Alder

OperatingHydro

Ranked #32 of 75 Hydro plants in WA#299 of 1454 nationally

50 MW Hydro operating in Pierce, WA — City of Tacoma, Department of Public Utilities, Light Division

EIAGEMWD

50 MW

Nameplate Capacity

Generators

units

Conventional Hydroelectric

Technology

1945

Operating Since

Location

Coordinates

46.8016, -122.3102

County

Pierce, WA

Nearby Plants

LaGrande
Hydro64 MW · 3.5 km
LRI LFGTE Facility
Landfill Gas4.5 MW · 19.4 km
Skookumchuck Wind Facility
Wind136 MW · 22.9 km

Ownership & Operator

Owner data does not fully agree across sources.

EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.

Field	EIA	GEM	Wikidata
Operator	City of Tacoma - (WA)	City of Tacoma (WA)	—
Owner(s)	City of Tacoma - (WA)	City of Tacoma (WA)	—
Status	Operating	operating	—

Ownership Chain

GEM identifies the owner as City of Tacoma (WA)

This entity is not yet in the GEM ownership database — chain unavailable.

About

Alder Dam is a concrete thick arch dam on the Nisqually River in the U.S. state of Washington. The construction began in 1942 and was completed in 1945. At this time Alder Dam was among the tallest dams in the United States, although this title has since been surpassed. The impounded water behind the dam forms Alder Lake, stretching about 7 miles (11 km) upstream with a capacity of 241,950 acre-feet (0.29844 km3). With 28 miles (45 km) of shoreline, the lake is a popular recreation spot close to Mount Rainier National Park.

Read more on Wikipedia

The Alder hydroelectric plant, located in Pierce County, Washington, has a total capacity of 50 MW. The plant began operating in 1945 and utilizes conventional hydroelectric technology. It is owned and operated by the City of Tacoma, Washington. Alder is ranked as the 32nd largest power plant in Washington out of 75, and 302nd nationally out of 1464 plants.

The plant consists of two generators and uses water as its primary fuel source. In the most recent year with available data, Alder generated 182,852 MWh of electricity, achieving a capacity factor of 41.6%. The balancing authority for the plant is the City of Tacoma, Department of Public Utilities, Light Division, and it operates within the Western Electricity Coordinating Council (WECC) NERC region.

Generated from EIA, GEM, and public data sources