MWPowerPlantFacts
PowerPlantFactsEvidence report · prepared 2 September 2026https://powerplantfacts.com/entity/6432
EIA plant 6432

Rockport · Whatcom · WA

Diablo

Operated by City of Seattle - (WA)

Annual generation361,396 MWhSum of represented EIA-923 rows
Fuel codesWATCodes retained from EIA records
Grid contextSeattle City LightBalancing authority or NERC region

Published location

Where is Diablo?

This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.

48.713853, -121.131736

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Map data © OpenStreetMap contributors

Capacity is not generation. Nameplate MW describes equipment; annual MWh describes recorded output. Proposed and retired units are not added to operating capacity.

2024 monthly net generation

MonthNet generation
152,367 MWh
236,868 MWh
347,635 MWh
449,060 MWh
538,234 MWh
634,059 MWh
738,152 MWh
839,853 MWh
912,006 MWh
10-118 MWh
11-194 MWh
1213,474 MWh

Operating generators

IDTechnologyFuelMWStatus
31Conventional HydroelectricWAT90OP
32Conventional HydroelectricWAT90OP
35Conventional HydroelectricWAT1.2OP
36Conventional HydroelectricWAT1.2OP

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Identity, technology and limitations
EIA plant ID
6432
Sector
Electric Utility
Water source
Skagit River
Data edition
2024-final