20kW Hybrid Solar System with 21.6kW Solar & 28.68kWh Battery Storage

The ROCKSOLAR 20kW Hybrid Solar System is designed for large homes, farms, workshops, and light-commercial applications. It combines 2 × Growatt SPH10000TL-HU-US 10kW hybrid inverters, 36 × 600W solar panels, and 2 × 14.34kWh GSL LiFePO₄ batteries, delivering 21.6kW of solar capacity and 28.68kWh of battery storage.

For a balanced system design, each Growatt inverter is paired with one 14.34kWh battery and three dedicated solar-panel strings. Each SPH10000TL-HU-US provides three MPPT trackers, supporting this three-string-per-inverter architecture.

Key Features

• 2 × Growatt SPH10000TL-HU-US hybrid inverters
• 20kW combined inverter output
• 36 × 600W solar panels — 21.6kW total PV
• 2 × 14.34kWh GSL LiFePO₄ batteries
• 28.68kWh total battery storage
• 6 × 100 ft 10 AWG PV cable sets
• 120/240V split-phase output
• 6 MPPT trackers total
• Generator charging support
• <10ms backup transition
• DC-coupled and AC-coupled capability
• AFCI and Type II AC/DC surge protection
• Wi-Fi / 4G monitoring capability

Each Growatt inverter supports a 40–60V battery system, up to 200A charge/discharge current, and up to 10kW continuous battery charge/discharge power.

Balanced Dual-Inverter System Design

The system is divided into two matching power groups:

Inverter 1

• 1 × Growatt SPH10000TL-HU-US
• 1 × GSL 14.34kWh battery
• 3 solar-panel strings

Inverter 2

• 1 × Growatt SPH10000TL-HU-US
• 1 × GSL 14.34kWh battery
• 3 solar-panel strings

An inverter intercommunication cable is included to allow the two Growatt SPH inverters to communicate and operate together as part of the dual-inverter system

The exact number of panels per string should be finalized according. to the 600W panel's Voc, Vmp, Isc, temperature coefficient, and the inverter's MPPT limits before installation.

What's Included

• 2 × Growatt SPH10000TL-HU-US 10kW Hybrid Inverters
• 36 × 600W Solar Panels
• 2 × GSL 14.34kWh LiFePO₄ Batteries
• 6 × 100 ft 10 AWG PV Cable Sets
• Monitoring components
• System documentation

Solar Array: 21.6kW
Combined Inverter Output: 20kW
Battery Storage: 28.68kWh
PV Architecture: 3 strings per inverter / 6 strings total
Battery Architecture: 1 battery dedicated to each inverter
Total PV Cable: 600 ft
AC Output: 120/240V Split Phase

• 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.