Interconnection Queues

Interconnection Queues#

Most ISOs support retrieving interconnection queues with the get_interconnection_queue method.

Each ISO reports slightly different fields for their queues, so a best effort was made to standardize column names. When a column couldn’t be standardized, it is appended to the end of the returned dataframe.

Below you can see a preview of each ISO’s interconnection queue

NYISO#

import gridstatus
nyiso = gridstatus.NYISO()
nyiso.get_interconnection_queue()
2026-04-21 02:23:05 - INFO - Downloading interconnection queue from https://www.nyiso.com/documents/20142/1407078/NYISO-Interconnection-Queue.xlsx
/home/docs/checkouts/readthedocs.org/user_builds/isodata/checkouts/v0.36.0/gridstatus/nyiso.py:733: FutureWarning: The behavior of DataFrame concatenation with empty or all-NA entries is deprecated. In a future version, this will no longer exclude empty or all-NA columns when determining the result dtypes. To retain the old behavior, exclude the relevant entries before the concat operation.
  active = pd.concat([active, cluster_active])
/home/docs/checkouts/readthedocs.org/user_builds/isodata/checkouts/v0.36.0/gridstatus/nyiso.py:855: UserWarning: Could not infer format, so each element will be parsed individually, falling back to `dateutil`. To ensure parsing is consistent and as-expected, please specify a format.
  queue["Proposed COD"] = pd.to_datetime(
/home/docs/checkouts/readthedocs.org/user_builds/isodata/checkouts/v0.36.0/gridstatus/nyiso.py:859: UserWarning: Could not infer format, so each element will be parsed individually, falling back to `dateutil`. To ensure parsing is consistent and as-expected, please specify a format.
  queue["Proposed In-Service Date"] = pd.to_datetime(
Queue ID Project Name Interconnecting Entity County State Interconnection Location Transmission Owner Generation Type Capacity (MW) Summer Capacity (MW) ... Withdrawn Date Withdrawal Comment Actual Completion Date Proposed In-Service Date Proposed Initial-Sync Date Last Updated Date Z S Availability of Studies SGIA Tender Date
0 0276 Homer Solar Energy Center NaN Cortland NY Cortland - Fenner 115kV NM-NG Solar 90.0 90.0 ... NaN NaN NaN NaT NaT 2026-01-31 00:00:00 C 11.0 FES, SRIS, FS NaN
1 0495 Mohawk Solar NaN Montgomery NY St. Johnsville - Marshville 115kV NM-NG Solar 90.5 90.5 ... NaN NaN NaN NaT NaT 2025-09-30 00:00:00 F 11.0 FES, SRIS, FS NaN
2 0519 Canisteo Wind NaN Steuben NY Bennett 115kV NYSEG Wind 290.7 290.7 ... NaN NaN NaN NaT NaT 2025-03-31 00:00:00 C 11.0 FES, SRIS, FS NaN
3 0522 NYC Energy NaN Kings NY Hudson Avenue East 138kV ConEd Energy Storage 79.9 79.9 ... NaN NaN NaN NaT NaT 2025-01-31 00:00:00 J 10.0 FES, SRIS, FS NaN
4 0535 Riverhead Solar 2 NaN Suffolk NY Edwards 138kV LIPA Solar 36.0 36.0 ... NaN NaN NaN NaT NaT 2024-09-30 00:00:00 K 11.0 FES, SRIS, FS NaN
... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
2139 0769 North County Energy Storage NY Power Authority Franklin NY Willis 115kV NYPA Energy Storage 20.0 20.0 ... NaN NaN 2023-09-30 00:00:00 NaT NaT 2023-09-30 00:00:00 D 14.0 SIS None
2140 0775 Puckett Solar Puckett Solar, LLC Chenango NY Chenango Forks 34.5kV NYSEG Solar 20.0 20.0 ... NaN NaN 2022-09-30 00:00:00 NaT NaT 2022-09-30 00:00:00 C 14.0 SIS, FS None
2141 0781 Marcy South SSR Detection NY Power Authority Delaware NY Fraser - Annex 345 kV Substation NYPA AC Transmission 0.0 NaN ... NaN NaN 2019-09-30 00:00:00 NaT NaT 2019-09-30 00:00:00 E 14.0 SIS, FS None
2142 0849 Somerset Load Somerset Operating Company, LLC Niagara NY Kintigh 345kV NYSEG Load 250.0 250.0 ... NaN NaN 2022-07-31 00:00:00 NaT NaT 2022-07-31 00:00:00 A 14.0 SIS, FS None
2143 1125 Northern New York Priority Transmission Projec... New York Power Authority and National Grid St. Lawrence-Lewis NY 1. Moses 230 kV substation 2. Haverstock 345 k... NYPA, NM-NG AC Transmission 0.0 NaN ... NaN NaN 2025-06-30 00:00:00 NaT NaT 2025-06-30 00:00:00 D, E 15.0 FS None

