25KW Complete Offgrid Solar Kit - 15K Sol-Ark Inverter + 20.48KW OMO Stack Lithium Battery +26.4KW Solar with Ground Mount  and Wiring

The 25KW Complete Offgrid Solar Kit - 15K Sol-Ark Inverter + 20.48KW OMO Stack Lithium Battery +26.4KW Solar with Ground Mount  and Wiring is a complete high-capacity package designed for full home off-grid independence. This system features a powerful 15K Sol-Ark split-phase inverter, a 20.48 kWh lithium battery bank, and a 26.4 kW bifacial solar array mounted on a ground rack system. Engineered for larger homes and high-demand applications, it produces approximately 118,800 watts per day based on 4.5 hours of peak sun. Fully expandable, this package allows future additions of panels or batteries for long-term energy scalability.

Specifications

• Solar Array: 48 × 550W Bifacial Mono Solar Panels (26,400W total)

• Inverters: 2 × Sol-Ark 15K-2P-N Split-Phase Inverters (Grid-Tie & Generator Compatible)

• Battery Bank: 4 × OMO 51.2V 5.12kWh Heated Stackable Lithium Batteries (20.48 kWh total)

• System Monitoring: OMO Stackable Combiner with LCD Readout + Bluetooth Battery Monitoring

• Ground Mount: Complete IronRidge Ground Mount Rail Set (Customer supplies 3" Sch 40 pipe)

• Cabling: 500’ 10AWG MC4 Solar Cable, 100’ 6AWG AC Cable, 20’ 2/0 Main Line

• Combiner Boxes: 2 × Solar PV Combiner Boxes + AC Combiner Box Kit

• Tools & Accessories: MC4 Crimper Tool Set, Wire Gutter Boxes, Full Installation Manual

Features

• Bifacial Double-Glass Panels: Up to 25% additional rear-side power production, 5400 PA snow load, 2400 PA wind load, 30-year power warranty.

• Sol-Ark 15K Performance: 120/240V split phase, 9kW continuous output (16kW surge), 3 × MPPT inputs, generator support, Wi-Fi monitoring, 97.5% efficiency.

• Battery Flexibility: Compatible with Flooded Lead Acid or Lithium batteries.

• Outdoor-Rated Design: NEMA 3R enclosure ready for all-weather installation.

• Expandable Architecture: Parallel stack up to 8 inverters; add panels or batteries anytime.

• Fast Transfer: 4ms transfer time for seamless switch from grid to battery.

Use Cases

• Suitable For: Small to large homes, off-grid cabins, RV setups, garages, pole barns.

• Runs: Wells, refrigerators, freezers, TVs, lights, washers, fans, electronics, and small AC systems.

Energy Production

• Daily Output: ~118,800 watts/day (based on 4.5 hrs peak sun)

• Monthly Output: Ideal for homes using ~3,500 kWh/month; expandable for higher loads.

• Regional Variation: Lower production in the Northeast; higher in Southwestern U.S.

Installation

• DIY-Friendly: Installable by homeowners with basic wiring knowledge.

• Support Recommended: If unfamiliar with wiring, hire a licensed electrician.

• Most Labor-Intensive Step: Ground-mount construction (racking and pipe setup).

Warranty

• Sol-Ark Inverter: 10 years

• Bifacial Solar Panels: 30-year power warranty