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

The 25KW Complete Offgrid Solar Kit - 15K Sol-Ark Inverter + 30.72KW OMO Stack Lithium Battery +26.4KW Solar with Mounting Rails and Wiring is designed for whole-home independence. It pairs dual Sol-Ark 15K split-phase inverters with a 30.72 kWh heated lithium battery bank and a 26.4 kW bifacial solar array. With about 4.5 hours of peak sun, the system produces ~118,800 watts per day and is well-suited for larger homes using around 3,500 kWh per month. Built for growth, it’s easy to expand with additional panels or batteries.

Specifications

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

• Inverters: 2 × Sol-Ark 15K-2P-N Split-Phase (grid-tie or generator compatible)

• Battery Bank: 6 × OMO 51.2V 5.12 kWh Heated Stackable Lithium w/ Bluetooth (30.72 kWh total)

• Combiner & Monitoring: OMO Stackable Combiner with LCD Readout

• Mounting System: Complete IronRidge ROOF mount rails, splices, L-feet, fasteners, bolts

• Base Unit: OMO Wheeled Base Unit

• Combiner Boxes: 2 × Solar PV combiner boxes + AC combiner box kit (for 2+ Sol-Ark)

• Cabling: 500′ 10 AWG MC4 solar cable; 100′ 6 AWG AC output/input/generator cable; 20′ 2/0 AC main line

• Accessories: MC4 crimper tool set, wire gutter boxes, installation manual

Features

• Bifacial Double-Glass Panels: Up to 25% rear-side gain; improved low-light output; 5400 Pa snow / 2400 Pa wind load; 30-year power warranty

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

• Battery Flexibility: Works with flooded lead-acid or lithium batteries

• Charging: Built-in MPPT charge controller with 3 × MPPT inputs

• Controls & Connectivity: LCD touchscreen, Wi-Fi, DC transformerless design, 97.5% inverter efficiency

• Weather-Ready: NEMA 3R outdoor-rated enclosure

• Scalability: Parallel stacking up to 8 Sol-Ark units

• Transfer Speed: 4 ms switch from grid to battery power

• Suitable Loads: Well pumps, washing machines, fans, TVs, lights, refrigerators, freezers, phones/PCs/tablets, smaller AC systems

Maintenance

• Daily/Weekly: Keep inverter vents clear; wipe dust from equipment; visually check status on LCD/Wi-Fi app

• Monthly: Inspect roof-mount hardware (rails, L-feet, bolts) and cable runs; ensure MC4 connectors are secure

• Seasonally: Clean panel glass as needed for peak production; verify combiner box and breaker labeling

• Annually: Have a licensed electrician inspect terminations, breakers, grounding, and overall system health

Warranty

• Inverter: 10 years

• Solar Panels: 30-year power warranty