Upgrades to existing HECO substations, including feeders, breakers, and 46 kV underground electrical distribution backbone to accommodate Joint Bas…
Office of NEPA Policy and Compliance
May 27, 2026
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Upgrades to existing HECO substations, including feeders, breakers, and 46 kV underground electrical distribution backbone to accommodate Joint Base Pearl Harbor-Hickam islanding and electrical redundancy in emergency situations.