25KW Complete Offgrid Solar Kit - 15K Sol-Ark Inverter + 30.72KW OMO Stack Lithium Battery +26.4KW Solar with Ground Mount and Wiring

The 25KW Complete Offgrid Solar Kit - 15K Sol-Ark Inverter + 30.72KW OMO Stack Lithium Battery +26.4KW Solar with Ground Mount and Wiring provides a complete high-output solution for powering an entire home off-grid. This package includes a robust 15K Sol-Ark split-phase inverter, a 30.72 kWh heated lithium battery bank, and a 26.4 kW bifacial solar array engineered for maximum performance. Delivering approximately 118,800 watts per day with 4.5 hours of peak sun, this system is ideal for larger homes consuming around 3,500 kWh per month. Designed for long-term scalability, additional batteries or solar panels can be easily added to expand capacity.

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: 6 × OMO 51.2V 5.12 kWh Heated Stackable Lithium Batteries with Bluetooth (30.72 kWh total)

• Combiner: OMO Stackable Combiner with LCD Readout

• Mounting System: Full IronRidge Ground Mount kit (rails, top caps, connectors, bolts). Customer supplies 3" Sch 40 pipe.

• Base Unit: 1 × OMO Wheeled Base Unit

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

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

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

Features

• Bifacial Double-Glass Solar Panels: Capture up to 25% additional rear-side energy, ideal for cloudy or low-light conditions; 5400 PA snow load, 2400 PA wind load; 30-year power warranty.

• Sol-Ark 15K Output: 120/240V split phase; 9kW continuous / 16kW surge (10 seconds).

• Battery Flexibility: Supports both flooded lead-acid and modern lithium batteries.

• MPPT Charging: Built-in 3× MPPT charge controllers.

• Smart Controls: WiFi connectivity, LCD touchscreen, transformerless high-efficiency design (97.5%).

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

• Expandable: Stack up to 8 inverters in parallel for increased power.

• Fast Transfer: 4ms switch time from grid to battery backup.

Suitable For

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

• Supported Appliances: Well pumps, washing machines, fans, TVs, lights, refrigerators, freezers, computers, tablets, small AC systems.

Energy Production

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

• Monthly Suitability: Works well for ~3,500 kWh/month homes, expandable for higher usage.

• Sun Variability: Northeast receives less peak sun; Southwest receives more.

Installation

• DIY-Friendly: Suitable for homeowners with basic wiring knowledge.

• Electrician Needed: Recommended if not experienced with electrical systems.

• Main Labor Effort: Ground mount assembly (rails, posts, alignment), typically the most time-consuming step.

Warranty

• Inverter: 10 years

• Solar Panels: 30-year power warranty