2144 rows × 24 columns

CAISO#

caiso = gridstatus.CAISO()
caiso.get_interconnection_queue()
2026-04-21 02:23:06 - INFO - Downloading interconnection queue from http://www.caiso.com/PublishedDocuments/PublicQueueReport.xlsx
Queue ID Project Name Interconnecting Entity County State Interconnection Location Transmission Owner Generation Type Capacity (MW) Summer Capacity (MW) ... Interconnection Request Receive Date Interconnection Agreement Status Study Process Proposed On-line Date (as filed with IR) System Impact Study or Phase I Cluster Study Facilities Study (FAS) or Phase II Cluster Study Optional Study (OS) Full Capacity, Partial or Energy Only (FC/P/EO) Off-Peak Deliverability and Economic Only Feasibility Study or Supplemental Review
0 22 MONTEZUMA (HIGH WINDS III) None SOLANO CA Birds Landing 230 kV PGAE Wind Turbine + Storage 38.00 None ... 2003-11-18 00:00:00 Executed AMEND 39 2005-06-30 07:00:00 Complete Complete NaN Partial Capacity Off-Peak Deliverability NaN
1 32 TULE WIND None SAN DIEGO CA Boulevard East Substation 138 kV SDGE Wind Turbine + Storage 193.80 None ... 2004-05-12 00:00:00 Executed Serial LGIP 2007-09-01 07:00:00 Complete Complete NaN Partial Capacity Off-Peak Deliverability Waived
2 54 MIDWAY PEAKING None FRESNO CA Panoche Substation PGAE Gas Turbine + Storage 119.90 None ... 2005-01-12 00:00:00 Executed Serial LGIP 2008-06-01 07:00:00 Complete Re-Study NaN Full Capacity Off-Peak Deliverability Waived
3 61 FRESNO COGENERATION EXPANSION PROJECT None FRESNO CA Helm-Kerman 70 kV Line PGAE Steam Turbine + Storage 73.27 None ... 2005-03-28 00:00:00 Executed AMEND 39 2006-05-31 07:00:00 Complete Complete NaN Full Capacity Off-Peak Deliverability NaN
4 72 LAKE ELSINORE ADVANCED PUMPED STORAGE PROJECT None RIVERSIDE CA Proposed Lee Lake Substation 500 kV SDGE Storage 500.00 None ... 2005-04-26 00:00:00 Executed Serial LGIP 2008-12-31 08:00:00 Complete Re-Study NaN Full Capacity NaN Waived
... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
2273 2194 PRONGHORN ENERGY STORAGE None LOS ANGELES CA Antelope SCE Storage 120.00 None ... 2022-05-07 00:00:00 NaN ISP 2026-06-01 07:00:00 NaN NaN NaN Full Capacity Off-Peak Deliverability NaN
2274 2196 MALAGA BESS None FRESNO CA Malaga 115 kV PGAE Storage 44.00 None ... 2022-09-10 00:00:00 NaN ISP 2024-11-06 08:00:00 NaN NaN NaN Full Capacity Off-Peak Deliverability NaN
2275 2197 VENTANA RELIABILITY PROJECT None SAN BERNARDINO CA Lugo SCE Storage 250.00 None ... 2022-09-29 00:00:00 NaN ISP 2024-06-01 07:00:00 NaN NaN NaN Full Capacity Off-Peak Deliverability NaN
2276 2198 VISTA RELIABILITY None LOS ANGELES CA Vincent SCE Storage 250.00 None ... 2022-10-14 00:00:00 NaN ISP 2024-06-01 07:00:00 NaN NaN NaN Full Capacity Off-Peak Deliverability NaN
2277 2199 TUNGSTEN BESS None SAN BERNARDINO CA Victor Substation 230 kV SCE Storage 120.00 None ... 2023-01-31 00:00:00 NaN ISP 2026-05-01 07:00:00 NaN NaN NaN Full Capacity Off-Peak Deliverability NaN

