15KW Complete Offgrid Solar Kit - 15.36kWh Pytes Lithium Battery + 15K Sol Ark Inverter +15.4KW Solar with Ground Mount Rails and Wiring

The 15KW Complete Offgrid Solar Kit is a powerful, scalable system for whole-home off-grid living. It pairs a 15.4kW bifacial solar array with the Sol-Ark 15K hybrid/off-grid inverter and 15.36kWh of usable lithium storage (three Pytes E-Box 48100 batteries). Expected production is about 69,300 watts per day based on 4.5 peak sun hours, making it a great fit for mid-sized homes using ~2,000 kWh/month. Built for growth, you can add panels or batteries over time.

Specifications

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

• Inverter: Sol-Ark 15K 48V Hybrid/Off-Grid All-in-One (built-in MPPT charge controller)

• Battery Storage: 3 × 5.12kWh Pytes E-Box 48100 lithium batteries (15.36kWh total) + Pytes Forest-RB enclosure (holds up to six batteries)

• Ground Mount: Complete IronRidge rails, top caps, rail connectors, fasteners & bolts (built around 3" SCH40 pipe sourced locally)

• Balance of System: Solar combiner box (expandable), gutter box, battery cable set, 500' 10AWG PV direct-burial wire, 100' 6AWG AC cable, 20' 4/0 AC main line, MC4 crimp kit, installation manual

Features

• Bifacial Panels: Up to ~25% rear-side energy gain; stronger output in cloudy, hazy, or early-morning light

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

• Expandable System: Enclosure supports up to six Pytes batteries; combiner box prepared for future array growth

• Applications: Ideal for complete off-grid homes; runs wells, washers, fans, TVs, lights, refrigerators, freezers, electronics, and smaller AC systems

• Ground-Mount Simplicity: Pre-engineered IronRidge package; customer sources local 3" pipe

Maintenance

• Daily: Monitor inverter and battery status; keep modules clear of debris/shading

• Weekly: Visual check of wiring, combiner, and racking; confirm production aligns with ~4.5 peak sun hours

• Annually: Re-torque racking hardware, clean modules thoroughly, and inspect all electrical connections

Inverter Highlights

• Output: 120/240V split-phase; works with or without batteries (48V lithium or lead-acid)

• Power: 9kW continuous, 16kW surge (10s); 97.5% efficiency; 3× MPPT inputs; generator support

• Interface & Build: LCD touchscreen, Wi-Fi; DC transformerless; NEMA 3R outdoor-rated; 10-year warranty

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