Overview
System type: Off-grid, battery-based PV and wind‑electric
Location: Paris, Arkansas
Solar resource: 4.5 average daily peak sun-hours
PV production: 360 AC KWH per month
Wind resource: 10 mph (4.5 m/s) average wind speed
Wind production: 160 AC KWH per month
Photovoltaics
Modules: 22 Sharp, 165 W STC, 34.6 Vmp, 24 VDC nominal
Array: 11 two-module series strings, 3,630 W STC total, 69.2 Vmp, 48 VDC nominal
Array installation: Homebuilt trackers
Wind Turbine & Tower
Turbine: African Wind Power (AWP) 3.6
Rotor diameter: 11.8 feet (3.6 m)
Rated energy output: 192 DC KWH per month at 12 mph (5.4 m/s)
Rated peak power output: 1,000 W at 22 mph (9.8 m/s)
Tower: 80-foot guyed, tilt-up, homebuilt
Energy Storage
Batteries: 24 Surrette S-530, 6 VDC nominal, 400 AH at 20-hour rate, flooded lead-acid
Battery bank: 48 VDC nominal, 1,200 AH total
Balance of System
PV charge controller: OutBack MX60, 60 A, MPPT, 48 VDC nominal input voltage, 48 VDC nominal output
Wind turbine charge controller: AWP controller with diversion load
Inverters: Two OutBack VFX3648, 48 VDC nominal input, 120/240 VAC output
System performance metering: TriMetric battery monitor