2278 rows × 36 columns

SPP#

spp = gridstatus.SPP()
spp.get_interconnection_queue()
2026-04-21 02:23:07 - INFO - Getting interconnection queue from https://opsportal.spp.org/Studies/GenerateSummaryCSV
Queue ID Project Name Interconnecting Entity County State Interconnection Location Transmission Owner Generation Type Capacity (MW) Summer Capacity (MW) ... Withdrawn Date Withdrawal Comment Actual Completion Date In-Service Date Commercial Operation Date Cessation Date Current Cluster Cluster Group Service Type Status (Original)
0 TI-18-0827 None None Weld County CO Redtail 115 Substation TSGT Wind - Wind 145.0 145.0 ... NaN None None 6/24/2022 NaN NaN RTOE Transitional Cluster NaN ER/NR IA FULLY EXECUTED/ON SCHEDULE
1 TI-17-0224 None None Kit Carson/Cheyenne Counties CO Windtalker 230 Switching Station TSGT Wind - Wind 104.0 104.0 ... NaN None None 9/2/2020 NaN NaN RTOE Transitional Cluster NaN ER/NR IA FULLY EXECUTED/ON SCHEDULE
2 TI-12-0217 None None Ouray County CO Cow Creek 115 Switching Station TSGT Solar - Photovoltaic 7.2 7.2 ... NaN None None 11/1/2013 NaN NaN RTOE Transitional Cluster NaN ER/NR IA FULLY EXECUTED/ON SCHEDULE
3 TI-08-0502 None None Kit Carson County CO Landsman Creek 230 Switching\nStation TSGT Wind - Wind 51.0 51.0 ... NaN None None 10/15/2010 NaN NaN RTOE Transitional Cluster NaN ER/NR IA FULLY EXECUTED/ON SCHEDULE
4 TI-08-0204 None None Kit Carson County CO Burlington 230 Bus TSGT Wind - Wind 150.0 150.0 ... NaN None None 11/30/2015 NaN NaN RTOE Transitional Cluster NaN ER/NR IA FULLY EXECUTED/ON SCHEDULE
... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
2940 2019-G3 None None Weld County CO Ault 345- WAPA Solar - Photovoltaic 150.0 150.0 ... NaN None None 12/1/2021 NaN NaN RTOE Transitional Cluster NaN ER/NR IA FULLY EXECUTED/ON SCHEDULE
2941 2019-G2 None None Jackson County CO Craig - Ault 345- WAPA Wind - Wind 252.0 252.0 ... NaN None None 12/31/2028 NaN NaN RTOE Transitional Cluster NaN ER/NR IA FULLY EXECUTED/ON SCHEDULE
2942 2019-G1 None None Jackson County CO Craig - Ault 345- WAPA Wind - Wind 252.0 252.0 ... NaN None None 12/31/2028 NaN NaN RTOE Transitional Cluster NaN ER/NR IA FULLY EXECUTED/ON SCHEDULE
2943 2018-G6 None None San Juan County NM Shiprock 345- Sub WAPA Hybrid - Solar/Storage 360.0 360.0 ... NaN None None 12/31/2022 NaN NaN RTOE Transitional Cluster NaN ER/NR IA PENDING
2944 2017-G2 None None Banner County NE Roundtop - Stegall 115- WAPA Wind - Wind 130.0 130.0 ... NaN None None 9/15/2020 NaN NaN RTOE Transitional Cluster NaN ER/NR IA PENDING

