15KW Complete Offgrid Solar Kit - 15K Sol-Ark Inverter + 20.48KW OMO Stack Lithium Battery +15.4KW Solar with Mounting Rails and Wiring

The 15KW Complete Offgrid Solar Kit - 15K Sol-Ark Inverter + 20.48KW OMO Stack Lithium Battery +15.4KW Solar with Mounting Rails and Wiring  is engineered for complete home energy independence. This system includes a 20.48kWh heated OMO stackable lithium battery bank providing 20,480 watts of usable storage and a 15.4KW bifacial solar array capable of producing approximately 69,300 watts per day based on 4.5 peak sun hours. Perfect for mid-sized homes consuming ~2,000 kWh per month, the system is fully expandable for future solar or battery additions.

Specifications

• Solar Panels: 28 × 550W bifacial mono double-glass (15,400W total)

• Inverter: Sol-Ark 15K-2P-N pure sine wave split-phase inverter, grid-tie compatible, generator input ready

• Battery Bank: 4 × OMO 51.2V 5.12kWh heated stackable lithium batteries with Bluetooth (20.48kWh total)

• Battery Accessories: OMO stackable combiner with LCD display + OMO wheeled base unit

• Roof Mounting Hardware: Complete IronRidge roof mount rail set including L-feet, splices, fasteners & bolts

• Electrical Components: Solar PV combiner box, 500’ 10AWG MC4 solar cabling, 100’ 6AWG AC/generator cable, 20’ 2/0 AC main line, wire gutter boxes, AC combiner kit (multi-Sol-Ark compatible), MC4 crimp tool set, installation manual

Features

• Bifacial Double-Glass Solar Modules: Up to 25% rear-side energy gain; superior performance in low-light conditions

• Extreme Durability: 5400Pa snow load, 2400Pa wind load, 30-year power warranty

• Expandable System: Add more OMO batteries or extend solar array at any time

• Household Support: Runs wells, washers, fans, TVs, lighting, refrigerators, freezers, small AC units & common electronics

• Roof-Mount Ready: Includes all IronRidge brackets, fasteners & supports for secure rooftop installation

Maintenance

• Daily: Check inverter status and ensure solar panels remain clear of debris

• Weekly: Monitor battery performance and inspect rooftop hardware for any shifting or obstruction

• Annually: Clean panels, tighten mounting hardware, and perform a system-wide electrical inspection

Inverter Specifications

• Output: 120/240V split phase pure sine wave

• Battery Compatibility: Operates with or without batteries; supports 48V lithium or lead-acid

• Output Rating: 9kW continuous, 16kW surge (10 seconds)

• MPPT Charging: Built-in MPPT controller with 3 independent inputs

• Control & Connectivity: LCD touchscreen, Wi-Fi enabled, generator support, transformerless design

• Efficiency & Durability: 97.5% efficiency; NEMA 3R outdoor-rated; 10-year Sol-Ark warranty

• Advanced Functions: Parallel stacking up to 8 units; 4ms transfer time between batteries and grid