40KW Complete Offgrid Solar Kit + 3x 15K Sol-Ark Inverter + 3x 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 + 3x 32kWh OMO 48V Freedom Series Lithium Battery +40.15KW Solar with Roof Mount and Wiring is engineered for large homes, farms, and full off-grid properties that demand powerful, scalable, and reliable energy. Producing approximately 180,675 watts per day based on 4.5 sun-hours, this system supports households using around 5,420 kWh/month. With a massive 96kWh heated lithium battery bank and three Sol-Ark 15K hybrid/off-grid inverters, it delivers exceptional whole-home resilience and long-term expandability.

Specifications

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

• Inverters: 3 × Sol-Ark 15K Hybrid/Off-Grid All-in-One Inverters (integrated MPPT controller)

• Battery Storage: 3 × OMO 32kWh 48V Freedom Series Heated Batteries (96kWh total)

• Mounting System: IronRidge roof-mount rails, splices, L-feet, fasteners & bolts

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

• Wiring Included: 2 × 500' spools 10AWG MC4 solar wire; 2 × 100' spools 6AWG AC cabling; 2 × 20' spools 2/0 AC main line

• Tools & Cables: MC4 crimper tool set; 3 × Anderson plug battery cable sets; installation manual

• Battery Specs: Battery Specification Sheet

Features

• Bifacial Double-Glass Panels: Capture up to 25% extra power from rear-side illumination

• Durability: 5400 PA snow load & 2400 PA wind load rating; engineered for harsh climates

• High-Capacity Battery Bank: 96kWh heating-enabled lithium storage with Bluetooth & LCD monitoring

• Scalable Architecture: Supports expansion with additional panels, batteries, or stacked inverters

• Hybrid Flexibility: Operates off-grid, grid-tied, or hybrid with generator support

• Roof-Mount System: Ideal for homeowners maximizing solar efficiency on existing roof structures

Maintenance

• Daily: Check inverter status, battery charge, and system notifications

• Weekly: Inspect PV wiring, roof mounts, and combiner boxes

• Annually: Clean solar panels and perform a full system electrical review

Sol-Ark 15K Inverter Specs

• Output: 120/240V split phase

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

• Modes: Off-grid, grid-tie, or hybrid power

• MPPT: Built-in charge controller with 3 independent MPPT inputs

• Generator Support: Full integration supported

• Interface: LCD touchscreen + WiFi monitoring

• Efficiency: 97.5% inverter efficiency

• Enclosure: NEMA 3R (approved for outdoor installation)

• Warranty: 10 years

• Expandability: Parallel stacking up to 8 units

• Transfer Time: Ultra-fast 4ms switch to battery backup

Warranty

• Solar Panels: 30-year performance warranty

• Sol-Ark Inverters: 10-year manufacturer warranty

• Lithium Batteries: Warranty per battery spec sheet