MWPowerPlantFacts
PowerPlantFactsEvidence report · prepared 2 September 2026https://powerplantfacts.com/entity/3917
EIA plant 3917

Silver Creek · Lewis · WA

Mayfield

Operated by City of Tacoma - (WA)

Annual generation576,354 MWhSum of represented EIA-923 rows
Fuel codesWATCodes retained from EIA records
Grid contextCity of Tacoma, Department of Public Utilities, Light DivisionBalancing authority or NERC region

Published location

Where is Mayfield?

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

46.503500, -122.588500

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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
181,130 MWh
261,157 MWh
352,491 MWh
450,706 MWh
551,709 MWh
663,637 MWh
728,012 MWh
831,993 MWh
929,744 MWh
1033,374 MWh
1135,551 MWh
1256,850 MWh

Operating generators

IDTechnologyFuelMWStatus
41Conventional HydroelectricWAT40.5OP
42Conventional HydroelectricWAT40.5OP
43Conventional HydroelectricWAT40.5OP
44Conventional HydroelectricWAT40.5OP

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Identity, technology and limitations
EIA plant ID
3917
Sector
Electric Utility
Water source
Cowlitz River
Data edition
2024-final