Overview
Kahaluu Substation is an operational electrical substation in Hawaii, United States, owned and operated by Hawaiian Electric Company. It operates at voltage levels of 69 kV and 12.47 kV.
Kahaluu Substation is an operational electrical substation located in Hawaii, United States. Owned and operated by Hawaiian Electric Company, the facility plays a key role in the state's electrical infrastructure, serving the local grid with voltage levels of 69 kV and 12.47 kV. As part of the Hawaiian Electric system, the substation operates under U.S. regulatory frameworks including NERC reliability standards and FERC oversight for transmission-level assets. The 69 kV voltage level indicates it functions as a subtransmission or distribution substation, typical for island grids where space and load density influence design. The substation supports grid stability in the Hawaii region, which relies on a mix of renewable and fossil fuel generation. Its operational status ensures continued power distribution to local communities, contributing to the resilience of the island's electrical network.
Environmental context
Located in a tropical island environment, the substation must withstand high humidity, salt spray, and occasional volcanic haze (vog). These conditions require robust insulation and maintenance practices to prevent corrosion and flashovers. The facility's coastal proximity also necessitates careful siting to avoid storm surge impacts.
Frequently asked questions
Kahaluu Substation is located in Hawaii, United States, at coordinates 19.582266, -155.954799.
Kahaluu Substation operates at voltage levels of 69 kV and 12.47 kV, typical for subtransmission and distribution substations.
Kahaluu Substation is owned and operated by Hawaiian Electric Company, the primary electric utility serving Hawaii.
Substations in the United States are subject to NERC reliability standards for grid stability and FERC regulations for transmission assets, along with state-level utility commission oversight.
As part of Hawaiian Electric's network, the substation helps distribute power from generation sources to local communities, supporting grid reliability in an island setting.