Overview
Koolau Substation is an operational electrical substation in Hawaii, United States, owned and operated by Hawaiian Electric Company. It handles multiple voltage levels including 138 kV, 46 kV, and 12.47 kV.
Koolau Substation is an operational electrical substation located in Hawaii, United States. Owned and operated by Hawaiian Electric Company, the facility plays a critical role in the island's power grid by stepping down transmission voltages for local distribution. The substation handles voltage levels of 138 kV, 46 kV, and 12.47 kV, indicating its function as a major node in the electrical infrastructure. As part of the Hawaiian Electric system, Koolau Substation operates under the regulatory framework of the U.S. Federal Energy Regulatory Commission (FERC) and adheres to North American Electric Reliability Corporation (NERC) reliability standards. The substation's design likely incorporates modern automation and protection systems in line with industry standards such as ISO/IEC 61850 for substation automation. The substation serves the island of Oahu, supporting residential, commercial, and industrial customers in the region. Its strategic location and voltage levels make it essential for maintaining grid stability and reliability, particularly given Hawaii's isolated grid and reliance on renewable energy integration.
Environmental context
Located in Hawaii, Koolau Substation operates in a tropical island environment with unique challenges for electrical infrastructure, including exposure to salt spray, high humidity, and seismic activity. The substation's design must account for these factors to ensure reliability. Its role in integrating renewable energy sources, such as solar and wind, is increasingly important for Hawaii's clean energy goals.
Frequently asked questions
Koolau Substation is located in Hawaii, United States, on the island of Oahu. Its coordinates are approximately 21.38 N, 157.79 W.
Koolau Substation handles multiple voltage levels: 138,000 volts (138 kV), 46,000 volts (46 kV), and 12,470 volts (12.47 kV). These voltages indicate its role in both transmission and distribution.
Koolau Substation is owned and operated by Hawaiian Electric Company, the primary electric utility serving the island of Oahu.
Substations in the United States must comply with NERC reliability standards for grid stability and FERC regulations for interstate transmission. Additionally, substation automation often follows ISO/IEC 61850 standards.
Koolau Substation is critical for distributing electricity across Oahu, supporting grid stability and integrating renewable energy sources like solar and wind, which are key to Hawaii's clean energy transition.