CAISO interconnection nodes
Public Queue Report + Cluster 15 report, unified per point of interconnection, joined to official Cluster 16 POI statements. CAISO report run date 2026-10-12. Every number traces to a CAISO row.
Map (size = pipeline MW, fill = storage churn) · Weekly diff · Node Watch note · Survival by cluster · 321 node pages.
Top 40 nodes by pipeline MW (legacy active + Cluster 15 active)
storage_churn = storage MW withdrawn in the last 5 years ÷ (active + operating storage MW). c15_survival = C15 active ÷ (C15 active + C15 withdrawn). lcr_status = CAISO Local Capacity Area (Resource Adequacy geography) as the 2027 Local Capacity Technical Report's boundary lists state it — "in" or "outside" a named area; blank means the report does not name the station, not "outside every area". Click a node for its projects and geocode provenance.
| poi_base | county | utility | legacy_active_mw | c15_active_mw | operating_mw | wd_recent_mw | storage_churn | c15_survival | p2_attrition | tpd25_denied_ppa_mw | lcr_status | c16_poi_status |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| WINDHUB SUBSTATION | KERN | SCE | 4,050 | 550 | 2,268 | 1,450 | 0.34 | 0.55 | 0.17 | 150 | ||
| RED BLUFF SUBSTATION | RIVERSIDE | SCE | 2,867 | 725 | 1,620 | 3,025 | 0.84 | 1.00 | 0.43 | 0 | outside LA Basin | |
| VINCENT SUBSTATION | LOS ANGELES | SCE | 2,070 | 1,450 | 199 | 1,950 | 0.53 | 0.54 | 0.42 | 0 | outside Big Creek/Ventura | |
| WHIRLWIND SUBSTATION | KERN | SCE | 2,472 | 801 | 2,120 | 300 | 0.09 | 1.00 | 0.23 | 0 | ||
| DELANEY-COLORADO RIVER | MARICOPA | DCRT | 3,200 | 0 | 500 | 0 | 0.00 | n/a | 0.00 | 450 | ||
| TROUT CANYON SUBSTATION | CLARK | GLW | 3,000 | 0 | 0 | 1,500 | 0.54 | 0.00 | 0.00 | 625 | ||
| DRY LAKE SW STA | KINGS | PGAE | 0 | 2,950 | 0 | 0 | 0.00 | 1.00 | n/a | 0 | AVAILABLE | |
| MANNING | FRESNO | LSPC | 0 | 2,662 | 0 | 1,782 | 0.67 | 0.60 | n/a | 0 | ||
| GATES SUBSTATION | FRESNO | PGAE | 2,521 | 0 | 820 | 839 | 0.36 | 0.00 | 0.27 | 0 | outside Greater Fresno | RELIEVED |
| MOSS LANDING | MONTEREY | PGAE | 2,250 | 199 | 932 | 0 | 0.00 | 1.00 | 0.00 | 0 | in Greater Bay Area | |
| LUGO | SAN BERNARDINO | SCE | 500 | 1,798 | 0 | 4,953 | 2.16 | 0.29 | 0.00 | 0 | outside LA Basin | |
| TESLA | ALAMEDA | PGAE | 1,280 | 1,000 | 436 | 2,000 | 0.77 | 0.33 | 0.13 | 0 | outside Greater Bay Area | CONDITIONAL |
| LOS BANOS | MERCED | PGAE | 1,830 | 400 | 0 | 2,645 | 1.26 | 0.17 | 0.05 | 0 | outside Greater Fresno | |
| COLORADO RIVER SUBSTATION | RIVERSIDE | SCE | 1,715 | 301 | 2,259 | 700 | 0.10 | 0.43 | 0.48 | 575 | ||
