40kW Hybrid Off-Grid Solar System | 43.2kW Solar + 81.92kWh Battery | ROCKSOLAR

Premium 40kW high-voltage hybrid solar system featuring 2 x Isuna U20K-POH 20kW 120/240V split-phase inverters, 72 x Philadelphia Solar 600W N-type panels for 43.2kW of PV, and 2 x GSL R40K 40.96kWh LiFePO4 battery systems for 81.92kWh of nominal storage. Designed for large homes, farms, workshops, estates, and remote commercial properties with eight MPPTs, four independent HV battery ports, dedicated generator integration, strong motor-starting capability, and rugged IP66/NEMA 4X inverter construction.

Key System Features

• 40kW total continuous inverter capacity
• 2 x Isuna U20K-POH 20kW HV hybrid inverters
• 120/240V split-phase output
• 72 x Philadelphia Solar 600W N-type panels
• 43.2kW total solar array
• 2 x GSL R40K 40.96kWh HV batteries
• 81.92kWh total nominal battery storage
• 409.6V nominal battery voltage per R40K system
• 8 total MPPT trackers
• Up to 60kW aggregate PV capability across both inverters
• 4 independent battery ports total
• Dedicated high-capacity generator inputs
• Strong overload and motor-starting capability
• High-voltage battery architecture
• Fast <8ms off-grid transfer
• IP66 / NEMA 4X inverter construction
• Wi-Fi, LAN, 4G, Bluetooth, CAN, and RS485 connectivity

• 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.