Dewitt, IL	MISO	Apr 2025	target 2027
Nuclear project 25-IC-1303, Burke County Nuclear	20.0 MW	In study	Burke, GA	Southeast	Mar 2025	target 2027
Nuclear project 25-IC-1304, Burke County Nuclear	16.0 MW	In study	Burke, GA	Southeast	Mar 2025	target 2027
Nuclear project 25-IC-1297, Burke County Nuclear	15.0 MW	In study	Burke, GA	Southeast	Mar 2025	target 2029
Nuclear project 25-IC-1299, Burke County Nuclear	15.0 MW	In study	Burke, GA	Southeast	Mar 2025	target 2028
Nuclear project 25-IC-1308, Houston County Nuclear	15.0 MW	In study	Houston, AL	Southeast	Apr 2025	target 2029
Nuclear project 25-IC-1306, Houston County Nuclear	15.0 MW	In study	Houston, AL	Southeast	Apr 2025	target 2030
Nuclear project 957251, Brunswick County Nuclear · Duke Energy Progress LLC	13.0 MW	In study	Brunswick, NC	Southeast	Jun 2024
Nuclear project 957249, Brunswick County Nuclear · Duke Energy Progress LLC	13.0 MW	In study	Brunswick, NC	Southeast	Jun 2024
Nuclear project 625, Limestone County Nuclear	6.0 MW	In study	Limestone, AL	Southeast	Jun 2024	target 2028
Nuclear project 471, Hamilton County Nuclear	6.0 MW	Agreement signed	Hamilton, TN	Southeast	Mar 2021	target 2026

Capacity in the queue by state

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By grid region

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

Requests by year joined

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

20142025

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)