| VALLEY SWITCH | NYE | GLW | 550 | 1,450 | 730 | 1,400 | 0.84 | 0.51 | 0.00 | 0 | ||
| MOHAVE SUBSTATION | CLARK | SCE | 1,770 | 0 | 0 | 1,050 | 0.59 | 0.00 | 0.28 | 0 | ||
| LAGUNA BELL SUBSTATION | LOS ANGELES | SCE | 750 | 1,000 | 0 | 400 | 0.23 | 1.00 | 0.00 | 0 | ||
| ANTELOPE SUBSTATION | LOS ANGELES | SCE | 1,420 | 197 | 90 | 620 | 0.53 | 1.00 | 0.48 | 0 | in Big Creek/Ventura | |
| TRANQUILITY | FRESNO | PGAE | 1,575 | 0 | 0 | 0 | 0.00 | n/a | 0.01 | 0 | in Greater Fresno | |
| EAST COUNTY SUBSTATION | SDGE | 1,273 | 300 | 276 | 1,200 | n/a | 1.00 | 0.56 | 973 | |||
| HOODOO WASH SWITCHYARD | YUMA | SDGE | 1,570 | 0 | 790 | 400 | 0.23 | n/a | 0.14 | 0 | ||
| MOORPARK SUBSTATION | VENTURA | SCE | 1,500 | 0 | 0 | 1,475 | 0.98 | n/a | 0.24 | 0 | ||
| HARLAN SW STA | FRESNO | PGAE | 0 | 1,450 | 0 | 1,150 | 0.79 | 0.56 | n/a | 0 | AVAILABLE | |
| MIDWAY SUBSTATION | KERN | PGAE | 1,385 | 0 | 0 | 867 | 0.69 | n/a | 0.19 | 200 | outside Kern | |
| CIELO AZUL SUBSTATION | LA PAZ | DCRT | 350 | 1,000 | 0 | 4,000 | 2.96 | 0.50 | 0.85 | 350 | ||
| MANNING-MIDWAY | FRESNO | PGAE | 1,150 | 0 | 0 | 0 | 0.00 | n/a | 0.00 | 0 | ||
| NORTH GILA - IMPERIAL VALLEY | IMPERIAL | SDGE | 1,150 | 0 | 0 | 0 | 0.00 | n/a | 0.00 | 0 | ||
| KRAMER SUBSTATION | SAN BERNARDINO | SCE | 1,050 | 0 | 432 | 150 | 0.00 | n/a | 0.21 | 0 | ||
| COLORADO RIVER - PALO VERDE | LA PAZ | SCE | 1,000 | 0 | 0 | 0 | 0.00 | n/a | 0.00 | 1,000 | ||
| DIABLO CANYON | SAN LUIS OBISPO | PGAE | 1,000 | 0 | 0 | 4,900 | n/a | n/a | 0.74 | 0 | ||
| RIO HONDO SUBSTATION | LOS ANGELES | SCE | 1,000 | 0 | 0 | 0 | 0.00 | n/a | 0.17 | 0 | in LA Basin | |
| ARCO | KERN | PGAE | 915 | 0 | 60 | 300 | 0.33 | n/a | 0.36 | 100 | ||
| CHINO SUBSTATION | SAN BERNARDINO | SCE | 400 | 500 | 0 | 349 | 0.39 | 0.72 | 0.00 | 0 | ||
| CALCITE SUBSTATION | SAN BERNARDINO | SCE | 255 | 638 | 0 | 200 | 0.09 | 1.00 | 0.59 | 0 | ||
| IMPERIAL VALLEY SUBSTATION | IMPERIAL | SDGE | 875 | 0 | 1,347 | 2,435 | 2.45 | 0.00 | 0.59 | 177 | in San Diego-Imperial Valley | |
| DEVERS SUBSTATION | RIVERSIDE | SCE | 450 | 400 | 1,250 | 1,529 | 1.20 | 1.00 | 0.52 | 0 | in LA Basin | |
| DELANEY SUBSTATION | MARICOPA | DCRT | 850 | 0 | 0 | 0 | 0.00 | n/a | 0.00 | 0 | ||
| LOS BANOS - GATES #1 | FRESNO | PGAE | 0 | 800 | 0 | 0 | 0.00 | 1.00 | n/a | 0 | ||
| VACA-DIXON | SOLANO | PGAE | 800 | 0 | 0 | 700 | 0.88 | n/a | 0.47 | 0 | outside North Coast/North Bay | |
| GAMEBIRD SUBSTATION | NYE | VEA | 744 | 0 | 0 | 0 | 0.00 | n/a | 0.00 | 0 |
TPD allocation, 2025 cycle
Top 15 nodes by MW that sought Transmission Plan Deliverability in CAISO's 2025 allocation cycle.
