40KW Complete Offgrid Solar Kit + 3x 15K Sol-Ark Inverter + 2x 32kWh OMO 48V Freedom Series Lithium Battery +40.15KW Solar with Roof Mount and Wiring

The 40KW Complete Offgrid Solar Kit + 3x 15K Sol-Ark Inverter + 2x 32kWh OMO 48V Freedom Series Lithium Battery +40.15KW Solar with Roof Mount and Wiring is engineered for full off-grid living and high-demand energy environments. Featuring 3× Sol-Ark 15K hybrid/off-grid inverters, 64kWh of heated lithium storage, and a 40.15KW bifacial solar array, this system is ideal for large homes, farms, and properties requiring reliable whole-home power.

With an estimated output of 180,675 watts per day (based on 4.5 hours of sun), this package supports properties using approximately 5,420 kWh per month and is fully expandable for future solar and battery upgrades.

Specifications

• Solar Panels: 73 × 550W Bifacial Mono Panels (40,150W total array)

• Inverters: 3 × Sol-Ark 15K Hybrid/Off-Grid All-in-One Inverters (with built-in MPPT charge controllers)

• Battery Storage: 2 × OMO 32kWh 48V Freedom Series Heated Lithium Batteries with Bluetooth & LCD (64kWh total)

• Mounting Hardware: Complete IronRidge Roof-Mount Rails, Splices, L-Feet, Fasteners, and Bolts

• Combiner Boxes: 3 × Solar PV Combiner Boxes & 1 × AC Combiner Box Kit (Sol-Ark multi-unit compatible)

• Wiring Included:
  • 2 × 500' Spools 10AWG MC4 Solar Array Cable
  • 2 × 100' 6AWG AC Output/Input/Generator Cable
  • 2 × 20' Spools 2/0 AC Main Line Cable
  • 3 × Wire Gutter Boxes

• Tools & Accessories: MC4 Crimper Tool Set, 2 × Anderson Plug Battery Cable Sets

• Documentation: Installation Manual Included

Features

• Bifacial Panel Technology: Up to 25% additional rear-side energy capture with double-glass construction

• High Weather Resistance: Rated for 5400 PA snow load and 2400 PA wind load

• Massive Energy Storage: 64kWh heated lithium battery bank for large-scale off-grid power

• Whole-Property Power: Ideal for large homes, farms, or facilities with significant daily consumption

• Fully Expandable: Easily add more batteries, panels, or inverters as needs grow

Sol-Ark 15K Inverter Specifications

• Output: 120/240V Split Phase

• Battery Support: Works with or without batteries (48V lithium or lead-acid)

• Application: Grid-tie, hybrid, or off-grid operation

• Charge Controller: Built-in MPPT with 3 independent inputs

• Generator Support: Automatic integration

• Interface: LCD Touch Screen + WiFi Connectivity

• Design: DC Transformerless

• Efficiency: 97.5%

• Enclosure: NEMA 3R (Outdoor-rated)

• Warranty: 10 Years

• Parallel Stacking: Up to 8 units

• Transfer Time: 4ms from grid to battery

Battery Specification Sheet

Maintenance

• Daily: Monitor inverter output and battery charge levels

• Weekly: Check wiring, combiner boxes, and panel cleanliness

• Annually: Perform full system inspection, panel cleaning, and confirm torque on mounting hardware

Warranty

• Solar Panels: 30-Year Power Warranty

• Sol-Ark Inverters: 10-Year Manufacturer Warranty

• Lithium Batteries: Manufacturer Warranty (See PDF for full details)