Overview
Moiliili Substation is an operational electrical substation in Honolulu, Hawaii, owned and operated by Hawaiian Electric Company. It handles voltages of 46 kV and 12.5 kV, serving the local grid.
Moiliili Substation is an operational electrical substation located in the Moiliili neighborhood of Honolulu, Hawaii, United States. Owned and operated by Hawaiian Electric Company, the facility plays a key role in distributing electricity within the urban grid of Oahu. The substation handles primary voltages of 46 kV and 12.5 kV, typical for medium-voltage distribution substations that step down transmission-level power for local use. As part of Hawaiian Electric's infrastructure, Moiliili 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 likely employs conventional switchgear and protection systems, with automation potentially aligned with IEEE standards. Its urban location in Honolulu subjects it to high demand and the need for robust grid stability, especially given Hawaii's isolated island grid. The substation's environmental context includes its location in a densely populated urban area, where it supports residential and commercial loads. Its operation is critical for maintaining grid reliability in Honolulu, and it may be subject to resilience planning against natural hazards such as hurricanes and volcanic activity. The facility's role in the local energy transition is significant as Hawaii pursues 100% renewable energy goals.
Environmental context
Moiliili Substation is situated in an urban residential and commercial area of Honolulu, Hawaii, on the island of Oahu. The local environment is characterized by a tropical climate with high humidity and occasional severe weather events, including hurricanes and heavy rainfall. The substation's infrastructure must be resilient to these conditions, and its operation is integrated with the island's isolated grid, which relies on a mix of fossil fuels and renewable energy sources. The facility's location in a densely populated area requires careful management of electromagnetic fields and noise, while its role in distributing power supports the community's energy needs.
Frequently asked questions
Moiliili Substation is located in the Moiliili neighborhood of Honolulu, Hawaii, United States, at coordinates 21.291782 N, -157.825496 W.
Moiliili Substation handles voltages of 46 kV and 12.5 kV, typical for a medium-voltage distribution substation.
Moiliili Substation is owned and operated by Hawaiian Electric Company, the primary electric utility serving Oahu, Hawaii.
As part of the U.S. electrical grid, Moiliili Substation operates under FERC regulation and must comply with NERC reliability standards for grid stability and security.
Moiliili Substation steps down transmission-level power to distribution voltages, supplying electricity to residential and commercial customers in the Moiliili area of Honolulu.