Growatt 12kW Off-Grid Solar Kit – 9000W Panels + Battery

12kW Off-Grid Solar Power for Home or Cottage

Growatt SPE 12000US inverter with a 9,000W array of 20 Canadian Solar 450W panels and your choice of LiFePO4 storage.

Growatt SPE 12000US Inverter

12,000W rated pure sine wave output; 120/240V split-phase; 48V battery system; dual MPPT; solar, battery, utility and generator inputs. WiFi module included. Install in a dry, ventilated, protected location per the manual.

Available power depends on battery limits, solar input, temperature, state of charge and loads. Included batteries do not guarantee 12kW continuous battery-only output.

20 Canadian Solar 450W Panels for Harsh Canadian Weather

The panels are rated for snow loads up to 8,100 Pa and wind loads up to 6,000 Pa under the manufacturer's specified mounting conditions. Matching panel construction passed independent 50 mm hail testing. A panel operating-temperature range of −40°C to +85°C supports use through Canada's changing seasons.

These ratings apply to the panels—not the entire system. Install the inverters in a dry indoor location and keep batteries within their specified operating temperature.

Choose Your Battery Storage

Both options use LiFePO4 batteries. Choose Growatt ALP if you prefer the same brand for your inverter and battery, or GSL for a value-focused alternative. Compare the storage capacity and price shown for each kit.

AC energy is lower after conversion losses; runtime varies with conditions. GSL charging range: 0–55°C. Follow battery manuals for temperature limits, clearances and protection.

What's Included

• 1 × Growatt SPE 12000US 12kW inverter.
• 20 × Canadian Solar CS6.1-54TM-450H 450W panels.
• Your selected battery: 3 × Growatt ALP LV-US 5.12kWh modules, or 1 × GSL 14.34kWh indoor battery.
• 1 × WiFi module.
• 2 × sets of 40ft 10 AWG solar-panel-to-inverter cables.
• 1 × battery-to-inverter connection cable.
• 1 × two-pole 600V 20A DC circuit breaker and 1 × circuit breaker box.
• Inverter and battery user manuals.

Mounting racks are optional. Contact ROCKSOLAR for a mounting solution for all 20 panels and any additional installation materials required for your site.

Installation Materials and Protection

The diagram is conceptual, not a packing list. 

• Shipping: Orders are processed within 1–2 business days. Standard delivery takes 3–7 business days depending on your location.
• Returns: You may return or exchange products within 30 days of receiving your order. Items must be in original condition with proof of purchase.
• If your item is defective or damaged due to manufacturing issues, we’ll gladly replace it at no additional cost.Shipping: This kit requires freight delivery. Contact ROCKSOLAR to confirm freight charges, delivery access and timing for your address before ordering. Datasheet component weights are 619.5 kg with ALP batteries or approximately 613.2 kg with the GSL battery; packaging, the ALP base and accessories without specified weights are additional.
  
  Returns: Contact ROCKSOLAR for return authorization before sending any item back. The 30-day return policy has eligibility conditions and exclusions, including oversized or overweight items. Change-of-mind returns may incur return shipping and restocking fees. Confirm this kit’s eligibility before purchase. See our Return, Refund & Replacement Policy and Shipping Policy for full terms.