2945 rows × 24 columns

Ercot#

ercot = gridstatus.Ercot()
ercot.get_interconnection_queue()
2026-04-21 02:23:08 - INFO - Fetching document https://www.ercot.com/misapp/servlets/IceDocListJsonWS?reportTypeId=15933&_1776738188
2026-04-21 02:23:08 - INFO - Requesting https://www.ercot.com/misapp/servlets/IceDocListJsonWS?reportTypeId=15933&_1776738188 with {}
2026-04-21 02:23:08 - INFO - Downloading interconnection queue from: https://www.ercot.com/misdownload/servlets/mirDownload?doclookupId=1210876874 
Queue ID Project Name Interconnecting Entity County State Interconnection Location Transmission Owner Generation Type Capacity (MW) Summer Capacity (MW) ... IA Signed Air Permit GHG Permit Water Availability Meets Planning Meets All Planning CDR Reporting Zone Approved for Energization Approved for Synchronization Comment
0 15INR0064b Harald (BearKat Wind B) McCrae Wind Energy II, LLC Glasscock Texas 59903 Bearkat 345kV None Wind - Wind Turbine 162.10 None ... 2018-05-30 Not Required Not Required Not Required 2018-05-30 00:00:00 2018-09-19 00:00:00 WEST 2020-02-10 2020-05-12 NaN
1 16INR0049 Nazareth Solar TX Nazareth Solar, LLC Castro Texas tap 345kV 23914 Tule Canyon - 23912 Ogallala C2 None Solar - Photovoltaic Solar 203.00 None ... 2026-03-05 Not Required Not Required Not Required 2024-03-22 00:00:00 NaN PANHANDLE NaT NaT NaN
2 16INR0081 Mesteno Wind Mesteno Windpower, LLC Starr Texas 80355 Del Sol 345kV None Wind - Wind Turbine 201.60 None ... 2018-04-25 Not Required Not Required Not Required 2018-04-25 00:00:00 2019-03-28 00:00:00 SOUTH 2019-11-26 2019-12-12 NaN
3 16INR0085 Priddy Wind ENGIE North America Mills Texas tap 345kV 1444 Brown – 3422 Killeen None Wind - Wind Turbine 302.40 None ... 2020-08-13 Not Required Not Required Not Required 2021-03-29 00:00:00 2021-04-30 00:00:00 NORTH 2021-10-13 2021-11-19 NaN
4 16INR0104 Big Sampson Wind Big Sampson Wind Project, LLC Crockett Texas tap 345kV 76015 Cedar Canyon - 7053 Noelke None Wind - Wind Turbine 265.40 None ... 2019-11-08 Not Required Not Required Not Required 2024-10-31 00:00:00 2024-11-04 00:00:00 WEST 2025-06-04 2025-06-16 NaN
... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
1841 31INR0013 SCHNEIDER GAS RICE PHASE 2 LCRA Caldwell Texas Double Tap 345kV #7042 Zorn - #7040 Austrop an... None Gas - Internal Combustion Engine, eg. Reciproc... 113.02 None ... 2025-12-19 NaN NaN NaN NaN NaN SOUTH NaT NaT NaN
1842 31INR0018 Permian I Solar S&S Renewables, LLC Pecos Texas Tap TNMP White Baker (38435)–Bottlebrush(38441... None Solar - Photovoltaic Solar 1125.73 None ... NaT NaN NaN Not Required NaN NaN WEST NaT NaT NaN
1843 31INR0019 Permian I Natural Gas S&S Renewables, LLC Pecos Texas Tap TNMP White Baker (38435)–Bottlebrush(38441... None Gas - Internal Combustion Engine, eg. Reciproc... 1246.95 None ... NaT NaN NaN NaN NaN NaN WEST NaT NaT NaN
1844 32INR0002 Radiant Plains Energy Center Solar Adapture Solar Development Colorado Texas 7254 Weimar 138 kV None Solar - Photovoltaic Solar 100.00 None ... NaT NaN NaN Not Required NaN NaN SOUTH NaT NaT NaN
1845 32INR0003 Mule Deer Run Gas BOULEVARD ASSOCIATES, LLC Anderson Texas #3308 Pin Oak 345KV None Gas - Combined-Cycle 1263.00 None ... NaT NaN NaN NaN NaN NaN NORTH NaT NaT NaN

1846 rows × 35 columns

MISO#

miso = gridstatus.MISO()
miso.get_interconnection_queue()
2026-04-21 02:23:10 - INFO - Downloading interconnection queue from https://www.misoenergy.org/api/giqueue/getprojects
Queue ID Project Name Interconnecting Entity County State Interconnection Location Transmission Owner Generation Type Capacity (MW) Summer Capacity (MW) ... giaToExec studyCycle studyGroup studyPhase svcType dp1ErisMw dp1NrisMw dp2ErisMw dp2NrisMw sisPhase1
0 J4175 None None ENTERGY LOUISIANA, LLC 770.00 770.00 ... NaN DPP-2026 South NRIS 0.0 0.0 0.0 0.0
1 J4181 None None 0.00 0.00 ... NaN ERAS Study Cycle 3 Central NRIS 0.0 0.0 0.0 0.0
2 J4146 None None 0.00 0.00 ... NaN 0MW GIA NA NRIS 0.0 0.0 0.0 0.0
3 J3833 None None Cass ND Buffalo 115 kV OTTER TAIL POWER COMPANY Wind 200.00 200.00 ... NaN DPP-2025 West Phase 1 NRIS 200.0 200.0 0.0 0.0
4 J3487 None None Vermillion IN CAYUGA 345 DUKE ENERGY INDIANA, LLC Solar 400.00 400.00 ... NaN DPP-2023 Central Study Not Started NRIS 0.0 0.0 0.0 0.0
... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
3760 R1053 None None Milwaukee WI Elm Road AMERICAN TRANSMISSION COMPANY Gas 1138.00 1138.00 ... NaN 0.0 0.0 0.0 0.0
3761 S1046 None None Codington Big Stone South 230kV OTTER TAIL POWER COMPANY 120.00 120.00 ... NaN SIS 0.0 0.0 0.0 0.0
3762 S1045 None None Emmons Napoleon SW 230 kV (661091) MONTANA-DAKOTA UTILITIES CO. 0.00 0.00 ... NaN SIS 0.0 0.0 0.0 0.0
3763 S1054 None None Cottonwood Lakefield Junction 345kV NORTHERN STATES POWER COMPANY 550.00 550.00 ... NaN SIS 0.0 0.0 0.0 0.0
3764 R5062 None None Jasper IN SCHAHFER GEN STA NORTHERN INDIANA PUBLIC SERVICE COMPANY LLC Hybrid 732.73 732.73 ... NaN 0.0 0.0 0.0 0.0

