CAISO · California
Three projects filed the same day. Two were built, one withdrew.
Colorado River Substation 230 kV
Sixteen interconnection requests since 2011 at one substation: three reached commercial operation, eleven withdrew, two remain active.
- Built
- 3
- Withdrawn
- 11
- Still in queue
- 2
The queue record
Every interconnection request the dataset records at this point of interconnection, in filing order.
| Requested | Project | Technology | Capacity | Outcome |
|---|---|---|---|---|
| 2011-03-31 | COLORADO RIVER 48 MW | Solar | 48 MW | Withdrawn2012-04-26 |
| 2011-03-31 | MESA SOLAR | Solar | 500 MW | Withdrawn2012-04-18 |
| 2011-03-31 | SP BLYTHE 1 | Solar | 221 MW | Withdrawn2016-11-09 |
| 2011-11-15 | MESA VERDE SOLAR | Solar | 80 MW | Withdrawn2013-05-06 |
| 2011-11-15 | BLYTHE MESA SOLAR II | Solar | 500 MW | Withdrawn2012-02-24 |
| 2012-04-02 | BLYTHE MESA SOLAR II - C5 | Solar | 500 MW | Withdrawn2012-07-26 |
| 2012-04-02 | MULE MOUNTAIN - C5 | Solar | 150 MW | Withdrawn2013-02-28 |
| 2015-04-30 | CRIMSON | Battery | 350 MW | Built2022-10-28 · 7.5 yrs |
| 2015-04-30 | IRISH | Gas | 600 MW | Withdrawn2017-09-05 |
| 2015-04-30 | ARLINGTON | Solar + battery | 409.9 MW | Built2023-10-20 · 8.5 yrs |
| 2017-05-01 | QUARTZITE 10 | Solar | 154.59 MW | Withdrawn2017-07-14 |
| 2017-05-01 | MESAVILLE SOLAR | Solar + battery | 476.33 MW | Withdrawn2020-05-11 |
| 2018-04-16 | QUARTZITE SOLAR 11 | Solar + battery | 150 MW | Built2024-12-17 · 6.7 yrs |
| 2019-04-15 | CALYPSO SOLAR | Solar + battery | 400 MW | Still in queue |
| 2020-04-15 | AMETHYST SOLAR | Solar + battery | 200 MW | Withdrawn2020-07-06 |
| 2020-04-15 | GRACE ENERGY CENTER | Solar + battery | 508.56 MW | Still in queue |
What the record shows
- CRIMSON, IRISH and ARLINGTON were all filed on 2015-04-30. Two reached commercial operation; the third withdrew in 2017.
- The largest request in that cohort — IRISH, at 600 MW — is the one that withdrew. Capacity did not track survival at this node.
- The two projects that were built from that cohort took 7.5 and 8.5 years from request to commercial operation.
- Every one of the seven requests filed between 2011 and 2012 withdrew; five of them within about a year of filing.
- MESAVILLE SOLAR, at 476.33 MW, stayed in the queue for three years before withdrawing in 2020.
What a decision record would have to make explicit
- Same-day filings at one node diverged completely, so queue position and filing date alone did not separate them.
- A decision record covering this node in 2015 would have had to state, as unknowns, the network conditions and study exposure that distinguished the three requests — none of which are in the public queue record.
- The dataset does not record why any of these projects withdrew, so no cause can be attributed from this record alone.
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.