Overview
Pierre Substation, operated by the Western Area Power Administration, is a 115 kV electrical substation in South Dakota, United States. It plays a key role in regional grid stability.
Pierre Substation is an operational electrical substation located in South Dakota, United States, managed by the Western Area Power Administration (WAPA). As a 115 kV facility, it operates at a transmission-level voltage, contributing to the bulk power system that serves the central United States. The substation is part of WAPA's extensive network, which delivers hydroelectric power from federal dams to utilities and communities. The substation's technical specifications indicate a voltage of 115 kV, a common transmission voltage in the US, facilitating efficient long-distance power transfer. Operating under the regulatory oversight of the Federal Energy Regulatory Commission (FERC) and subject to North American Electric Reliability Corporation (NERC) reliability standards, Pierre Substation adheres to strict grid security and operational protocols. Its location in South Dakota places it within the Western Interconnection, one of the two major alternating-current power grids in North America. Environmentally, Pierre Substation supports the integration of renewable energy sources, such as wind power, which is abundant in the Great Plains region. By maintaining grid stability and enabling power distribution, the substation underpins the region's energy infrastructure, serving both urban and rural communities. Its role is critical for ensuring reliable electricity supply and supporting economic activities in the area.
Environmental context
Located in the Great Plains of South Dakota, Pierre Substation operates in a region characterized by vast grasslands and a semi-arid climate. The area is a hub for wind energy development, and the substation's 115 kV voltage level is well-suited for connecting wind farms to the transmission grid. Its rural location minimizes direct environmental impact, while its role in grid stability supports the integration of variable renewable energy sources, contributing to reduced greenhouse gas emissions.
Frequently asked questions
Pierre Substation is located in South Dakota, United States, near the city of Pierre. Its coordinates are approximately 44.379° N, -100.363° W.
Pierre Substation operates at a voltage of 115 kV (115,000 volts), which is a standard transmission voltage in the United States.
Pierre Substation is operated by the Western Area Power Administration (WAPA), a federal agency that markets and transmits hydroelectric power from U.S. dams.
As part of the U.S. bulk power system, Pierre Substation must comply with NERC reliability standards and FERC regulations, ensuring grid stability and security.
A 115 kV substation steps down transmission voltage for distribution or interconnects transmission lines, facilitating efficient power transfer and grid reliability.