Tuolumne Substation - 115 kV Electrical Substation in California, United States

Tuolumne Substation is an operational electrical substation located in California, United States, owned and operated by the Turlock Irrigation District. The facility operates at a voltage of 115 kV, placing it in the medium-to-high voltage range typical for distribution and sub-transmission substations serving agricultural and urban loads. The substation operates under the regulatory framework of the North American Electric Reliability Corporation (NERC) and the Federal Energy Regulatory Commission (FERC), which set reliability standards for bulk power systems. As part of the Turlock Irrigation District's network, it supports local electricity distribution in California's Central Valley, a region with significant agricultural and growing residential demand. The facility's operational status and voltage level indicate its importance for local grid reliability. Substations like Tuolumne are critical for stepping down transmission voltages for distribution to end users, contributing to the resilience of the regional power supply. Its location in an irrigation district highlights its role in supporting both agricultural and community energy needs.

The substation is situated in California's Central Valley, a region with hot, dry summers and a heavy reliance on irrigation for agriculture. Electrical infrastructure here must withstand high temperatures and occasional wildfire risks. The 115 kV voltage level suggests the substation serves a mix of rural and suburban loads, with potential environmental considerations including vegetation management to reduce fire hazards and compliance with state grid reliability standards.