Boundary is a 1,039.8MW hydro power project. It is located on Pend Oreille river/basin in Washington, the US. According to GlobalData, who tracks and profiles over 170,000 power plants worldwide, the project is currently active. It has been developed in a single phase. Post completion of construction, the project got commissioned in 1967. Buy the profile here.


The project is developed and owned by Seattle City Light.

Boundary is a reservoir based project. The hydro reservoir capacity is 108.439 million cubic meter. The gross head of the project is 80.162m. Boundary underwent through rehabilitation & modernization during 1997-2006.

The hydro power project consists of 2 turbines, each with 158.4MW nameplate capacity.

The hydro power project consists of 2 turbines, each with 161.5MW nameplate capacity.

The hydro power project consists of 2 turbines, each with 200MW nameplate capacity.

Development status

The project got commissioned in 1967.

Contractors involved

Toshiba Energy Systems and Solutions supplied 2 electric generators for the project. The generator capacity is 210 MVA.

For more details on Boundary, buy the profile here.

About Seattle City Light

Seattle City Light (Seattle City) is an electric utility that offers electricity distribution and related energy services. It provides services such as streetlight repair services, payment arrangements, bill payment, utility discount programs, meter route improvement, power lines service, vegetation management, power restoration services, and budget billing, among others. Seattle City operates through its transmission lines and electric substations. Seattle City operates solar and hydro electric projects. The utility provides electrical power to commercial, re-modelers, developers, residential, industrial, and business customers in Washington, the US. Seattle City is headquartered in Seattle, Washington, the US.

This content was updated on 20 July 2023

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GlobalData, the leading provider of industry intelligence, provided the underlying research used to produce this article.

This information is drawn from GlobalData’s Power Intelligence Center, which provides detailed profiles of over 170,000 active, planned and under construction power plants worldwide from announcement through to operation across all technologies and countries worldwide.