40KW Complete Offgrid Solar Kit + 3x 15K Sol-Ark Inverter + 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 + 32kWh OMO 48V Freedom Series Lithium Battery +40.15KW Solar with Roof Mount and Wiring is engineered for full off-grid homes, farms, and high-demand properties. Featuring a 40.15KW bifacial solar array, three Sol-Ark 15K hybrid/off-grid inverters, and 32kWh of heated lithium battery storage, this system provides reliable whole-property power. With approximately 180,675 watts/day of solar production (4.5 sun-hours), it supports properties using around 5,420 kWh/month and can be easily expanded with more panels or batteries.

Specifications

• Solar Array: 73 × 550W bifacial mono panels (40,150W total)

• Inverters: 3 × Sol-Ark 15K Hybrid/Off-Grid All-in-One (48V) with built-in MPPT charge controller

• Battery Storage: 1 × OMO 32kWh 48V Freedom Series heated lithium battery with Bluetooth & LCD

• Mounting: IronRidge ROOF mount kit (Rails, Splices, L-Feet, Fasteners & Bolts)

• Combiner & Electrical: 3 × Solar PV combiner boxes; 1 × AC combiner box kit (multi-Sol-Ark setup); 3 × wire gutter boxes

• Wiring: 2 × 500' spools 10AWG MC4 solar cable; 2 × 100' spools 6AWG AC generator/output wiring; 2 × 20' spools 2/0 AC main line

• Tools & Accessories: MC4 crimper tool set; Anderson plug battery cable set; Installation manual

• Battery Specs: Battery Specification Sheet

Features

• Bifacial Double-Glass Panels: Up to 25% rear-side energy gain with enhanced low-light performance

• Durability: 5400 PA snow load / 2400 PA wind load; 30-year power warranty

• Scalable System: Add more panels, batteries, and inverters as needed

• Whole-Home Energy: Supports large homes, farms, and heavy electrical loads

• Advanced Power Control: Includes monitoring, generator support, and hybrid operation

Maintenance

• Daily: Review inverter status and battery state of charge

• Weekly: Inspect array for debris and check wiring/combiner boxes

• Annually: Clean panels and perform a full electrical system inspection

Sol-Ark 15K Inverter Specs

• Output: 120/240V split phase

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

• Modes: Grid-tie, hybrid, or off-grid

• MPPT: Built-in controller with 3 MPPT inputs

• Generator Support: Yes

• User Interface: LCD touch screen with WiFi connectivity

• Efficiency: 97.5% inverter efficiency

• Enclosure: NEMA 3R outdoor-rated; 10-year warranty

• Stacking: Parallel up to 8 units

• Transfer Time: ~4ms from grid to battery

Warranty

• Solar Panels: 30-year power warranty

• Sol-Ark Inverters: 10-year manufacturer warranty

• Lithium Battery: See specification sheet for warranty details