20KW Complete Offgrid Solar Kit - 3x 32kWh OMO 48V Freedom Series Lithium Battery + 2x 15K Sol-Ark Inverter +19.8KW Solar with Ground Mount and Wiring

The 20KW Complete Offgrid Solar Kit - 3x 32kWh OMO 48V Freedom Series Lithium Battery + 2x 15K Sol-Ark Inverter +19.8KW Solar with Ground Mount and Wiring is designed for those who demand the best in whole-home off-grid performance. This robust system includes a 19.8KW bifacial solar array, two Sol-Ark 15K hybrid/off-grid inverters, and an impressive triple-battery bank consisting of 3× OMO 32kWh lithium batteries—providing a massive 96,000 watts of usable stored energy. Producing about 89,100 watts per day based on 4.5 sun hours, this package is ideal for large homes using around 2,670 kWh per month. Built for long-term scalability, it supports future expansion of both batteries and solar panels.

Specifications

• Solar Array: 36× 550W bifacial mono panels (19,800W total)

• Inverters: 2× Sol-Ark 15K Hybrid/Off-Grid 48V with built-in MPPT charge controllers

• Battery Bank: 3× OMO 32kWh 48V Freedom Series Heated Lithium Batteries (96kWh total; Bluetooth + LCD display)

• Ground Mount System: Complete Iron Ridge rail kit with top caps, connectors, hardware (3" Sch 40 pipe sourced locally)

• Cabling & Hardware: 2× PV combiner boxes, 1× AC Sol-Ark combiner kit, Anderson battery cable set, 500' 10AWG PV burial wire, 100' 6AWG AC/gen cable, 20' 4/0 AC main line, 2× gutter boxes, MC4 crimp kit, Installation manual

Features

• Bifacial Double-Glass Panels: Increase solar harvest by up to 25% from rear-side illumination with excellent low-light performance

• High Durability: Rated for 5400 PA snow load and 2400 PA wind load; backed by a 30-year performance warranty

• Massive Energy Storage: 96kWh heated lithium bank with Bluetooth monitoring and real-time LCD readout

• Sol-Ark System Features: 120/240V split phase, generator support, 3× MPPT inputs, LCD touchscreen, WiFi connectivity

• High Efficiency: 97.5% inverter efficiency, DC transformerless design, NEMA 3R outdoor rating, 10-year warranty

• Expandable Architecture: Built for large off-grid estates; supports up to 8 inverters in parallel and scalable battery additions

Maintenance

• Daily: Monitor inverter status and ensure solar panels remain clean and unobstructed

• Weekly: Inspect wiring, connectors, ground-mount structure, and confirm expected energy production

• Annually: Perform full hardware inspection, tighten mount points, service connectors, and update inverter firmware

Warranty

• Solar Panels: 30-year power warranty

• Sol-Ark Inverters: 10-year manufacturer warranty

Battery Specification Sheet