Overview
Wailuku Hydroelectric Substation is an operational substation in Hawaii, owned and operated by Hawaiian Electric Company. It operates at 69 kV, supporting the island's grid stability.
Wailuku Hydroelectric Substation is an operational electrical substation located in Hawaii, United States. Owned and operated by Hawaiian Electric Company, the facility serves as a critical node in the local power grid, stepping down voltage from hydroelectric generation for distribution. With a voltage level of 69 kV, it is classified as a medium-voltage substation, typical for regional transmission and distribution networks in the state. The 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. As part of the Hawaiian Electric system, it integrates renewable hydroelectric power into the grid, supporting the state's transition toward clean energy. The facility's design likely incorporates modern switchgear and automation to ensure reliable operation in Hawaii's unique island environment. Environmentally, the substation plays a key role in connecting hydroelectric generation to consumers, reducing reliance on fossil fuels. Its location in a volcanic region with high rainfall supports consistent hydroelectric output. The facility's operational status and integration with Hawaiian Electric's grid contribute to the resilience and sustainability of the island's electrical infrastructure.
Environmental context
The substation is situated in a tropical climate with heavy rainfall, which supports consistent hydroelectric generation. Its voltage level of 69 kV is critical for local grid stability, connecting renewable energy sources to residential and commercial consumers. The facility's urban-rural interface location minimizes transmission losses while supporting the state's clean energy goals.
Frequently asked questions
Wailuku Hydroelectric Substation is located in Hawaii, United States, at coordinates 19.711787, -155.147520. It is part of the Hawaiian Electric Company's grid infrastructure.
Wailuku Hydroelectric Substation operates at 69 kV (69,000 volts), which is a medium-voltage level typical for substations connecting hydroelectric generation to the distribution network.
The substation is owned and operated by Hawaiian Electric Company, the primary electric utility serving the island of Hawaii.
As part of the U.S. electrical grid, the substation must comply with NERC reliability standards and FERC regulations for transmission-level assets. It also follows ISO/IEC 61850 standards for substation automation.
By connecting hydroelectric generation to the grid, the substation facilitates the integration of renewable energy, helping Hawaii achieve its target of 100% renewable electricity by 2045.