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CAISO · California · Public-record retrospective

Manning 500 kV: interconnection queue history

Fifteen of 24 requests withdrew; nine are still in the queue.

GridVision AI ResearchUpdated

24 interconnection requests since 2023: 15 withdrew and 9 remain active.

Built
0
Withdrawn
15
Still in queue
9

The queue record

Every interconnection request the dataset records at this point of interconnection, in filing order.

Interconnection requests recorded at this point of interconnection, with request date, capacity and outcome.
RequestedProjectTechnologyCapacityOutcome
2023-04-17ShoestringSolar + battery135.17 MWStill in queue
2023-04-17Solstice DSolar + battery204.41 MWStill in queue
2023-04-17Solstice CSolar + battery204.53 MWStill in queue
2023-04-17Tumey Hills Energy StorageBattery215.75 MWWithdrawn2025-12-02
2023-04-17Tumey Hills SolarBattery216.1 MWWithdrawn2024-12-02
2023-04-17BoltSolar + battery255.4 MWStill in queue
2023-04-17DT SolarSolar + battery370.2 MWWithdrawn2024-12-02
2023-04-17SunglowSolar + battery372.165 MWStill in queue
2023-04-17StableSolar + battery376.81 MWStill in queue
2023-04-17TumeySolar + battery427 MWWithdrawn2024-12-02
2023-04-17Clay Flats SolarBattery434.24 MWWithdrawn2024-12-02
2023-04-17Clay FlatsBattery437.08 MWWithdrawn2025-04-23
2023-04-17Lupine StorageBattery450 MWWithdrawn2024-12-02
2023-04-17Valhalla Energy StorageBattery513 MWWithdrawn2024-12-02
2023-04-17Solstice ASolar + battery556 MWStill in queue
2023-04-17Panache SolarSolar + battery605 MWWithdrawn2024-12-02
2023-04-17Solstice BSolar + battery606.39 MWStill in queue
2023-04-17IbisSolar + battery810.16 MWWithdrawn2024-12-02
2023-04-17FiveGBSolar + battery1040 MWWithdrawn2024-12-02
2023-04-17HeronSolar + battery1055 MWWithdrawn2024-12-02
2023-04-17EgretSolar + battery1055.56 MWWithdrawn2024-12-02
2023-04-17BlackbirdSolar + battery1056 MWWithdrawn2024-12-02
2023-04-17PionBattery1167.705 MWStill in queue
2023-04-17MidBishop Energy StorageBattery1191 MWWithdrawn2024-12-02

What the record shows

  • 9,876 MW of the 13,755 MW filed here withdrew.
  • The largest request filed here, 1,191 MW (battery), withdrew 1.6 years after filing.
  • 24 requests were filed on 2023-04-17; 15 withdrew and 9 remain active.
  • None of the 15 withdrawals came within a year of filing; the quickest took 1.6 years.
  • By technology, the requests here were solar + battery 16, battery 8.
  • The longest-standing active request here was filed on 2023-04-17.
  • The dataset records this point of interconnection under two spellings, which are combined here.

What a decision record would have to make explicit

  • None of the resolved requests at this node reached operation, and the public record does not say why.
  • Nine requests are unresolved, so the outcome counts at this node can still change.
  • The dataset records outcomes and dates, not reasons, so no cause is attributed to any outcome here.

What this does and does not show

This is a reading of a public dataset, not a customer case study: no engagement, customer or client is involved. The dataset records outcomes — what was built, what withdrew, and when — but not why any project withdrew, so no cause is attributed here. Nothing on this page claims GridVision predicted, influenced or would have changed any outcome, and a pattern at one point of interconnection does not generalise to another.

Source: Lawrence Berkeley National Laboratory, Queued Up: 2026 Edition — project-level interconnection queue dataset. Interconnection requests through year-end 2025. Used under CC BY 4.0; attribution to Lawrence Berkeley National Laboratory and GridTracker.

Related points of interconnection

How the CAISO process works today: CAISO interconnection queue. Comparing candidate nodes for a project? Read how to choose a point of interconnection.

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