Overview
Hauula Substation is an operational electrical substation in Hauula, Hawaii, owned and operated by Hawaiian Electric Company. It handles voltages of 46 kV and 11.5 kV, serving the local grid.
Hauula Substation is an electrical substation located in Hauula, on the island of Oahu, Hawaii, United States. Owned and operated by Hawaiian Electric Company, the facility is part of the state's primary electric utility infrastructure, supporting power distribution for residential and commercial customers in the region. The substation operates at voltage levels of 46 kV and 11.5 kV, typical for sub-transmission and distribution substations. As a key node in Hawaiian Electric's grid, it steps down higher transmission voltages for local distribution. The facility is subject to NERC reliability standards and FERC regulation, ensuring grid stability and compliance with U.S. federal energy policies. Located in a coastal community on Oahu's windward side, Hauula Substation plays a vital role in maintaining reliable electricity supply to the area. Its operation supports the island's energy needs, including integration of renewable sources like solar and wind, which are increasingly important for Hawaii's clean energy goals.
Environmental context
The substation is situated in a tropical coastal environment on Oahu's windward side, where humidity and salt spray from the ocean can affect equipment longevity. The area is prone to tropical storms and heavy rainfall, requiring robust infrastructure design. Hawaiian Electric has been modernizing its grid to accommodate higher shares of renewable energy, which may influence substation upgrades and operational practices.
Frequently asked questions
Hauula Substation is located in Hauula, on the island of Oahu, Hawaii, United States. Its approximate coordinates are 21.612017 N, -157.914667 W.
Hauula Substation operates at voltage levels of 46 kV and 11.5 kV, which are typical for sub-transmission and distribution substations.
Hauula Substation is owned and operated by Hawaiian Electric Company, the primary electric utility serving the island of Oahu.
Substations in the United States are subject to NERC reliability standards for grid stability and FERC regulation for transmission-level assets. Compliance with these frameworks ensures safe and reliable operation.
Hauula Substation plays a key role in distributing electricity to the Hauula area, supporting the integration of renewable energy sources as Hawaii transitions toward its clean energy goals.