Merwin

OperatingHydro

Ranked #19 of 75 Hydro plants in WA#140 of 1452 nationally

136 MW Hydro operating in Cowlitz, WA — PacifiCorp - West

EIAGEMWD

136 MW

Nameplate Capacity

Generators

units

Conventional Hydroelectric

Technology

1931

Operating Since

Location

Coordinates

45.9567, -122.5544

County

Cowlitz, WA

Nearby Plants

Yale
Hydro134 MW · 16.9 km
Swift 2
Hydro72 MW · 25.5 km
Swift 1
Hydro240 MW · 29.6 km

Ownership & Operator

Field	EIA	GEM	Wikidata
Operator	PacifiCorp	Pacific	—
Owner(s)	PacifiCorp	Berkshire Hathaway	—
Status	Operating	operating	—

Ownership Chain

CompanyPacifiCorpPower Engineering · 2019-07-24

About

Merwin Dam is a concrete arch gravity-type hydroelectric dam on the Lewis River, in the U.S. state of Washington. It is located on the border between Cowlitz County and Clark County. Its reservoir is called Lake Merwin.

Read more on Wikipedia

Merwin is a 136 MW hydroelectric power plant located in Cowlitz County, Washington. The plant began operating in 1931 and consists of 4 generators utilizing conventional hydroelectric technology. The primary fuel source is water (WAT). PacifiCorp, a subsidiary of Berkshire Hathaway, operates the facility. Merwin ranks 19th out of 23 power plants in Washington and 140th out of 194 nationally. The plant operates within the PacifiCorp - West balancing authority and the Western Electricity Coordinating Council (WECC) NERC region.

In the latest year of reported generation, Merwin produced 467,317 MWh of electricity, achieving a capacity factor of 39.2%. Financial data indicates an installed cost of $1305.66 per kW. The power purchase agreement (PPA) price is $10.78 per MWh. Financial data is sourced from FERC and FERC Electric Quarterly Reports (EQR).

Generated from EIA, GEM, and public data sources