Interconnection queue in the USA — page 35

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 This shows every request: active, built and withdrawn.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 shown9,1872,001.0 GW

Active in queue2,001.0 GW9,187 requests

Agreement signed423.2 GW2,141 requests

Withdrawn24,2054,519.8 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

9,187 requests · page 35 of 184

Project	Capacity	Status	Location	Region	Queued	Online
Other project Q348, Coconino County Other	300 MW	In study	Coconino, AZ	West	Sep 2020	target 2024
Onshore wind project J1781, Iowa County Onshore wind	300 MW	Under construction	Iowa, WI	MISO	Jun 2020	target 2027
Solar project J1730, Dunn County Solar	300 MW	Under construction	Dunn, WI	MISO	Mar 2022	target 2027
Solar project GEN-2018-048, Caddo County Solar	300 MW	Agreement signed	Caddo, OK	SPP	May 2018	target 2028
Gas project GEN-2024-254, Canadian County Gas	300 MW	In study	Canadian, OK	SPP	Mar 2025	target 2027
Solar project GI-CS-2025-05, Weld County Solar	300 MW	In study	Weld, CO	West	Sep 2025	target 2029
Solar project J3884, Benton County Solar	300 MW	In study	Benton, MN	MISO	Feb 2025	target 2030
Battery storage project T2-075, San Juan County Battery storage	300 MW	In study	San Juan, UT	West	Sep 2025	target 2027
Solar project GEN-2024-099, Castro County Solar	300 MW	In study	Castro, TX	SPP	Mar 2025	target 2031
Battery storage project J3946, Tazewell County Battery storage	300 MW	In study	Tazewell, IL	MISO	Mar 2025	target 2030
Solar + storage project 145, Cochise County Solar + storage	300 MW	In study	Cochise, AZ	West	Dec 2022	target 2025
Desert Sands Battery storage	300 MW	Agreement signed	Riverside, CA	CAISO	Apr 2020	target 2035
Onshore wind project J3699, Henry County Onshore wind	300 MW	In study	Henry, IL	MISO	Apr 2024	target 2028
Battery storage project GEN-2022-139, Harrison County Battery storage	300 MW	In study	Harrison, TX	SPP	Feb 2023	target 2030
Onshore wind project 2024-G5, Mohave County Onshore wind	300 MW	In study	Mohave, AZ	West	Aug 2024	target 2029
Other project 62, Pima County Other	300 MW	In study	Pima, AZ	West	Sep 2018	target 2023
Onshore wind project J3901, Shelby County Onshore wind	300 MW	In study	Shelby, IL	MISO	Jan 2025	target 2030
Solar + storage project Q465, Maricopa County Solar + storage	300 MW	In study	Maricopa, AZ	West	Mar 2022	target 2025
Solar + storage project GEN-2024-113, Sequoyah County Solar + storage	300 MW	In study	Sequoyah, OK	SPP	Mar 2025	target 2028
Solar project J2482, Crittenden County Solar	300 MW	In study	Crittenden, AR	MISO	Sep 2022	target 2026
Battery storage project J3518, Gasconade County Battery storage	300 MW	In study	Gasconade, MO	MISO	Apr 2024	target 2028
Other project CLPT G17, Laramie County Other · NextEra Energy Resources Interconnection Holdings, LLC	300 MW	Agreement signed	Laramie, WY	West	Apr 2022	target 2025
Onshore wind project J1360, Piatt County Onshore wind	300 MW	Agreement signed	Piatt, IL	MISO	Apr 2019	target 2024
Solar project GEN-2024-038, Nemaha County Solar	300 MW	In study	Nemaha, NE	SPP	Oct 2024	target 2029
Solar project AI1-203, Lunenburg County Solar	300 MW	In study	Lunenburg, VA	PJM	Sep 2022	target 2027
Battery storage project AI1-024, Mclean County Battery storage	300 MW	In study	Mclean, IL	PJM	Apr 2022	target 2026
Onshore wind project GI-2016-4, Lincoln County Onshore wind	300 MW	Agreement signed	Lincoln, CO	West	Feb 2016	target 2018
Onshore wind project Q497, Navajo County Onshore wind	300 MW	In study	Navajo, AZ	West	Mar 2023	target 2027
Solar project J1710, Lee County Solar	300 MW	In study	Lee, AR	MISO	Jun 2020	target 2026
Solar + storage project 311, Yellowstone County Solar + storage	300 MW	In study	Yellowstone, MT	West	Feb 2017	target 2021
Solar + storage project Company 189, Clark County Solar + storage	300 MW	Paused / redesign	Clark, NV	West	Feb 2020	target 2025
Solar project J2252, Jackson County Solar	300 MW	In study	Jackson, AR	MISO	Jul 2022	target 2027
Mammoth South Energy Center Solar	300 MW	Agreement signed	Pulaski, IN	PJM	Mar 2020	target 2027
Battery storage project J4095, Huron County Battery storage	300 MW	In study	Huron, MI	MISO	Oct 2025	target 2030
Onshore wind project J3681, Mclean County Onshore wind	300 MW	In study	Mclean, IL	MISO	Apr 2024	target 2028
Solar + storage project 2023-G11, Cochise County Solar + storage	300 MW	In study	Cochise, AZ	West	Aug 2023	target 2028
Cassius Blue Solar Solar + storage	300 MW	Agreement signed	Sussex, VA	PJM	Feb 2019	target 2031
Solar project J4074, Crittenden County Solar	300 MW	In study	Crittenden, AR	MISO	Sep 2025	target 2029
Battery storage project IC-1091, Mobile County Battery storage	300 MW	Paused / redesign	Mobile, AL	Southeast	Nov 2022	target 2027
Onshore wind project GEN-2024-240, Nowata County Onshore wind	300 MW	In study	Nowata, OK	SPP	Mar 2025	target 2029
Solar + storage project J2205, Callaway County Solar + storage	300 MW	In study	Callaway, MO	MISO	Aug 2021	target 2024
Battery storage project AH1-260, Camden County Battery storage · Haddy Energy Storage LLC	300 MW	In study	Camden, NJ	PJM	Jan 2025	target 2025
Mammoth Central Energy Center Solar	300 MW	Agreement signed	Pulaski, IN	PJM	Mar 2020	target 2027
Onshore wind project G0872, Garfield County Onshore wind	300 MW	In study	Garfield, WA	West	Jun 2023	target 2028
Solar + storage project C1-51, Juab County Solar + storage · Thirsty Valley Solar Energy LLC	300 MW	Paused / redesign	Juab, UT	West	May 2021	target 2024
Other project G0693, Crook County Other	300 MW	In study	Crook, OR	West	Sep 2021	target 2025
Solar project J1712, Perry County Solar	300 MW	In study	Perry, IL	MISO	Jun 2020	target 2025
Onshore wind project GEN-2021-057, Antelope County Onshore wind	300 MW	In study	Antelope, NE	SPP	Apr 2021	target 2027
Solar + storage project AI2-443, Greene County Solar + storage	300 MW	In study	Greene, PA	PJM	Mar 2023	target 2027
Battery storage project J2377, Peoria County Battery storage	300 MW	In study	Peoria, IL	MISO	Nov 2024	target 2028

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.

Requests by year joined

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

20102025

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)