MIDWAY SUBSTATION

KERN (CA) · PGAE · node key MIDWAY · CAISO run date 2026-10-12

Seven questions a developer, lender or counsel asks before filing here. Every figure is a CAISO row; Not public marks what the public files cannot answer and where to get it. Definitions: methodology.

Can you get in?

No official Cluster 16 availability statement names this POI. Absence of a statement is not availability.

Not public: per-constraint transmission headroom at this POI — CAISO's cluster study reports (RIMS login).

Not on this site yet: the zonal transmission-capability table CAISO publishes for cluster scoring — public; the join is planned.

Who is ahead of you?

1,385 MW (n=4)

queued ahead of a new request (legacy + C15)

1,350 MW (n=3)

with an executed interconnection agreement · public report; C15 has no IA yet

0 MW (n=0)

operating at this node

0 MW

Cluster 15 requests seeking full capacity

Not public: who the interconnection customers are (the queue) — CAISO's public files carry project names only; the projects table below is the full public record. EIA-860 names the owners of what already operates nearby, not of what is queued.

Do projects leave after seeing the costs?

1,700 MW (n=6)

received Phase II / Facilities Study results here · any sheet, public report

315 MW (n=2)

of that, withdrew with results in hand

0.19 (n=6)

Phase II attrition (MW share)

Not public: the network upgrade cost allocated to a project here — Phase I / Phase II study reports, served through RIMS. Ask the incumbent developer or request the report; nothing public reconstructs it.

Will you be deliverable?

200 MW (n=1)

2025 TPD requested at this node

0 MW

allocated

200 MW

refused at 0 % — contracted / shortlisted (groups A+B)

0 MW

refused at 0 % — no PPA (group D)

1 / 0

2024 cycle: projects given full / partial capacity

A 0 % in group D is the expected result for an uncontracted project; a 0 % in group A or B is a contracted project that did not get deliverability. Rows are joined through all three sheets, so a request whose project has since withdrawn still appears. CAISO states no reason.

Will the power be worth anything here?

Outside Kern local area boundary — Report p.100 lists Midway as delineating the Kern-PP SUB-AREA. Midway 230 kV and 500 kV. The report defines no Kern area boundary list Final 2027 LCT Report [2026-04-29]

Not on this site yet: day-ahead price history at this POI — CAISO OASIS publishes it; it is shown only for a pricing node confirmed by hand in data/poi_pnodes.csv, and this one is not confirmed yet.

Will the land pass intake?

Intake scoring under the 2023 IPE rewards site control, permitting progress and system need before study begins. Parcel, zoning, Williamson Act and CEC exclusion screens run for Kings and Kern counties (caiso-siting parcels, layers screen); results are in outputs/parcels_*.md for the nodes they were run on and are not yet rendered per node here.

Not public: landowner willingness and option terms — county assessor parcels give ownership class, not intent; owner names are withheld on purpose.

How long, and who gave up?

867 MW (n=5)

withdrawn since 2022 (both reports)

867 MW

of that, storage

0.69 (n=9)

storage churn · withdrawn storage ÷ queued + operating storage

n/a (n=0)

Cluster 15 survival · active ÷ (active + withdrawn)

2,872 MW (n=12)

all-time withdrawn since 2006 · mostly wind/solar-era; colour, not signal

2024-05-11 to 2032-03-17

current on-line dates of active projects

Cluster-level time-to-withdrawal curves are on the Survival page; they compare process regimes, not only nodes.

Projects at this node (16)

Both reports. cod = current on-line date (public report) or proposed on-line date (Cluster 15). ia_status exists only in the public report. Cluster 15 deliverability is requested, not allocated.

