Growatt SPE 12000US 12kW off-grid kit with 9kW Canadian Solar array and choice of one GSL 14.34kWh battery or two GSL batteries totaling 28.68kWh.

Growatt SPE 12000US: 12kW 120/240V split-phase, dual MPPT, up to 18kW recommended PV power, 550V DC maximum, 27A per MPPT, utility and generator input, smart load, up to nine in parallel, 96.5% peak efficiency, Wi-Fi, five-year standard warranty and IP20 indoor installation. This kit includes 9kW of panels.

GSL 14.34kWh 51.2V 280Ah indoor battery specifications and SGS UL 9540 certificate reference SGSNA/25/GZ/00397X; documented certification conditions apply.

Canadian Solar 450W all-black monofacial TOPCon panel with front and rear views showing the horizontal reinforcing bar. Twenty panels provide 9,000W.

Conceptual 12kW kit connections with twenty 450W panels, Growatt SPE 12000US inverter and one GSL 14.34kWh battery. Final design and string sizing require verification.

Illustrative Canadian cottage with twenty roof-mounted solar panels and an indoor Growatt inverter and GSL battery installation. Panel racking is optional.

Growatt 12kW Off-Grid Solar & Battery Kit – 9kW Panels (UL&CSA certified)

Vendor: ROCKSOLAR CANADA

Type: Off Grid Solar Kit Home & Cottage

SKU: SYS-12KW-GSL14.34-SPE12-20x450CS-2

$10,799.99 CAD

Available in stock (22)

Fast & trackable delivery

Canadian owned & operated business

25+ years of solar industry experience

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Trusted by 10000+ Canadian customers

Hassle-free 30-day return policy, exceptions may apply.

Industry-Leading Warranty

Choose your battery: 1 x GSL 14.34Kwh Battery

1 x GSL 14.34Kwh Battery 2 x GSL 14.34Kwh Battery

Reliable Shipping Across Canada

Description

Solar + Battery Kit — Battery Included. Includes Canadian Solar panels, Growatt inverter equipment and your choice of one or two GSL Energy 14.34kWh LiFePO4 batteries.

Safety Standards & Certification

This kit pairs GSL Energy LiFePO4 storage with a Growatt SPE 12000 US off-grid inverter. The supplied certification documents identify the following standards and references.

Equipment / documentation	Standards	Certificate / report reference
GSL Solar Home Energy Storage System	ANSI/CAN/UL 9540:2023, Third Edition	SGS Certificate of Compliance SGSNA/25/GZ/00397X Effective 31 October 2025
Growatt SPE 12000 US PV off-grid inverter	UL 1741:2021, Third Edition, revised 23 October 2024 CSA C22.2 No. 107.1:2016, Fourth Edition + Update 1	cETLus Authorization to Mark Report 250220148GZU-001 Control number 4003184 Issued 11 April 2025

System Configuration & Installation

For DC energy-storage installations, the inverter and battery must meet the applicable certification conditions and manufacturer requirements for voltage, current, protection, controls and compatibility. Installation must follow the applicable electrical code and equipment instructions. Confirm coverage for the exact installed configuration against the certification documentation.

Warranty & Support

Growatt SPE 12000 US inverter: 5-year standard manufacturer warranty.
GSL Energy 14.34kWh battery: 10-year manufacturer warranty, as specified in the battery datasheet supplied for this kit.
Canadian Solar CS6.1-54TM-450H all-black panels: 25-year limited product warranty for eligible rooftop installations; the standard 12-year limited product warranty applies where the extended rooftop coverage does not apply.
Canadian Solar panel performance: 30-year limited linear power performance warranty, subject to the applicable manufacturer warranty statement.

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 one or two GSL Energy 14.34kWh LiFePO4 batteries.

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 GSL Battery Storage

Choose 1 × GSL battery for 14.34kWh nominal storage or 2 × GSL batteries for 28.68kWh nominal storage. Both options use the same 51.2V indoor wall-mount LiFePO4 batteries.

Specification	1 × GSL Battery	2 × GSL Batteries
Battery quantity	1 × 14.34kWh	2 × 14.34kWh
Total nominal energy	14.34kWh	28.68kWh
Recommended discharge energy at 95% DoD	13.623kWh	27.246kWh total
Nominal system voltage	51.2V	51.2V, batteries in parallel
Current rating per battery	100A recommended; 150A maximum
Enclosure / chemistry	IP20, indoor installation / LiFePO4

AC energy is lower after conversion losses. Available power and runtime depend on inverter limits, battery limits, state of charge, loads and installation conditions. The two-battery configuration requires correctly sized parallel connections, protection and communications in accordance with the equipment manuals.

What's Included

1 × Growatt SPE 12000US 12kW inverter.
20 × Canadian Solar CS6.1-54TM-450H 450W panels.
Your selected battery package: 1 × GSL 14.34kWh battery or 2 × GSL 14.34kWh batteries (28.68kWh total nominal storage).
Battery mounting bracket(s); confirm mounting accessories for the selected battery quantity.
1 × WiFi module.
2 × sets of 40ft 10 AWG solar-panel-to-inverter cables.
1 × battery-to-inverter connection cable.
1 × 2 String IMO Disconnect switch
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 & Returns

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.

Payment & Security

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Growatt 12kW Off-Grid Solar & Battery Kit – 9kW Panels (UL&CSA certified)

$10,799.99 CAD

1 × Growatt SPE 12000US 12kW 120/240V split-phase inverter
20 × Canadian Solar CS6.1-54TM-450H 450W monofacial TOPCon panels — 9,000W total, with rear reinforcing bar
1 or 2 × GSL 14.34kWh IP20 indoor battery
Optional mounting racks for 20 panels — contact ROCKSOLAR for site-specific racking; not included as standard
1 x Wifi Module Included
2 x Sets of 40Ft 10 AWG Cables for Solar Panel to Inverter Connection
1 x Battery to Inverter Connection Cable
1 x 2 String IMO DC Disconnnect Switch
1 x User Manual for the Inverter
1 x User Manual for the Battery
Battery wall amount rack

Can this 12kW solar kit power my whole home?

It may suit a home with appropriately managed loads, but whole-home suitability requires an energy assessment. Electric heating, water heating, EV charging and large motors can substantially increase the solar, battery and backup capacity needed.

What is included in the main equipment package?

The kit combines one Growatt SPE 12000US inverter, twenty Canadian Solar 450W panels and your selected battery package. The panels provide a 9kW array. Refer to the listing’s included-items section for the supplied cables and accessories.

How do the Growatt and GSL battery options compare?

The Growatt ALP option provides 15.36kWh of nominal storage from three modules. The GSL option provides 14.34kWh from one indoor wall-mounted battery. Compare both storage and discharge capability when choosing—not capacity alone.

Can either included battery option deliver 12kW continuously without solar?

No. The included battery options do not support a promise of 12kW continuous battery-only AC output. The inverter’s rating is higher than the batteries’ available continuous output after conversion losses. Heavier nighttime loads need a battery-sizing review.

How is this different from the 12kW kit with a 10.8kW array?

Both packages use a 12kW Growatt inverter. This kit has twenty panels and smaller battery options; the 10.8kW package has twenty-four panels and larger storage options. The larger package offers more solar collection capacity and stored energy.

Will the Canadian Solar panels withstand winter weather?

The panels have published snow and wind ratings subject to the manufacturer’s mounting requirements. Matching panel construction has also passed independent hail testing. These are panel-specific ratings—not a guarantee against every storm or a weatherproof rating for the complete kit.

Can I add a generator for extended cloudy periods?

The SPE 12000US supports a compatible generator input. A generator can help when solar and stored energy are insufficient, but sizing must account for your loads and charging needs. Generator equipment is sold separately.

Is this a complete, ready-to-install package?

It is an equipment kit, not a finished installation. Panel racking is optional, and site-specific wiring, protection and other materials may be required. Have the installation design and battery communication setup confirmed before commissioning.

Order received but not yet installed

I received my order for this solar system. The process was a bit bumpy as I am located in rural Alberta, so shipping was a challenge to my location. The customer service that I received from Marsha was outstanding and I felt really good about the sales and delivery process. Every effort was made to ensure that the order was fulfilled and received with many feedback opportunities. We have not yet installed the system, but I will submit another review once it is up and running.

Needs Clearer Setup Instructions

The setup instructions could be clearer, but once installed, this solar kit offers consistent energy generation and storage.

Installation Guide Needs Update

The installation guide could use an update to include more details. Once installed, this system runs reliably and provides robust power.

well-engineered for off grid system

I’ve installed dozens of off-grid systems and recently commissioned this one for a client. The equipment worked well together, which made the job easier on site.

The Growatt SPE 12000US carries the cETLus mark for UL 1741 and CSA C22.2 No. 107.1, and the GSL battery bank has ANSI/CAN/UL 9540 compliance. Those documents helped with the local electrical inspection, which went through without trouble. The inverter’s pure sine wave 120/240V split-phase output handled heavy motor starts, including deep-well pumps and workshop tools, without voltage sag.

The dual MPPT setup suited the 20-panel configuration, and communication between the Growatt inverter and GSL battery BMS worked on the first power-up. I also appreciated having the heavy-duty IMO disconnect switches included.

All the Canadian Solar 450W panels arrived undamaged. The frames were square, with no scuffs or shipping damage, and the kit included the mounting brackets and cables needed for this installation. From unpacking through commissioning, it was a straightforward job. I’d be comfortable recommending it for a homeowner’s off-grid project.

Customer Service

Mon-Sat, 9am-6pm EST.

Call Us

+1 800-858-4318 (toll-free)

Get in Touch

For general inquiries:

support@rocksolar.io

For shipping inquiries:

shipping@rocksolar.io

Address

115 Randall Dr Unit 9, Waterloo, ON N2V 1C5

555 Chabanel Ouest, #1541 PMB 1030, Montréal, QC H2N 2J2

Growatt 12kW Off-Grid Solar & Battery Kit – 9kW Panels (UL&CSA certified)

Description