Note: if the terms “interconnection queue”, “ISO”, or “RTO” are confusing to you, read our 1-min primer/FAQ here first
We used Interconnection.fyi‘s daily-updated dataset to analyze the state of the interconnection queues this month.
To be precise, we took a snapshot of the queue from Interconnection.fyi’s dataset at Jan 1, 2024 to produce these charts. Interconnection.fyi processes daily updates of the queue - for access to this historical data, or if you want any reports constructed of the data, contact us here.
Here are some trends we’ve found:
What’s in the queue right now?
1.3 terawatts of capacity in the queue
Interconnection.fyi aggregates queue data across all 6 major RTOs/ISOs and 20 utilities in the U.S.
Based on this data there are currently at least 1.3 terawatts of capacity in the queue. 1.3 terawatts of capacity being planned. And that is not counting the long tail of utilities and other distributed energy assets Interconnection.fyi is not gathering presently in the US.
How much is 1.3 terawatts? Well there’s 300 GW (0.3 terawatt) in operation currently that have gone thru the queues listed above. 1.3 terawatts is 1,300 gigawatts, and 1 GW could power around 850,000 households at a given time.
Analysis of capacity in queues
Let’s look more into the in-queued capacity data
Total capacity by generation type
Standalone solar is the dominant generation type in the queue currently, followed by wind and battery storage. There’s a long-tail of hybrid generation (i.e. solar AND battery storage, or solar AND wind) as well.
Breaking it down further into each power market:
Total capacity in the queue is higher than existing capacity in many power markets
Note: existing capacity for southeast & west non-ISO is not shown since not all non-ISO utilities publish their in-service/operational queue projects
Planned capacity entering the queue in 2023 declined slightly after several years of high growth
Excluding CAISO and MISO, we still have an upward trend
And here’s the same chart broken down by power market , showing how MISO and CAISO have effectively stopped taking new requests in their queues in 2023 and 2022 respectively. Scroll to the bottom of this article to interact with an interactive version of this chart.
Proposed completion time analysis
If we take the proposed completion date and subtract it by the enqueued date, we get a proposed completion time
CAISO and PJM have the longest median proposed completion times over all time (CAISO’s spread arguably worse)
Median completion time decreased for projects entering the queue in 2022/2023
The majority of proposed completion times for active requests will happen before 2030
Conclusion
By the way, if you’d like to interact with the data via interactive graphics, checkout the embed below (or here) and the charts in our front page https://interconnection.fyi/
👉 If you’d like to purchase the underlying data from this report or want to run a report on a current or historical dataset, see our various self-data products here or email us here
Addendum
Jesse Jenkins (the renowned energy researcher based at Princeton) asked for a chart plotting projects entering and leaving the queue in the same chart. Here it is!
Interactive visualizations:
Interconnection.fyi
Tracking U.S. ISO & utility interconnection queues
Interconnection requests in list format
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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 LightGeorgia TransmissionGrand River Dam AuthorityGrand River EnergyGrant County Public Utility DistrictGridLiance WestGridUnityHenderson Municipal Power and LightHoosier EnergyISO New EnglandITC Great PlainsITC MidwestITC TransmissionIdaho Power CompanyImperial Irrigation DistrictIndependence Power and LightIndianapolis Power and LightJacksonville Electric AuthorityJersey 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 GridNavajo-CrystalNebraska 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 CompanyPlatte River Power AuthorityPortland 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 CooperSeminole Electric CooperativeSouth 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 Desert Southwest RegionWestern Farmers Electric CooperativeWolverine Power Supply CooperativeXcel Energy
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