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

The 15KW Complete Offgrid Solar Kit - 15K Sol-Ark Inverter + 20.48KW OMO Stack Lithium Battery +15.4KW Solar with Ground Mount and Wiring  is a complete, scalable solution for full off-grid living. It pairs a 20.48kWh heated OMO lithium stack battery bank (≈20,480 Wh usable) with a 15.4KW bifacial solar array, producing about 69,300 watt-hours per day at 4.5 peak sun hours. Built for mid-sized homes using ~2,000 kWh/month, the system is expandable for future panels or batteries.

Specifications

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

• Inverter: Sol-Ark 15K-2P-N split-phase (grid-tie compatible; generator input ready)

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

• Battery Combiner & Base: OMO stackable combiner with LCD readout + OMO wheeled base unit

• Ground Mount: Complete IronRidge ground-mount rails, top caps, rail connectors, fasteners, bolts (uses customer-supplied 3" SCH40 pipe)

• Wiring & BOS: Solar PV combiner box; 500' MC4 10AWG array cabling; 100' 6AWG AC cable; 20' 2/0 AC main line; wire gutter boxes; AC combiner box kit (multi-Sol-Ark); MC4 crimper tool set; installation manual

Features

• Bifacial Double-Glass Panels: Up to 25% rear-side energy gain with excellent low-light performance

• Rugged Build: 5400Pa snow load & 2400Pa wind load; 30-year power output warranty

• Expandable Design: Add additional OMO batteries or extend the solar array as needs grow

• Appliance Coverage: Supports wells, washers, fans, TVs, lighting, refrigerators, freezers, electronics, and smaller AC systems

• Ground-Mount Ready: System engineered around 3" pipe (customer sources pipe locally)

Maintenance

• Daily: Verify inverter status and ensure panels are unobstructed

• Weekly: Review production, inspect visible wiring, confirm proper ventilation for inverter and batteries

• Annually: Clean array, check and re-torque ground-mount hardware, inspect battery/inverter terminations

Inverter Specifications

• Output: 120/240V split phase

• Battery Use: Operates with or without batteries; 48V lithium or lead-acid compatible

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

• Charge Controller: Built-in MPPT with 3 independent inputs

• Controls & I/O: Generator support; LCD touchscreen; Wi-Fi connectivity; DC transformerless

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

• Advanced: Parallel stacking up to 8 units; 4ms transfer time battery↔grid