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CAISO · California · Public-record retrospective

Tranquility 230 kV: interconnection queue history

Six of fourteen requests withdrew; eight are still in the queue.

GridVision AI ResearchUpdated

Fourteen interconnection requests since 2015: 6 withdrew and 8 remain active.

Built
0
Withdrawn
6
Still in queue
8

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
2015-04-30LUNA PRISM (FKA: MOON PRISM 2)Battery19.94 MWWithdrawn2018-05-17
2015-04-30LUNA VALLEY SOLARSolar + battery204 MWStill in queue
2015-04-30SCARLETSolar + battery400 MWStill in queue
2016-05-02HEARTLAND SOLAR-2Solar1044.7625 MWWithdrawn2017-03-13
2017-05-01HEARTLAND 1Solar + battery156.04 MWStill in queue
2017-05-01HEARTLAND 2Solar + battery156.05 MWStill in queue
2017-05-01SONRISASolar + battery200 MWStill in queue
2017-05-01GOLDEN SQUARESolar + battery205.39 MWWithdrawn2018-04-20
2018-04-16HEARTLAND 3Solar + battery154.89 MWWithdrawn2019-03-07
2018-04-16CASY SOLARSolar + battery203.5 MWWithdrawn2019-05-07
2021-04-15PEACEFUL HOLLOW BESSBattery100 MWStill in queue
2021-04-15CLARKSONSolar + battery203.849 MWStill in queue
2021-04-15ELYSIANSolar + battery206.091 MWStill in queue
2023-04-17Heartland PVSolar305 MWWithdrawn2024-12-02

What the record shows

  • 1,933 MW of the 3,560 MW filed here withdrew.
  • The largest request filed here, 1,045 MW (solar), withdrew 0.9 years after filing.
  • Four requests were filed on 2017-05-01; 1 withdrew and 3 remain active.
  • Three of the 6 withdrawals came within a year of filing.
  • By technology, the requests here were solar + battery 10, battery 2, solar 2.
  • The longest-standing active request here was filed on 2015-04-30.
  • The dataset records this point of interconnection under five 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.
  • Eight 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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