70KW Complete Offgrid Solar Kit + 4x 15K Sol-Ark Inverter +70.4KW Solar with Mounting Rails and Wiring

The 70KW Complete Offgrid Solar Kit + 4x 15K Sol-Ark Inverter +70.4KW Solar with Mounting Rails and Wiring is engineered for large homes, farms, and high-demand off-grid properties. Delivering ~316,800 watts per day (based on 4.5 hours of sun), it suits usages around 9,500 kWh/month and is built for future expansion with additional panels or batteries. This kit can run with or without a battery; you may add a 48V battery bank at any time to the Sol-Ark system.

Specifications

• Solar Array: 128 × 550W bifacial mono panels (70,400W total)

• Inverters: 4 × Sol-Ark 15K 48V hybrid/off-grid (MPPT charge controllers built-in)

• Mounting Hardware: IronRidge mounting rails / splices / legs / fasteners / bolts (mill finish)

• Wiring & Balance of System: 4 × PV combiner boxes; 2 × 500' 10AWG MC4 solar cabling; MC4 crimper tool set; 2 × 100' 6AWG AC output/input/generator cables; 2 × 20' 2/0 AC main line; 4 × wire gutter boxes; AC combiner box kit (2+ Sol-Ark); installation manual

Features

• Bifacial Double-Glass Panels: Up to 25% rear-side gain, strong low-light performance, 5400 PA snow / 2400 PA wind ratings, and 30-year power warranty

• Battery-Optional Operation: Run now without batteries; add a 48V bank anytime

• Sol-Ark Intelligence: LCD touchscreen, Wi-Fi connectivity, generator support, DC transformerless design, 97.5% efficiency, NEMA 3R outdoor rating

• Flexible Power Modes: Grid-tie or off-grid; works with or without batteries; 48V battery input supports lead-acid or lithium

• Scalable Architecture: Parallel stacking up to 8 Sol-Ark 15K units

• Fast Transfer: ~4 ms transfer time from batteries to grid power

Maintenance

• Daily: Check production in the Sol-Ark app/display; visually scan array and wiring

• Weekly: Inspect combiner boxes, rail fasteners, and conduit/gutters

• Annually: Clean panels; torque-check mounts; review inverter firmware/settings

Warranty

• Solar Panels: 30-year performance warranty

• Sol-Ark Inverters: 10-year manufacturer warranty