project_name	queue_position	sheet_status	cluster	net_mw	storage_mw	deliverability	ia_status	cod	withdrawn_date
BUTTONBUSH SOLAR HYBRID ENERGY CENTER	1596	ACTIVE	C12	800	800	FULL CAPACITY	EXECUTED	2029-08-01
BUTTONBUSH SOLAR 2	1987	ACTIVE	C14	350	350	FULL CAPACITY	EXECUTED	2032-03-17
WINSTON HYBRID PV AND BESS	1751	ACTIVE	C13	200	102	FULL CAPACITY	EXECUTED	2028-12-10
SUNRISE POWER IMPROVEMENT	1745	ACTIVE	C13	35	0	ENERGY ONLY		2024-05-11
LA PALOMA II	402	WITHDRAWN	SERIAL LGIP	600	0			2012-06-01	2008-08-19
LA PALOMA PEAKING	404	WITHDRAWN	SERIAL LGIP	450	0			2011-06-01	2008-08-19
SUR VISTA	2019	WITHDRAWN	C14	352	352	FULL CAPACITY		2024-07-31	2022-12-28
PEONY	1595	WITHDRAWN	C12	350	0	FULL CAPACITY		2022-11-30	2020-03-12
KAIROS HYBRID	1737	WITHDRAWN	C13	350	179	FULL CAPACITY		2025-10-30	2021-05-06
DRIFTWOOD STELLA	1394	WITHDRAWN	C10	200	200	ENERGY ONLY	EXECUTED	2026-11-01	2026-07-17
LIMON ENERGY PARK	1500	WITHDRAWN	C11	125	25	FULL CAPACITY		2020-12-01	2019-03-06
CANNAE	2010	WITHDRAWN	C14	115	115	FULL CAPACITY		2030-12-03	2025-03-27
MAMMOTH ENERGY STORAGE	1501	WITHDRAWN	C11	100	100	FULL CAPACITY		2021-07-09	2019-04-25
SHEATH STORAGE	1990	WITHDRAWN	C14	100	100	FULL CAPACITY		2024-06-30	2022-12-16
SALIX	1991	WITHDRAWN	C14	100	100	FULL CAPACITY		2024-06-30	2022-12-16
SUNGEN 1	403	WITHDRAWN	SERIAL LGIP	30	0			2011-12-31	2010-12-07

TPD allocation requests at this node (2)

CAISO Transmission Plan Deliverability allocation results, joined on queue position through all three sheets of the public report (a request whose project has since withdrawn still appears). 2024 rows carry no MW. Groups: 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.

tpd_year	queue_id	project_name	allocation_group	mw_requested	allocation_pct	mw_allocated	status
2025	1394	DRIFTWOOD STELLA	A	200	0%	0	NONE
2024	1987	BUTTONBUSH SOLAR 2	D		100%		FCDSA

WDAT requests at this substation (8)

WDAT = distribution-level queue at the same substation, PG&E file today; not CAISO deliverability. WDAT requests connect below CAISO's transmission grid; they carry no CAISO deliverability unless separately studied.

queue_position	status_raw	process	gen_type	net_mw	request_received	ia_status
0185-WD	Withdrawn	Independent Study	Solar PV	20	2010-09-30	Withdrawn
3673-WD	Withdrawn	Cluster	Battery	20	2023-10-12	Withdrawn
0255-WD	Withdrawn	Cluster	Solar PV	10	2011-02-22	Withdrawn
0324-WD	Withdrawn	Cluster	Solar PV	10	2011-03-30	Withdrawn
3492-RD	Withdrawn	Detailed Study	Solar PV	7	2023-04-13	Withdrawn
3640-WD	Withdrawn	DGSP	Solar PV	5	2023-09-22	Withdrawn
3830-RD	Withdrawn	Detailed Study	Solar PV	5	2024-02-05	Withdrawn
3929-WD	Withdrawn	Cluster	Solar PV	5	2024-03-31	Withdrawn

Geocode provenance

Position is approximate or unknown (ambiguous): several OSM features share this name more than 50 km apart — the position may be the wrong one.

geo_method: ambiguous
geo_score: 0.50
osm_name: Midway Substation
lat, lon: 35.40294, -119.45230

