Hawaiian Estate Creates Solar, Battery Microgrid

January 13, 2015 By Linda Hardesty

Aquion Energy ManageAquion Energy has signed an agreement to supply a 1 MWh battery system as part of an off-grid solar microgrid at Bakken Hale on the Island of Hawaii. Bakken Hale is a private estate located along the environmentally sensitive Kona Coast. The Aquion battery system will store energy generated from a large on-site solar installation and will enable Bakken Hale to operate entirely from self-generated solar power.

The off-grid microgrid system will be designed and installed by Renewable Energy Services (RES).

Aquion’s patented Aqueous Hybrid Ion AHI battery systems are designed for both small and large-scale stationary energy storage applications.

The microgrid uses a 176 kW solar array, a 1 MWh Aquion AHI battery system, and a propane-fueled generator used solely for emergency backup. The system is designed to generate 350 MWh per year for 20 years. The batteries will charge from the solar array during daylight hours, and discharge to provide nighttime power on a daily 8-hour charge/16-hour discharge cycle.

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