ISO/06 · Western Interconnection (14 states)
Fragmented markets, converging into something new.
EDAM Go-Live
2026+
Markets+ Go-Live
2027+
Heat Dome Risk
Elevated
TERMINAL · ISO/06
LMP HEATMAP · $/MWh · 7D × 24H
MIN $14 · MAX $160QUEUE AGING · GW
Median age: 3.4y · trending +0.6y YoY
TOP CONSTRAINED NODES · 24H
FERC DOCKET STREAM
Capacity auction parameter update
TariffOrder 2023 queue reform compliance
QueueRTEP transmission expansion proposal
TransmissionAffected systems study protocol revision
ProcessCost allocation complaint — load zone
LitigationILLUSTRATIVE TERMINAL VIEW · PRODUCTION FEEDS UNDER NDA · REFRESH 5 MIN
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The Western Interconnection has historically operated through bilateral utilities and the CAISO Western Energy Imbalance Market. The launch of EDAM (CAISO) and Markets+ (SPP) is now reshaping how 14 states transact power — with hyperscaler siting in Phoenix, Reno, and Hillsboro creating the demand-side tension.
STRUCTURAL METRICS
LIVE-TRACKEDConstraint Map
N/01
CriticalHyperscale + industrial siting; record summer peaks.
N/02
ElevatedTahoe-Reno Industrial; data center + battery manufacturing.
N/03
ElevatedSilicon Forest expansion; transmission constrained.
N/04
WatchNew transmission unlocks generation export to CA.
Queue Dynamics
Interconnection processes
Utility-by-utility outside CAISO
Western Resource Adequacy Program (WRAP)
Regional capacity construct emerging
Transmission expansion
TransWest, SunZia, Greenlink Nevada in flight
Themes
T/01
EDAM vs. Markets+ utility selections will determine the operating shape of the West for a decade.
T/02
First regional resource adequacy program in the West formalizes capacity planning across utilities.
T/03
Recent western heat events have repriced the value of intra-regional transmission and capacity diversity.
T/04
Snowpack and Pacific NW hydro performance remain primary swing factors.
Rule Changes & Filings
2024–2026
PacifiCorp, BPA decisions, and BANC posture set the EDAM footprint.
2024–2027
SPP-led day-ahead expansion offers an alternative footprint.
Ongoing
First binding compliance years materially affect capacity planning.
Positioning
The Western Interconnection is in the middle of a market schism. EDAM and Markets+ are pulling utilities into two different day-ahead constructs, and the resulting footprint will determine western LMPs and reliability economics for a decade. Underwriting in WECC without a position on day-ahead architecture is incomplete.
Buyer's Lens
TransWest, SunZia, and Greenlink unlock generation in Wyoming, New Mexico, and Nevada to California and Arizona load. Acquirers positioned along these corridors carry asymmetric upside.
Recent western heat waves have repriced the value of intra-regional transmission, capacity diversity, and storage duration. WRAP binding compliance will accelerate that repricing.
APS, NV Energy, and PGE territories are absorbing hyperscale + industrial siting at record speed. Coincident land, water, and transmission access are the differentiated underwriting variables.
Each utility commitment reshapes the western footprint. We track commitments, board votes, and stakeholder filings continuously.
Deliverables
Audience
Engage
Position capital before the WECC cycle moves again.