Grand Coulee 115 kV Switchyard - Substation in Washington, USA

Grand Coulee 115 kV Switchyard is a substation located in Washington State, United States, operated by the Bonneville Power Administration (BPA). This facility is part of the extensive electrical infrastructure that supports the Pacific Northwest's power grid, handling voltage at 115 kV. As a substation, it facilitates the transmission and distribution of electricity, stepping down voltage from higher transmission levels for local distribution. The 115 kV level is typical for sub-transmission and distribution networks, serving industrial and residential areas. BPA, a federal agency under the U.S. Department of Energy, oversees this facility, ensuring compliance with NERC reliability standards and FERC regulations. The switchyard is located near the Grand Coulee Dam, one of the largest hydroelectric power plants in the United States. This proximity highlights its role in integrating renewable hydroelectric power into the grid. The facility's operational status ensures continued reliability for the surrounding region, contributing to grid stability and energy security.

The substation is situated in a semi-arid region of eastern Washington, near the Columbia River. The area's electrical infrastructure supports hydroelectric power generation from the Grand Coulee Dam, which has significant environmental implications for river ecosystems and water management. The switchyard's operation is part of a broader network that balances renewable energy integration with grid reliability.