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CAISO · California · Public-record retrospective

Arco Substation 70 kV: interconnection queue history

Eleven of twelve requests withdrew; one is still in the queue.

GridVision AI ResearchUpdated

Twelve interconnection requests since 2009: 11 withdrew and 1 remains active.

Built
0
Withdrawn
11
Still in queue
1

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
2009-08-21KINGSOLAR (FKA QUAY VALLEY 20MW SOLAR PV)Solar20 MWWithdrawn2012-07-31
2010-09-29LAS LOMAS SOLARSolar20 MWWithdrawn2012-08-10
2010-09-29SOUTH DOME SOLARSolar20 MWWithdrawn2012-08-10
2010-09-30ORION KERN COUNTY SOLAR ISolar20 MWWithdrawn2011-03-08
2011-03-31KINGSOLAR ISolar20 MWWithdrawn2012-04-17
2011-03-31KINGSOLAR IIISolar20 MWWithdrawn2012-04-17
2014-04-30BROKEN SPOKESolar20 MWWithdrawn2016-04-22
2014-04-30MAGELLAN SOLARSolar20 MWWithdrawn2015-03-24
2014-04-30PANDORA SOLARSolar60 MWWithdrawn2016-06-03
2015-04-30ALAMO SPRINGS SOLAR 2Solar + battery50 MWWithdrawn2021-05-17
2015-04-30ALAMO SPRINGS SOLAR 1Solar + battery80 MWWithdrawn2021-05-17
2018-04-16AZALEASolar + battery61.3 MWStill in queue

What the record shows

  • 350 MW of the 411 MW filed here withdrew.
  • The largest request filed here, 80 MW (solar + battery), withdrew 6.0 years after filing.
  • Three requests were filed on 2014-04-30; all of them withdrew.
  • Two of the 11 withdrawals came within a year of filing.
  • By technology, the requests here were solar 9, solar + battery 3.
  • The longest-standing active request here was filed on 2018-04-16.
  • The dataset records this point of interconnection under seven 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.
  • One request is 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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