Tracking U.S. ISO & utility interconnection queues

Tracking 36,475 interconnection queue requests from 1996 to 2024

What is the interconnection queue?
See data table & graphs here.

Queue changes in the last 1 week (see all)

U.S. county map of interconnection requests, 1996-2024

No. requests
For applied filter
Data last updated Jul 19, 2024, 9:26 PM UTC

1996-2024 interconnection capacity over time, all states, by date enqueued

No. requests
For applied filter

1996-2024 interconnection requests & capacity by state

No. requests
For applied filter

Data Table

No. requests
For applied filter


Q: Where is this data from?

A: This dataset has been built using publicly-available data from ISOs/RTOS and non-ISO utilities. We update this data at least once a day.

Q: What is an ISO, RTO, and/or non-ISO utility?

A: An Independent System Operator (ISO) or Regional Transmission Organization (RTO) is a non-profit organization that operates the high-voltage electric power transmission grid in a specific region, ensuring reliability and providing non-discriminatory access. ISOs and RTOs play a critical role in the electric power industry, helping to ensure that the grid is reliable and that electricity is delivered to consumers at a reasonable cost. Learn more about ISOs and RTOs here.A non-ISO utility is an electric utility that does not operate under the umbrella of an ISO or RTO. Non-ISO utilities are typically smaller utilities that operate in rural or remote areas, facing challenges such as meeting the same reliability standards as ISOs and RTOs, but without the same resources and economies of scale.

Q: What is an interconnection queue?

A: What is an interconnection queue? An interconnection queue is a list of power generation and transmission projects that have requested to connect to the electric grid. The queue is managed by the grid operator, which is typically an independent system operator (ISO) or regional transmission organization (RTO).

Q: Why is the interconnection queue important?

A: The interconnection queue is important because it ensures that new power generation and transmission projects can be safely and reliably connected to the grid. The grid operator reviews each project to assess its impact on the grid and to make sure that it will not compromise the reliability of the electric system. To learn more about interconnection queues, see this NPR Planet Money episode"Green Energy Gridlock"and this article/podcast from Volts.

Q: Where can I contact the owners, submit feature requests, get data, or submit an error?

A: Please email us if you have any questions, see an error, want to request data, or have feature requests.

Q: Who are you?
Tracking U.S. ISO & utility interconnection queues

Stay up to date via our email newsletter:

Interconnection requests in list format

All interconnection requests


Charts State of interconnection queues — January 2024All blog posts

Other energy & climate tools

Inflation Reduction Act Bill Text Viewer ToolClimate Tech Jobs Tracker (30,000+ jobs)Climate Tech Hiring Trends & Charts

Interconnection queue requests by state

Interconnection queue requests by generation transmission owner

Alberta Electric System OperatorAllegheny PowerAmeren IllinoisAmeren MissouriAmerican Electric PowerAmerican Municipal PowerAmerican Transmission CompanyAmerican Transmission SystemsArizona Public ServiceArkansas Electric Cooperative CorporationAssociated Electric CooperativeAvista UtilitiesBaltimore Gas and ElectricBangor Hydro ElectricBasin Electric Power CooperativeBig Rivers Electric CorporationBlack Hills Cheyenne Light Fuel and Power TransmissionBlack Hills Colorado ElectricBlack Hills PowerBonneville Power AdministrationCedar Falls Municipal Electric UtilityCentral Hudson Gas and ElectricCentral Maine PowerChelan County Public Utility DistrictCity Utilities of Springfield MissouriCity Water, Light and PowerCity of Columbia, MissouriCity of Muscatine, IowaCleco HoldingsColorado River Storage Project TransmissionColorado Springs UtilitiesCommonwealth EdisonConsolidated EdisonConsumers EnergyCooperative EnergyDCR TransmissionDairyland Power CooperativeDayton Power and LightDelmarva Power and LightDesertLinkDominion EnergyDominion Energy South CarolinaDuke EnergyDuke Energy CarolinasDuke Energy FloridaDuke Energy IndianaDuke Energy Ohio and KentuckyDuke Energy ProgressDuquesne Light CompanyEast Kentucky Power CooperativeEast River Electric Power CooperativeEast Texas Electric CooperativeEl Paso ElectricEmpire District Electric CompanyEntergyEntergy ArkansasEntergy LouisianaEntergy MississippiEntergy New OrleansEntergy TexasEssential PowerEvergyEvergy Missouri WestEversourceFlorida Power and LightGrand River Dam AuthorityGrand River EnergyGridLiance WestGridUnityHenderson Municipal Power and LightHoosier EnergyISO New EnglandITC Great PlainsITC MidwestITC TransmissionIdaho Power CompanyImperial Irrigation DistrictIndependence Power and LightIndianapolis Power and LightJersey Central Power and LightKACYKansas City Board of Public UtilitiesKansas City Power and LightKansas Power PoolLS Power Grid New YorkLafayette Utilities System
Lincoln Electric SystemLong Island Power AuthorityLos Angeles Department of Water and PowerLouisville Gas and Electric and Kentucky Utilities EnergyLoveland Area Projects TransmissionLower Yellowstone Rural Electric CooperativeMaine Public ServiceMetropolitan Edison CompanyMichigan Electric Transmission CompanyMichigan Public Power AgencyMid-Kansas Electric CompanyMidAmerican EnergyMidcontinent Independent System OperatorMidwest EnergyMinnesota PowerMinnkota Power CooperativeMissouri River Energy ServicesMissouri Western Energy CorporationMontana-Dakota UtilitiesMunicipal Commission of BoonvilleNAEANV EnergyNational GridNebraska Public Power DistrictNew York Power AuthorityNew York State Electric and GasNew York TranscoNextEra Energy TransmissionNorthWestern EnergyNortheast UtilitiesNorthern Indiana Public ServiceNorthern States Power CompanyNorthwest Iowa Power CooperativeOhio Valley Electric CorporationOklahoma Gas and ElectricOld Dominion Electric CooperativeOmaha Public Power DistrictOrange and RocklandOrlando Utilities CommissionOtter Tail Power CompanyPECO Energy CompanyPJMPPL CorporationPacifiCorpPacific Gas and Electric CompanyPennsylvania Electric CompanyPortland General ElectricPotomac Electric Power CompanyPrairie PowerPublic Service Company Of ColoradoPublic Service Company of New MexicoPublic Service Electric and GasPuget Sound EnergyRochester Gas and ElectricRockland Electric CompanySacramento Municipal Utility DistrictSalt River ProjectSan Diego Gas and ElectricSantee CooperSouth Mississippi Electric Power AssociationSouthern California EdisonSouthern CompanySouthern Illinois Power CooperativeSouthern Indiana Gas and Electric CompanySouthern Maryland Electric CooperativeSouthern Minnesota Municipal Power AgencySouthwestern Power AdministrationSouthwestern Public Service CompanySunflower Electric Power CorporationTacoma Public UtilitiesTampa Electric CompanyTennessee Valley AuthorityTri-State Generation and Transmission AssociationTucson Electric PowerUnited Gas Improvement CompanyUnited Illuminating CompanyValley Electric AssociationVillage of ArcadeWabash Valley Power AssociationWestar EnergyWestern Area Power AdministrationWestern Area Power Administration Rocky Mountain RegionWestern Farmers Electric CooperativeWolverine Power Supply CooperativeXcel Energy

© 2024 All rights reserved.

Some logos provided by Clearbit.

Get the Data