12KW Complete Offgrid Solar Kit + EG4 FlexBOSS21 + 2x 14.3KW 48V EG4 Lithium Indoor Wall Battery+ 13.2KW Solar with Roof Mounting Rails and Wiring

The 12KW Complete Offgrid Solar Kit + EG4 FlexBOSS21 + 2x 14.3KW 48V EG4 Lithium Indoor Wall Battery+ 13.2KW Solar with Roof Mounting Rails and Wiring provides a powerful, expandable solution for mid-sized off-grid homes. Featuring the EG4 FlexBOSS21 hybrid inverter/charger, a 28,600W lithium battery bank, and a 13.2KW high-efficiency bifacial solar array, the system generates approximately 59,400 watts per day based on 4.5 sun hours. Ideal for homes consuming around 1700kWh/month, this kit is built for long-term scalability with the ability to add more panels or batteries at any time.

Specifications

• Solar Panels: 24× 550W Bifacial Double-Glass Panels (13,200W Array)

• Inverter: 1× EG4 FlexBOSS21 — 48V Split-Phase Hybrid Inverter/Charger

• Batteries: 2× 14.3KW EG4 48V Indoor Wall Lithium Batteries (28.6KW Total)

• Mounting Hardware: Iron Ridge Roof Mount Rails, Splices, Legs, Fasteners & Bolts

• Electrical Components: Solar Combiner Box, Gutter Box, 500' PV Direct Burial Wire

• Cabling: Anderson Plug Battery Cable Set, 100' AC Output/Input/Generator Cabling (6 AWG)

• Tools & Guides: MC4 Crimp Kit, Installation Manual

• Weather Rating: 5400 PA snow load, 2400 PA wind load

Features

• FlexBOSS21 Hybrid Inverter: Split-phase 120/240V output with hybrid charging capability

• Bifacial Technology: Up to 25% rear-side energy gain for higher output

• Roof Mount Ready: Full Iron Ridge rail/roof hardware included

• Expandable: Supports additional panels and batteries anytime

• Durable Build: Double-glass panel construction with 30-year warranty

• Complete Wiring Included: PV, AC, and battery cables ready for installation

Maintenance

• DIY Friendly: Installable with basic wiring knowledge; electrician recommended if inexperienced

• Weekly: Inspect connections, inverter display, and wiring runs

• Annually: Clean panels and check roof mount hardware for tightness

System Guidance

• Best For: Small cabins, RVs, garages, pole barns, and full off-grid homes

• Suitable Appliances: Well pumps, washers, fans, TVs, lighting, refrigerators, freezers, electronics, small AC systems

• Energy Usage Reference: Average U.S. home uses 877kWh/month — system is expandable as needed

• Production Estimate: Based on ~4.5 peak sun hours (Midwest average)

• Installation Difficulty: Racking/roof mounting typically requires the most labor; electrical is straightforward

Warranty

• Solar Panels: 30-Year Power Warranty

• Batteries: EG4 Manufacturer Warranty

• Inverter: FlexBOSS21 Manufacturer Warranty