15KW Complete Offgrid Solar Kit + EG4 FlexBOSS21 + 32KW OMO 48V Freedom Series Lithium Battery + 15.4KW Solar with Ground Mount and Wiring

The 15KW Complete Offgrid Solar Kit + EG4 FlexBOSS21 + 32KW OMO 48V Freedom Series Lithium Battery + 15.4KW Solar with Ground Mount and Wiring is engineered for reliable whole-home off-grid power. Featuring a 15.4KW bifacial solar array, the advanced EG4 FlexBOSS21 48V split-phase hybrid inverter/charger, and a 32KW OMO 48V Freedom Series Heated Lithium Battery with Bluetooth and an LCD readout, this system delivers powerful performance and long-term reliability.

With approximately 69,300 watts per day of solar production at 4.5 peak sun hours, this kit is ideal for mid-sized homes consuming ~2,000kWh per month. It is fully expandable, allowing additional solar panels or battery storage to be added at any time.

Specifications

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

• Inverter/Charger: EG4 FlexBOSS21 — versatile 48V split-phase hybrid inverter/charger

• Battery Storage: 32KW OMO 48V Freedom Series Heated Lithium Battery with Bluetooth & LCD Display

• Ground Mount System: IronRidge rails, top caps, connectors, fasteners, and bolts (3" Schedule 40 pipe sourced locally)

• Balance of System: Solar combiner box, gutter box, Anderson plug battery cable set, 500' 10AWG PV burial wire, 100' 6AWG AC cabling, MC4 crimp kit, installation manual

Features

• Bifacial Solar Technology: Generates up to 25% additional rear-side energy; stronger performance in low-light conditions

• Extreme Weather Durability: 5400Pa snow load & 2400Pa wind load with a 30-year power warranty

• Ideal Applications: Great for small cabins, RVs, garages, pole barns, and full residential off-grid homes

• Appliance Support: Runs wells, washers, fans, TVs, lights, refrigerators, freezers, electronics, and small AC systems

• Expandable System Design: Built for easy expansion of both solar panels and battery capacity

• DIY-Friendly: Basic wiring knowledge is sufficient for installation; ground-mount racking requires the most labor

Maintenance

• Daily: Monitor inverter and battery status; ensure panels remain clean and unobstructed

• Weekly: Inspect wiring, mounting hardware, and verify expected solar production

• Annually: Deep clean panels, torque-check mounting hardware, and inspect all electrical connections

Warranty

• Solar Panels: 30-year power output warranty

• Battery & Inverter: Covered under OMO & EG4 manufacturer warranties