All metrics

metric	value	definition
`legacy_active_mw`	1,385	active MW in the public report (C14 and earlier)
`c15_active_mw`	0	active MW in the Cluster 15 report
`operating_mw`	0	completed MW in the public report
`pipeline_storage_mw`	1,252	storage MW inside legacy_active_mw + c15_active_mw
`operating_storage_mw`	0	storage MW inside operating_mw (completed, public report)
`wd_recent_mw`	867	withdrawn in the last 5 years (both reports)
`wd_recent_storage_mw`	867	storage MW of those rows — each project's storage components capped at its net-to-grid figure; a handful of filings report net-to-grid as 0 and keep the component MW, so this can exceed the row above at 3 nodes.
`wd_post_phase2_mw`	315	withdrew AFTER Phase II / Facilities Study results (public report only)
`p2_reached_mw`	1,700	MW of projects that received Phase II / Facilities Study results here (public report, any sheet)
`p2_withdrawn_mw`	315	of those, MW that then withdrew (== wd_post_phase2_mw)
`p2_attrition`	0.19	p2_withdrawn_mw / p2_reached_mw — share of studied MW that left with results in hand
`committed_mw`	1,350	ACTIVE MW holding an executed interconnection agreement (public report)
`churn_n`	9	projects behind storage_churn (withdrawn recent + queued + operating)
`c15_n`	0	projects behind c15_survival
`p2_n`	6	projects behind p2_attrition
`eia_plants`	0	operable EIA-860 plants within 5 km of the node's mapped position (positioned nodes only)
`eia_nameplate_mw`	0	their nameplate MW, all technologies (EIA-860 Generator file, Operable sheet)
`eia_storage_mwh`	0	battery energy capacity among them (EIA-860 Energy Storage file), as reported
`eia_storage_1h_mw`		storage MW at units whose reported MWh is no more than their MW (one hour or less); shown with 'duration not established' because the value may reflect how the form was filled
`eia_proposed_mw`	0	nameplate MW in EIA-860's Proposed sheet within the same radius (planned / under construction)
`wd_alltime_mw`	2,872	every withdrawn MW since 2006 (includes dead wind/solar-era projects)
`storage_churn`	0.69	wd_recent_storage_mw / (active + operating storage MW) — the one to quote
`churn_alltime`	2.07	wd_alltime_mw / (pipeline + operating MW) — historical color only
`c15_survival`	n/a	c15_active / (c15_active + c15_withdrawn)
`c15_fcds_req_mw`	0	C15 active MW that requested Full Capacity Deliverability Status (requested, not allocated)
`tpd25_projects`	1	projects at the node that sought TPD in CAISO's 2025 allocation cycle
`tpd25_req_mw`	200	MW at the node that sought TPD in CAISO's 2025 allocation cycle
`tpd25_alloc_mw`	0	MW allocated in that cycle (requested × allocation %)
`tpd25_denied_mw`	200	MW requested by rows that received 0 %
`tpd25_unalloc_mw`	200	requested minus allocated: MW refused outright PLUS the remainder left by partial allocations — quote this for 'what the developer did not get'
`tpd25_unknown_mw`	0	MW requested by rows with no allocation percentage in the file; 0 today
`tpd25_req_A_mw`	200	of tpd25_req_mw, requested in allocation group A: executed PPA (or LSE own load)
`tpd25_req_B_mw`	0	of tpd25_req_mw, requested in allocation group B: shortlisted / negotiating a PPA
`tpd25_req_C_mw`	0	of tpd25_req_mw, requested in allocation group C: already in commercial operation
`tpd25_req_D_mw`	0	of tpd25_req_mw, requested in allocation group D: no PPA, Section 8.9.2.3 path
`tpd25_denied_A_mw`	200	of tpd25_denied_mw, refused at 0 % in group A
`tpd25_denied_B_mw`	0	of tpd25_denied_mw, refused at 0 % in group B
`tpd25_denied_C_mw`	0	of tpd25_denied_mw, refused at 0 % in group C
`tpd25_denied_D_mw`	0	of tpd25_denied_mw, refused at 0 % in group D
`tpd25_denied_ppa_mw`	200	refused MW in groups A + B: contracted or shortlisted projects that did not get deliverability; the refusal that matters
`tpd24_fcdsa_projects`	1	projects at the node allocated Full Capacity in the 2024 cycle
`lcr_status`	outside Kern	CAISO Local Capacity Area (Resource Adequacy geography): 'in <area>' or 'outside <area>' as the LCT report's boundary lists state it; blank = not encoded, never 'outside every area'
`lcr_sub_area`		sub-area / load pocket within that area, when the LCT report delineates it
`wdat_active_projects`	0	active WDAT requests at the same substation (WDAT = distribution-level queue at the same substation, PG&E file today; not CAISO deliverability)
`wdat_active_mw`	0	MW of active WDAT (distribution-level) requests at the same substation (PG&E file today)
`wdat_active_storage_mw`	0	storage MW attributed from wdat_active_mw — an assumption: the PG&E file publishes one MW figure per request, so storage-only requests count in full and solar+storage requests count at half (160 of 1,011 active requests carry storage; 362 of their 479 MW is attributed as storage).
`wdat_inservice_mw`	0	WDAT MW already in service at that substation
`wdat_withdrawn_mw`	82	WDAT MW withdrawn at that substation (all-time in the file)
`wdat_ft_over_cap_n`	0	active Fast Track requests above the 5 MW Fast Track ceiling — held out of wdat_active_*
`wdat_ft_over_cap_mw`	0	MW of those held-out rows, as posted; cause not established

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.