12KW Complete Offgrid Solar Kit + EG4 18kPV + 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 18kPV + 2x 14.3KW 48V EG4 Lithium Indoor Wall Battery + 13.2KW Solar with Roof Mounting Rails and Wiring is a powerful, roof-mounted off-grid solution ideal for mid-sized homes. With 28,600 watts of usable lithium storage and approximately 59,400 watts of daily solar production (based on 4.5 peak sun hours), this kit is designed for properties using around 1,700 kWh per month. Fully scalable for future panel or battery expansion, it provides a long-term, flexible pathway to true energy independence.

Specifications

• Solar Panels: 24 × 550W bifacial double-glass panels (13,200W array)

• Inverter: 1 × EG4 18kPV 48V split-phase hybrid inverter/charger

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

• Mounting System: Complete Iron Ridge roof mounting rails, splices, legs, fasteners, and bolts

• Combiner & Protection: Solar combiner box and gutter box

• DC Wiring: 1 × 500' PV direct-burial solar wire (array/combiner to charge controller)

• AC Wiring: 1 × 100' spool 6 AWG AC output/input/generator cabling

• Battery Cabling: 1 × Anderson plug battery cable set for inverter/battery connection

• Tools Included: MC4 crimp kit

• Documentation: Full installation manual

• System Capacity: ~59,400W of solar production per day (4.5 peak sun hours), suitable for ~1,700 kWh/month usage

• Panel Ratings: 5,400 Pa snow load / 2,400 Pa wind load, 30-year power warranty

• Bifacial Technology: Up to 25% additional rear-side energy harvest for improved low-light performance

Features

• Off-Grid Ready: Complete roof-mounted kit for a fully off-grid mid-sized home

• High-Capacity Lithium Storage: 28.6KW of usable EG4 lithium energy for reliable nighttime and backup power

• Hybrid Inverter: EG4 18kPV supports 48V split-phase operation with inverter/charger functionality

• Expandable Design: System can be scaled up with additional panels or batteries as energy needs grow

• Appliance Support: Suitable for small cabin, RV, garage, or polebarn setups and can run wells, washing machines, fans, TVs, lights, refrigerators, freezers, smaller AC systems, and everyday electronics

• Usage Benchmark: Designed with typical U.S. household consumption (~877 kWh/month) in mind; kits are configurable to meet higher or lower usage

• Regional Performance: Daily solar output is based on ~4.5 peak sun hours (less in the Northeast, more in the Southwest), providing a clear framework for estimating energy production

• DIY-Friendly: Intended for homeowners with basic wiring knowledge; local electricians can assist if needed, especially with roof racking and final connections

• Robust Construction: Double-glass bifacial panels and Iron Ridge racking are engineered for demanding weather conditions

Maintenance

• Daily: Glance at the inverter and battery indicators to confirm normal operation and check for system alerts

• Weekly: Visually inspect the roof-mounted panels for dirt, snow, or debris that may reduce output; clean as required following manufacturer guidelines

• Monthly: Inspect exposed wiring, conduit, roof mounting hardware, and combiner/gutter boxes for signs of wear or damage

• Annually: Perform a full system audit, including rail and roof attachment integrity, inverter performance logs, and battery health checks; tighten any loose connections and verify grounding

Warranty

• Solar Panels: 30-year performance warranty on bifacial modules

• EG4 Lithium Batteries: Manufacturer-backed warranty per EG4 terms for indoor wall batteries

• EG4 18kPV Inverter: Warranty coverage as specified by EG4 for the hybrid inverter/charger

• Mounting Hardware: Structural and finish warranty from Iron Ridge on roof mounting components