15KW Complete Offgrid Solar Kit + EG4 FlexBOSS21 + 2x 14.3KW 48V EG4 Lithium Indoor Wall Battery + 15.4KW Solar with Ground Mount and Wiring

The 15KW Complete Offgrid Solar Kit + EG4 FlexBOSS21 + 2x 14.3KW 48V EG4 Lithium Indoor Wall Battery + 15.4KW Solar with Ground Mount and Wiring is a powerful and scalable solution for mid-sized off-grid homes. This system includes 28,600W of usable lithium battery storage and a 15,400W bifacial solar array capable of producing approximately 69,300W per day under 4.5 hours of peak sun. Built for growth and long-term reliability, this package is ideal for properties that consume around 2,000 kWh per month and want a dependable off-grid power solution.

Specifications

• Solar Panels: 28× 550W Bifacial Double-Glass Mono Solar Panels (15,400W array)

• Inverter: 1× EG4 FlexBOSS21 48V split-phase hybrid inverter/charger

• Batteries: 2× 14.3KW 48V EG4 Lithium Indoor Wall Batteries (28,600W usable energy)

• Mounting System: Complete Iron Ridge Ground Mount Kit (customer supplies 3” sch 40 pipe)

• Wiring: 500' PV Direct Burial Wire + 100' AC Output/Generator Cable (6 AWG)

• Combiner & Protection: 1× Solar Combiner Box + 1× Gutter Box

• Accessories: Anderson Plug Battery Cable Set, MC4 Crimp Kit, Installation Manual

Features

• Bifacial Solar Technology: Up to 25% additional rear-side energy capture with double-glass construction

• High Durability: 5400 PA snow load & 2400 PA wind load rating for harsh climates

• Daily Output: Generates ~69,300W/day under typical Midwest sun conditions

• Wide Appliance Compatibility: Supports wells, washers, refrigerators, freezers, electronics, lights, fans, and small AC systems

• Expandable System: Add more batteries or solar panels anytime

• Suitable For: Small cabins, garages, RV setups, pole barns, and mid-sized homes

Maintenance

• Daily: Inspect inverter display and keep panels free from heavy debris

• Weekly: Check wiring connections and ensure battery status is normal

• Annually: Perform full system inspection, tighten racking hardware, and verify output performance

Warranty

• Solar Panels: 30-year power output warranty

• Electronics & Batteries: Covered by manufacturer warranty (see documentation)