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12kW Off-Grid Solar System with 8.8kW Panels & 14.34kWh LiFePO4 Battery

Sale price $9,999.99 Regular price $19,999.99
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Description

Power your home, cottage, cabin, farm, or remote property with the ROCKSOLAR 12kW Off-Grid Solar System. Featuring a Growatt SPE12000 US 12kW inverter, 8.8kW bifacial solar array, and GSL 14.34kWh LiFePO4 battery, this complete system delivers reliable 120/240V split-phase power for residential off-grid living.

Key Features

  • 12kW Growatt SPE12000 US inverter
  • 120/240V split-phase pure sine wave power
  • Up to 36kW surge power
  • 20 × JA Solar 440W bifacial solar panels
  • 8.8kW total solar array
  • 14.34kWh GSL LiFePO4 battery
  • Dual MPPT solar inputs
  • Supports up to 18kW PV input
  • Generator charging support
  • Ideal for homes, cottages, farms, cabins, and remote properties

14.34kWh GSL LiFePO4 Battery

The included GSL residential battery provides dependable, long-life energy storage for demanding off-grid applications.

  • 51.2V / 280Ah
  • 14.34kWh nominal capacity
  • 90% recommended depth of discharge
  • 8,500+ cycle life
  • Integrated BMS
  • CAN, RS485 & WiFi communication
  • IP65-rated enclosure
  • Expandable up to 16 batteries in parallel
  • 15-year warranty

120/240V Split-Phase Power

The Growatt SPE12000 US supplies both 120V and 240V power, making it suitable for everyday household loads and compatible larger appliances, including refrigerators, lighting, electronics, well pumps, kitchen appliances, washing machines, power tools, and other 240V equipment.

Actual runtime depends on solar production, battery state of charge, and connected loads.

System Specifications

Specification Details
Inverter Growatt SPE12000 US
Rated Output 12,000W
AC Output 120/240V Split Phase
Surge Power Up to 36,000W
Solar Array 8.8kW
Solar Panels 20 × 440W Bifacial
Maximum PV Input 18kW
Battery GSL 14.34kWh LiFePO4
Battery Voltage 51.2V
Battery Capacity 280Ah
Generator Charging Supported

What’s Included

  • 1 × Growatt SPE12000 US 12kW Off-Grid Inverter
  • 1 × GSL 51.2V 280Ah 14.34kWh LiFePO4 Battery
  • 20 × 440W Bifacial Solar Panels
  • 2 × 40 ft PV Cables
  • 1 × 600V 20A 2-Pole DC Circuit Breaker
  • 1 × Breaker Box

Warranty & Support

  • GSL 14.34kWh Battery: 15-Year Warranty
  • Growatt SPE12000 US Inverter: 5-Year Standard Warranty
  • 440W Solar Panels: 25-Year Warranty
  • Solar Panel Service Life: 30+ Years
  • Lifetime ROCKSOLAR Technical Support

Reliable Off-Grid Power for Homes & Cottages

With a 12kW split-phase inverter, 8.8kW bifacial solar array, and 14.34kWh LiFePO4 battery storage, this system provides a powerful foundation for reliable off-grid living. It is well suited for homes, cottages, cabins, farms, homesteads, and remote properties across the USA.

SPECIFICATIONS

Energy Capacity 5.0kWh
Max Charge/Discharge Power 3kW
Max Charge/Discharge Current 60A
Dimensions 650 x 350 x 165mm (W x D x H)
Weight 42kg
Nominal Voltage 51.2V
Warranty 10 years
Battery Type Cobalt Free Lithium Iron Phosphate (LFP)
Operating Voltage Range 48 - 57.6V
Installation Floor installation
Operation Temperature 0°C-50°C/32-122°F
DoD 92%
Communication Port CAN/RS485
Performance Warranty 10 years
Certification CE, ROHS, UL1973+FCC, UN38.3 + IP65
Growatt Off-Grid Storage SPE12000 US Details
Battery Voltage 46 – 60 VDC (Lithium)
Battery Type Lithium/Lead-acid
Inverter Output (Rated Power) 12KW
Surge Rating 36KW
Waveform Pure sine wave/ same as input (bypass mode)
Nominal Output Voltage RMS 120/240Vac (195-255Vac)(optional)
Output Frequency 60Hz (58.3~61.7Hz)
Inverter Efficiency (Peak) 96.50%
Transfer Time ≤20ms Single /≤30ms Parallel
Solar Charger (Maximum PV Charge Current) 27A(Per MPPT)
Maximum PV Array Power 18000W(9000W per MPPT)
AC Input Voltage 120/240Vac
Max. Charging Current 70A
Protection Degree IP20
Dimensions (W/H/D) 550/465/150 mm
Weight 21.5kg
Operating Environment (Temperature Range) 0°C to 50°C
Warranty 5-year standard warranty
ROCKSOLAR 440W Bifacial Rigid Solar Panel Details
Panel Type Bifacial Panels
Power Output 440W
System Voltage 32.8V
Cell Efficiency 20-23%
Frame Material Aluminum
Dimensions 1480mm x 670mm
Weight approx. 25-30 lbs
Operating Temperature -40°C to +85°C
Waterproof Rating IP68
Front Glass High light transmittance, low-iron tempered glass
Bypass Diodes Integrated
Connectors MC4
Cable Length Varies depending on the brand (approx. 3-6 ft)
Mounting Hole Locations Pre-drilled
Service Life 25 years or more
Warranty 10 years

INCLUDES

Datasheet & User Manual

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