20KW Complete Offgrid Solar Kit - 2x 32kWh OMO 48V Freedom Series Lithium Battery + 2x 15K Sol-Ark Inverter +19.8KW Solar with Roof Mount and Wiring

The 20KW Complete Offgrid Solar Kit - 2x 32kWh OMO 48V Freedom Series Lithium Battery + 2x 15K Sol-Ark Inverter +19.8KW Solar with Roof Mount and Wiring is designed for those who demand the best. This professional-grade system includes a 19.8KW bifacial solar array, two Sol-Ark 15K hybrid/off-grid inverters, and two OMO 32kWh heated lithium batteries, delivering a total of 64,000 watts of usable stored energy. Producing approximately 89,100 watts per day (based on 4.5 sun hours), this configuration is ideal for larger homes using around 2,670 kWh per month.

This system is engineered for scalability—allowing future expansion of both solar panels and batteries. It comes complete with a full Iron Ridge roof-mount kit, all wiring, and all necessary hardware for a high-performance off-grid installation.

Specifications

• Solar Array: 36× 550W bifacial mono solar panels (19,800W array)

• Inverters: 2× Sol-Ark 15K Hybrid/Off-Grid 48V with built-in MPPT charge controllers

• Battery Bank: 2× OMO 32kWh 48V Freedom Series Heated Lithium Batteries (Bluetooth + LCD)

• Roof Mount System: Complete Iron Ridge rail kit (rails, splices, legs, fasteners & bolts)

• Cabling & Hardware: 2× PV combiner boxes, 1× AC Sol-Ark combiner kit, Anderson battery cable set, 500' 10AWG PV wire, 100' 6AWG AC/gen cable, 20' 4/0 AC main line, 2× gutter boxes, MC4 crimp kit, Installation manual

Features

• Bifacial Double-Glass Panels: Up to 25% rear-side energy gain and superior performance in weak light

• High Durability: Rated for 5400 PA snow load / 2400 PA wind load; 30-year power warranty

• Large Storage Capacity: 64kWh total lithium storage with heating, Bluetooth monitoring, and LCD readout

• Sol-Ark Technology: 120/240V split-phase output, 3× MPPT inputs, generator support, touchscreen LCD, WiFi connectivity

• High Efficiency: 97.5% inverter efficiency, DC transformerless, NEMA 3R outdoor-rated enclosure, 10-year warranty

• Expandable System: Supports additional solar and battery expansion; parallel stacking up to 8 Sol-Ark units

Maintenance

• Daily: Monitor inverter display/app and ensure panels remain clear of dust and shading

• Weekly: Inspect wiring, roof-mount hardware, and combiner boxes; verify system production levels

• Annually: Perform comprehensive inspection of rails, grounding, connectors, and update inverter firmware

Warranty

• Solar Panels: 30-year power warranty

• Sol-Ark Inverters: 10-year manufacturer warranty

Battery Specification Sheet