Overview
Dumbarton Substation is an operational electrical substation in California, United States, owned and operated by Pacific Gas and Electric Company. It operates at a voltage of 115 kV, serving as a key node in the regional transmission grid.
Dumbarton Substation is an operational electrical substation located in California, United States. Owned and operated by Pacific Gas and Electric Company (PG&E), the facility operates at a voltage of 115 kV, classifying it as a medium-voltage substation within the broader transmission network. The substation plays a role in stepping down high-voltage electricity for distribution to local communities and industrial users. As part of PG&E's infrastructure, Dumbarton Substation operates under the regulatory oversight of the Federal Energy Regulatory Commission (FERC) and adheres to North American Electric Reliability Corporation (NERC) reliability standards. The 115 kV voltage level is typical for subtransmission systems that connect bulk power transmission to distribution networks. The substation likely employs conventional air-insulated switchgear (AIS) or gas-insulated switchgear (GIS) technology, common for this voltage class in the United States. The substation's location in California places it within a region with high electricity demand and a diverse energy mix, including renewable sources. Its operational status ensures continued grid stability and power delivery to surrounding areas. The facility contributes to the resilience of the local electrical infrastructure, supporting both residential and commercial customers.
Environmental context
The substation is situated in an urbanized area of California, where electrical infrastructure must balance reliability with environmental considerations. The 115 kV voltage level indicates a role in local power distribution, potentially serving residential and commercial zones. The facility's operation aligns with California's stringent environmental regulations, including those governing electromagnetic fields and equipment insulation. The surrounding region's Mediterranean climate necessitates robust equipment design to withstand seasonal temperature variations and occasional wildfire risks.
Frequently asked questions
Dumbarton Substation is located in California, United States, at coordinates 37.557070, -122.057883. It is owned and operated by Pacific Gas and Electric Company (PG&E).
Dumbarton Substation operates at a voltage of 115 kV, which is a medium-voltage level commonly used for subtransmission and distribution in the United States.
Dumbarton Substation is owned and operated by Pacific Gas and Electric Company (PG&E), a major utility serving northern and central California.
As part of the US electrical grid, Dumbarton Substation must comply with NERC reliability standards and FERC regulations for transmission-level assets. PG&E also adheres to California state utility regulations.
A 115 kV substation typically steps down high-voltage transmission power to lower voltages for distribution to homes and businesses. It also provides switching and protection functions to maintain grid stability.