The Growatt SPH 11500TL-HU-US is a 11.5kW 120/240V split-phase hybrid solar inverter for residential solar, low-voltage battery storage and backup power in the United States. Build a residential solar and battery backup system around an 11.5kW inverter with room for up to 23kW of recommended PV capacity. Three independent MPPT trackers support flexible solar-array design, while DC-coupled, AC-coupled and AC-retrofit applications provide options for new systems and storage upgrades. Why choose the Growatt 11.5kW hybrid inverter? 11,500W rated AC and backup output: Plan around the inverter&';s continuous power rating and your actual household loads. Up to 23,000W recommended solar input: A 2.0 DC/AC ratio allows PV array oversizing within the specified voltage, current and per-MPPT limits. Three MPPT trackers: Two PV strings per tracker, with up to 40A operating input current per MPPT. Fast backup transition: The specification table lists a transfer time below 10ms and 200% full-load overload capability for 10 seconds. Low-voltage battery connection: Supports a 40-60V battery range with up to 240A charge/discharge current. