Off-Grid Solar Kit 20kW 48V 120V/240V LiFePO4 30.72-32.14kWh 32×450W N-Type Solar Panels (SGR-20K30E)

Off Grid Solar Systems — 20kW 450W N-Type Bifacial 56kWh/Day Complete System

Large-scale off grid solar systems that power everything without compromise — the SGR-20K30E is a 20kW dual-inverter split-phase system built around 32 × 450W Bifacial N-Type monocrystalline panels generating up to 56kWh per day from just four hours of sunlight, paired with 30.72–32.14kWh of LiFePO4 battery storage across three selectable configurations. This is the off grid solar kit for large homes, multi-unit properties, farms, commercial facilities and any application where a 10kW or 12kW system is genuinely insufficient for the load profile. Two 10kW inverters operate in coordinated split-phase 120V/240V configuration, the 32-panel bifacial N-Type array maximises every available sun-hour, and three distinct battery options cover standard, cold-climate and outdoor installation requirements.

Table of Contents

1. Kit Contents by Configuration
2. System Specifications
3. Dual 10kW Inverter Architecture
4. 32 × 450W Bifacial N-Type Panels — 56kWh Daily
5. Battery Configuration Options
6. Who Is This System For?
7. Scalability to 120kW
8. FAQ

Kit Contents by Configuration

SGR-20K30E (Standard LiFePO4):

• 2 × 10,000W 48V DC 120V/240V AC Inverter (Up to 6 units parallel)
• 32 × 450W Bifacial N-Type Monocrystalline Solar Panels
• 6 × 100AH 51.2V LiFePO4 Battery SG48100P
• 1 × Enclosed Battery Cabinet
• 4 Sets × 50ft Solar Extension Cables (Inverter PV Input)
• 32 × Sets Mounting Z-Brackets
• 2 × 200A DC Breaker
• 4 × 25A PV Breaker

SGR-20K30T (Self-Heating LiFePO4): Same as SGR-20K30E but with 6 × 100AH 51.2V Self-Heating LiFePO4 SGH48100T batteries — essential for cold-climate installations where winter temperatures regularly drop below 0°C.

SGR-20K32P (PowerMax Outdoor): Same as above but with 2 × PowerMax 51.2V 314AH Outdoor Energy Storage Battery + battery parallel cable — providing 32.14kWh of outdoor-rated storage in the highest-capacity configuration.

System Specifications

Dual 10kW Inverter Architecture

The SGR-20K30E uses two 10kW inverters operating in coordinated split-phase 120V/240V configuration — delivering a combined 20kW of continuous output. This dual-inverter architecture provides:

• 20kW of continuous load capacity — simultaneous operation of multiple air conditioning units, well pumps, electric water heaters and complete home loads
• Built-in redundancy — if one inverter requires service, the system continues operating on the remaining unit at reduced capacity
• Each inverter supports up to 6-unit parallel expansion — the combined system is expandable to 120kW of total output
• Split-phase 120V/240V output from both inverters in coordination — no 240V load limitation

For large-scale off grid solar power kits applications requiring genuine commercial-grade output, the dual-inverter 20kW architecture is the minimum specification for whole-property independence.

32 × 450W Bifacial N-Type Panels — 56kWh Daily

At 32 panels producing 14,400W of total array capacity, the SGR-20K30E generates up to 56kWh per day from four hours of peak sun — enough to cover the daily consumption of large residential properties, small commercial operations and multi-unit dwellings with substantial headroom.

The 450W Bifacial N-Type panels deliver the dual advantage of N-Type low-degradation silicon and bifacial rear-face energy capture — maximising annual energy yield per panel across the 30-year system lifetime. For off grid solar panels at this scale, N-Type bifacial technology ensures the generation investment maintains near-rated output across the full warranty period rather than degrading progressively toward minimum warranty thresholds.

Battery Configuration Options

Three battery configurations address different installation environments and storage requirements:

Standard (SGR-20K30E): 6 × 100AH LiFePO4 in an enclosed cabinet — 30.72kWh of indoor-rated storage for temperate climate installations.

Cold Climate (SGR-20K30T): 6 × 100AH Self-Heating LiFePO4 — the non-negotiable specification for installations where ambient temperatures regularly fall below 0°C. Self-heating elements maintain optimal charge acceptance through winter, preventing the performance degradation that standard LiFePO4 experiences in cold conditions.

Maximum Storage (SGR-20K32P): 2 × PowerMax 314AH outdoor-rated batteries delivering 32.14kWh in an outdoor-compatible enclosure — the right choice for locations where indoor battery installation is not practical.

Who Is This System For?

The SGR-20K30E off grid solar system kit is appropriate for:

• Large residential properties (4,000+ sq ft) with high daily consumption
• Multi-unit residential developments seeking shared off-grid infrastructure
• Farm and agricultural operations requiring whole-facility power independence
• Light commercial operations — retail, workshops, offices
• Remote resort and hospitality facilities
• Emergency preparedness infrastructure for community facilities

Scalability to 120kW

Each 10kW inverter in this system supports up to 6-unit parallel operation. With two inverter units as the foundation, the SGR-20K30E can be expanded to a maximum of 12 parallel inverters — delivering 120kW of total system output. This makes the SGR-20K30E a genuine platform investment rather than a fixed-capacity purchase.

Explore additional large-capacity solar kit configurations in our Solar Kits, Off-Grid Solar Systems and Solar Panels categories.

FAQ

What is the daily output of this 20kW off grid solar system? With 14,400W of solar panels and 4 hours of peak sun, this off grid solar system generates up to 56kWh per day — more than double the daily consumption of an average North American home and sufficient to power large properties, farms and light commercial operations from a single system.

Why does this off grid solar kit use two inverters? Dual 10kW inverters provide 20kW of combined continuous output for high-demand applications that exceed a single inverter’s capacity. The dual architecture also provides built-in redundancy — if one inverter requires service, the system continues operating at 10kW on the remaining unit. Each inverter independently supports up to 6-unit parallel expansion.

What is the cold-climate battery option and when do I need it? The SGR-20K30T self-heating LiFePO4 option includes battery heating elements that maintain optimal charge acceptance when ambient temperatures drop below 0°C (32°F). Standard LiFePO4 chemistry significantly limits charge acceptance in cold temperatures — causing reduced daily recharging and battery degradation over time in cold climates. If your installation location experiences regular sub-freezing temperatures, the self-heating configuration is the appropriate specification.

Can this system power a commercial facility? Yes — at 20kW continuous output with up to 56kWh of daily generation and 30+ kWh of storage, the SGR-20K30E is appropriately scaled for light commercial applications including retail stores, workshops, office buildings and hospitality facilities with moderate power demands.

How scalable is this off-grid solar system packages with batteries? The SGR-20K30E is extremely scalable. Each of the two 10kW inverters supports up to 6-unit parallel operation — enabling the combined system to scale from 20kW to 120kW of total output. Additional solar panels and battery banks can be added at any time. The system architecture supports growth from a large residential installation to a commercial microgrid without requiring a complete redesign.