Overview
Dave Johnston Substation is an operational electrical substation in Wyoming, United States, owned by Rocky Mountain Power. It operates at 230 kV and 115 kV voltage levels, serving the regional grid.
Dave Johnston Substation is an operational electrical substation located in Wyoming, United States. Owned by Rocky Mountain Power, a subsidiary of PacifiCorp, the facility plays a key role in the regional transmission network. The substation is situated near the Dave Johnston Power Plant, a coal-fired generation facility, and supports the integration of power into the grid. The substation operates at dual voltage levels of 230 kV and 115 kV, indicating its role in both high-voltage transmission and sub-transmission. As part of the Western Interconnection, the facility is subject to North American Electric Reliability Corporation (NERC) reliability standards and Federal Energy Regulatory Commission (FERC) regulation. The voltage levels suggest it is a medium-to-large scale substation typical of regional power distribution in the Rocky Mountain area. Environmentally, the substation's location in Wyoming places it in a region with significant wind energy potential and coal generation. The facility's operation supports grid stability for local communities and industrial customers. Its dual voltage capability allows for efficient power flow management, contributing to the reliability of the electrical infrastructure in the western United States.
Environmental context
The substation is located in a semi-arid region of Wyoming, where energy infrastructure is critical for both coal-fired and renewable generation. The area experiences cold winters and dry summers, which can affect equipment performance and maintenance schedules. The facility's voltage levels indicate its role in connecting generation sources to load centers, with potential impacts on local wildlife and land use typical of linear infrastructure projects.
Frequently asked questions
Dave Johnston Substation is located in Wyoming, United States, near the Dave Johnston Power Plant. Its coordinates are approximately 42.837146 N, -105.778541 W.
Dave Johnston Substation operates at 230 kV and 115 kV, making it a dual-voltage substation that handles both high-voltage transmission and sub-transmission.
Dave Johnston Substation is owned by Rocky Mountain Power, a utility company serving parts of Idaho, Utah, and Wyoming.
As part of the US electrical grid, Dave Johnston Substation must comply with NERC reliability standards and FERC regulations for transmission-level assets.
A 230/115 kV substation steps down high-voltage transmission power for distribution to local networks, ensuring reliable electricity supply to industrial and residential customers.