Hawaiian Electric Co. says its interconnection facility inside the battery energy storage system warehouse at the Kahuku Wind Farm on Oahu’s North Shore, which was destroyed by fire in August, will cost at least $8 million to rebuild and take about a year to complete.
The 15-megawatt system, which helps stabilize the wind energy output for the grid, houses both HECO’s interconnection facility and Kahuku Wind Farm’s control rooms.
The Hawaiian Electric Industries’ subsidiary also noted in a letter sent last week to the state Public Utilities Commission that the scheduled completion date for its interconnection facility is late 2013. That means that Boston-based First Wind won’t have its Oahu wind farm up and running until the latter part of next year.
Additionally, HECO says that First Wind will replace its battery energy storage system with a D-Var System, a voltage regulation device made by American Superconductor that has proven wind farm experience.