3765 rows × 31 columns

ISONE#

isone = gridstatus.ISONE()
isone.get_interconnection_queue()
Queue ID Project Name Interconnecting Entity County State Interconnection Location Transmission Owner Generation Type Capacity (MW) Summer Capacity (MW) ... I39 Dev Zone System Impact Study Completed Feasiblity Study Status System Impact Study Status Optional Interconnection Study Status Facilities Study Status Interconnection Agreement Status Project Status
0 1601 BESS None Essex MA NGRID KING ST T3 NaN BAT 4.99 4.99 ... N NaN BOST N NaN NaN NaN NaN NaN NaN
1 1600 Chazy Lake BESS (NYISO-C24-308) None Clinton NY NYISO Patnode 230 kV NaN BAT 50.00 50.00 ... N NaN NaN N NaN NaN NaN NaN NaN NaN
2 1599 Dover NY BESS (NYISO-C24-316) None Dutchess NY NYISO Pleasant Valley-Cricket Valley 345 kV NaN BAT 1000.00 1000.00 ... N NaN NaN N NaN NaN NaN NaN NaN NaN
3 1598 Zenobe Rotterdam LLC (NYISO-C24-191) None Schenectady NY NYISO Rotterdam 115 kV NaN BAT 100.00 100.00 ... N NaN NaN N NaN NaN NaN NaN NaN NaN
4 1597 New Scotland BESS (NYISO-C24-045) None Albany NY NYISO New Scotland 345 kV NaN BAT 1350.00 1350.00 ... N NaN NaN N NaN NaN NaN NaN NaN NaN
... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ... ...
1746 5 Brayton Pt None Bristol MA Brayton Point 345 kV Station NGRID NaN NaN NaN ... Y NaN RI Y NaN NaN NaN NaN NaN NaN
1747 4 EMI Dighton Power Project None Bristol MA U6 Line NGRID NG NaN NaN ... Y NaN SEMA Y NaN NaN NaN NaN NaN NaN
1748 3 Androscoggin Energy Center None Franklin ME Jay 115 kV Substation CMP DFO NG NaN NaN ... Y NaN ME Y NaN NaN NaN NaN NaN NaN
1749 2 EMI-Tiverton None Newport RI Near Tiverton 115 kV Substation NGRID NG NaN NaN ... Y NaN SEMA Y NaN NaN NaN NaN NaN NaN
1750 1 Millennium+K117 None Worcester MA W 123 Line NGRID DFO NG NaN NaN ... Y NaN WMA Y NaN NaN NaN NaN NaN NaN

1751 rows × 32 columns

PJM#

pjm = gridstatus.PJM()
pjm.get_interconnection_queue()
---------------------------------------------------------------------------
ValueError                                Traceback (most recent call last)
Cell In[7], line 1
----> 1 pjm = gridstatus.PJM()
      2 pjm.get_interconnection_queue()

File ~/checkouts/readthedocs.org/user_builds/isodata/checkouts/v0.36.0/gridstatus/pjm.py:93, in PJM.__init__(self, api_key, retries)
     90 self.api_key = api_key or os.getenv("PJM_API_KEY")
     92 if not self.api_key:
---> 93     raise ValueError("api_key must be provided or set in PJM_API_KEY env var")

ValueError: api_key must be provided or set in PJM_API_KEY env var