40KW Complete Offgrid Solar Kit + 3x 15K Sol-Ark Inverter +40.15KW Solar with Mounting Rails and Wiring

The 40KW Complete Offgrid Solar Kit + 3x 15K Sol-Ark Inverter +40.15KW Solar with Mounting Rails and Wiring is engineered for full off-grid homes, large properties, and farms requiring dependable daily power. Producing approximately 180,675 watts per day (at 4.5 peak sun hours), this system is ideal for properties consuming around 5,420 kWh per month. Designed for long-term scalability, it allows seamless expansion of both battery capacity and solar array size.

This system can operate with or without batteries. A 48V battery bank can be added at any time for backup power, load shifting, or extended autonomy.

Specifications

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

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

• Mounting System: IronRidge mounting rails, splices, legs, fasteners & bolts — mill finish

• Combiner Equipment: 3 × Solar PV combiner boxes

• Solar Wiring: 2 × 500' spools of 10AWG MC4 PV cabling

• AC Wiring: 2 × 100' spools of 6 AWG AC cabling; 2 × 20' spools of 2/0 AC main line

• Included Tools: MC4 crimping tool set

• Additional Hardware: 3 × wire gutter boxes; 1 × AC combiner box kit (multi-Sol-Ark compatible)

• Documentation: Complete installation manual

• Warranty (Panels): 30-year power warranty, rated 5400 PA snow load / 2400 PA wind load

Features

• Bifacial Solar Efficiency: Dual-glass panels capture up to 25% more energy from rear-side reflection and excel in cloudy or low-light environments

• Battery-Optional Operation: System functions immediately without batteries; add 48V storage anytime

• Heavy-Duty Build: High snow and wind load rating ensures long-term durability in extreme climates

• Flexible System Design: Built for expansion with additional panels or battery modules

• Professional Installation Available: Contact for custom installation quotes by region

Sol-Ark 15K Inverter Specs

• Output: 120/240V split phase

• Battery Modes: Operates with or without 48V batteries (lithium or lead acid)

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

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

• Generator Ready: Full generator support for backup integration

• Interface: LCD touch screen with WiFi monitoring

• Efficiency: 97.5% inverter efficiency

• Enclosure: NEMA 3R outdoor-rated

• Warranty: 10 years

• Parallel Capability: Stack up to 8 units in parallel

• Transfer Time: 4ms switching from grid to battery backup

Maintenance

• Daily: Check inverter status and system performance

• Weekly: Inspect mounting hardware and verify system airflow and wiring

• Annually: Clean panels, check torque on mounting rails, and perform a full electrical inspection

Warranty

• Solar Panels: 30-year performance warranty

• Sol-Ark Inverters: 10-year warranty