Net Zero Energy F-22 System Maintenance Hangar

The Net Zero Energy F-22 System Maintenance Hangar is a three part project showcasing energy efficiency retrofit, solar energy generation and advanced technology energy storage to yield a net zero facility at the Hawaii National Guard’s 154th Wing’s F-22 Fuel System Maintenance Hangar.

Energy Generation Showcase of Ground Mounted Solar PV Array
	• Solar PV Array • DC rated output : 136.92kW • AC rated output: 60.00kW • Comprised of two different arrangements of the same module type • Dual Axis Tracking PV array: 12 SunPower modules – 2.94kW (245W each) • Fix mount PV array: 308 SunPower modules (345W each)– 133.98kW • Two Ideal Power inverters (30kW each)
Battery Energy Storage System (BESS) showcase of HiVE, lithium iron BESS technology
	• Energy Capacity: .25MWh (250kWh) • Lithium iron phosphate battery technology and battery management and supervisory control systems • Custom built (made with prefabricated concrete) vault • BESS & PV site is fenced and graveled to meet HIANG requirements for site condition
Energy Efficiency Retrofit Hanger
	• Energy Efficiency Measure for Bldg 3407 • LED lighting and advanced controls installation • Variable Air Volume (VAV) System • Solar Water Heating