| poi_base | county | utility | tpd25_req_mw | tpd25_alloc_mw | tpd25_unalloc_mw | tpd25_denied_mw | tpd25_denied_ppa_mw | tpd25_denied_D_mw | tpd24_fcdsa_projects |
|---|---|---|---|---|---|---|---|---|---|
| MOSS LANDING | MONTEREY | PGAE | 1,500 | 1,500 | 0 | 0 | 0 | 0 | 0 |
| GATES SUBSTATION | FRESNO | PGAE | 1,396 | 396 | 1,000 | 1,000 | 0 | 1,000 | 2 |
| COLORADO RIVER - PALO VERDE | LA PAZ | SCE | 1,000 | 0 | 1,000 | 1,000 | 1,000 | 0 | 0 |
| EAST COUNTY SUBSTATION | SDGE | 973 | 0 | 973 | 973 | 973 | 0 | 1 | |
| COLORADO RIVER SUBSTATION | RIVERSIDE | SCE | 875 | 0 | 875 | 875 | 575 | 300 | 1 |
| LAMBIE SWITCHING STATION | SOLANO | PGAE | 800 | 400 | 400 | 400 | 0 | 400 | 0 |
| IMPERIAL VALLEY SUBSTATION | IMPERIAL | SDGE | 777 | 0 | 777 | 777 | 177 | 600 | 1 |
| TROUT CANYON SUBSTATION | CLARK | GLW | 625 | 0 | 625 | 625 | 625 | 0 | 1 |
| RIO HONDO SUBSTATION | LOS ANGELES | SCE | 600 | 600 | 0 | 0 | 0 | 0 | 3 |
| WHEELER RIDGE | KERN | PGAE | 600 | 0 | 600 | 600 | 555 | 45 | 0 |
| OTAY MESA SWITCHYARD | SAN DIEGO | SDGE | 550 | 0 | 550 | 550 | 250 | 300 | 0 |
| CONTRA COSTA SUBSTATION | CONTRA COSTA | PGAE | 550 | 449 | 101 | 0 | 0 | 0 | 0 |
| RECTOR SUBSTATION | TULARE | SCE | 550 | 350 | 200 | 200 | 0 | 200 | 0 |
| MOORPARK SUBSTATION | VENTURA | SCE | 500 | 462 | 38 | 0 | 0 | 0 | 1 |
| BEATTY | NYE | GLW | 500 | 0 | 500 | 500 | 500 | 0 | 0 |
"Denied" is MW refused outright (0 %); "unalloc" is requested minus allocated, so it also carries the remainder
left by partial allocations. A refusal is not one thing: CAISO allocates by group — A = executed power purchase agreement requiring FCDS, or an LSE serving its own load; B = shortlisted for, or actively negotiating, a power purchase agreement; C = already in commercial operation for the capacity seeking TP deliverability; D = no PPA; electing the Section 8.9.2.3 (financial-security) path. A 0 % in
group D is the expected result for an uncontracted project; a 0 % in group A or B (tpd25_denied_ppa_mw)
is a contracted or shortlisted project that did not get deliverability, and is the number to quote. These rows are
joined through all three sheets of the public report, so a node's TPD history can include requests whose project has
since withdrawn. The CAISO file states no reason.
Distribution-level (WDAT) activity at CAISO nodes
Top 10 CAISO nodes by active MW in the wholesale distribution (WDAT) queue at the same substation.
| poi_base | county | utility | wdat_active_projects | wdat_active_mw | wdat_ft_over_cap_mw | wdat_inservice_mw |
|---|---|---|---|---|---|---|
| EAGLE ROCK | 1 | 131 | 0 | 0 | ||
| CABRILLO SUBSTATION | SANTA BARBARA | PGAE | 1 | 60 | 0 | 99 |
| LERDO | KERN | PGAE | 12 | 40 | 0 | 8 |
| WEBER | SAN JOAQUIN | PGAE | 16 | 29 | 5 | 22 |
| LOS ESTEROS | SANTA CLARA | PGAE | 1 | 28 | 0 | 0 |
| LAMONT | KERN | PGAE | 7 | 24 | 0 | 2 |
| MORGAN HILL SUBSTATION | SANTA CLARA | PGAE | 3 | 20 | 0 | 1 |
| SHINGLE SPRINGS SUBSTATION | EL DORADO | PGAE | 4 | 20 | 0 | 2 |
| TRACY SUBSTATION | ALAMEDA | PGAE | 8 | 20 | 0 | 6 |
| CHOWCHILLA | MADERA | PGAE | 5 | 19 | 0 | 1 |
WDAT requests connect below CAISO's transmission grid; they carry no CAISO deliverability unless separately studied.
Rows posted as Fast Track but above the 5 MW Fast Track ceiling are held out of the active figures and shown
separately (wdat_ft_over_cap_mw); the cause is not established.
Source: PG&E Wholesale Distribution Queue, as dated in the file.
Official Cluster 16 POI statements
Encoded only where a CAISO / PTO notice names the POI. Absence of a row is not availability. The latest dated statement per POI wins.
| poi_base | utility | county | c16_poi_status | c16_poi_note | legacy_active_mw | c15_active_mw |
|---|---|---|---|---|---|---|
| DRY LAKE SW STA | PGAE | KINGS | AVAILABLE | New 500 kV switching station; stated as a viable POI option for C16 [2026-01-15] | 0 | 2,950 |
| HARLAN SW STA | PGAE | FRESNO | AVAILABLE | New 500 kV switching station designed with future expansion capability [2026-01-15] | 0 | 1,450 |
| BITTERWATER SW STA | PGAE | KERN | AVAILABLE | New 230 kV switching station designed with future expansion capability [2026-01-15] | 0 | 300 |
| TESLA | PGAE | ALAMEDA | CONDITIONAL | Conceptual layout modification enables new 230 kV terminals [2026-01-15] | 1,280 | 1,000 |
| GATES SUBSTATION | PGAE | FRESNO | RELIEVED | 500 kV removed from Table G2-A space limitation per revised plan [2026-01-15] | 2,521 | 0 |
No figure on this site states a cause. CAISO files carry no withdrawal reason beyond "IC Request".
Screening tool, not engineering advice. Built from public filings by an engineer who is not a licensed PE. Verify every figure against the source filing named in its row before you rely on it for any decision. No warranty of any kind. Not affiliated with CAISO, EIA, or any utility. No engineering services are offered.