20KW Complete Offgrid Solar Kit - 3x 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 - 3x 32kWh OMO 48V Freedom Series Lithium Battery + 2x 15K Sol-Ark Inverter +19.8KW Solar with Roof Mount and Wiring is engineered for full home off-grid independence. Equipped with a powerful 19.8KW bifacial solar array, dual Sol-Ark 15K inverters, and an impressive 3× 32kWh OMO Lithium Battery Bank (96kWh usable), this system delivers exceptional energy reliability for larger homes using around 2,670 kWh per month. Designed for long-term scalability, it supports future expansion of both solar panels and battery storage.

Specifications

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

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

• Battery Bank: 3× OMO 32kWh Freedom Series heated lithium batteries with Bluetooth + LCD monitoring (96kWh total)

• Roof Mount System: Complete Iron Ridge rail kit with splices, legs, fasteners, and hardware

• Electrical Components: 2× solar combiner boxes, Sol-Ark AC combiner kit, Anderson battery cable set, 500' 10AWG PV wire, 100' 6AWG AC/gen cable, 20' 4/0 AC main line, MC4 crimp kit, 2× gutter boxes, installation manual

Features

• Bifacial Solar Panels: Double-glass panels producing up to 25% additional rear-side energy with superior low-light performance

• High Durability: 5400 PA snow load and 2400 PA wind load ratings with a 30-year performance warranty

• Large Storage Capacity: 96kWh heated lithium battery bank for extended autonomy and resilient off-grid operation

• Advanced Inverter Technology: 120/240V split phase, generator support, 3× MPPT inputs, touchscreen display, WiFi connectivity

• High Efficiency: 97.5% inverter efficiency with NEMA 3R outdoor-rated enclosure and DC transformerless design

• Scalable System: Supports parallel stacking of up to 8 inverters and expandable solar/battery capacity

Maintenance

• Daily: Verify system output and ensure panels remain clean

• Weekly: Inspect cabling, roof mount hardware, and inverter performance

• Annually: Perform full connection checks, clean panels thoroughly, and apply firmware updates

Warranty

• Solar Panels: 30-year power warranty

• Sol-Ark Inverters: 10-year warranty

Battery Specification Sheet