WECC Hydro Market Brief

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Inflow upstream. Basis downstream.
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Last updated: 2026-05-18 06:00 PT
Next refresh: 2026-05-19 06:00 PT
Columbia Basin Water Conditions
SNOTEL · NWRFC · BPA
82 % of normal · Apr–Sep WSF, The Dalles
Latest NWRFC forecast: 96.4 MAF unregulated runoff −4.2 MAF vs prior
Basin SWE % of Median Δ 7d
Mid-Columbia Power Market
ICE EOD · EIA-930
$28.45 /MWh · Mid-C peak DA
Off-peak: $11.20/MWh −18% WoW · Spring runoff compressing prices
BPA Hydro %
81%
Wind %
9%
Thermal %
10%
USACE Project Discharge
USACE NWD
Project Discharge Forebay
CAISO Hydro Snapshot
CAISO OASIS
3,420 MW
Hydro share of CAISO load: 12.4% · SP15 DA: $34.10
Regulatory Pulse
FERC · CAISO

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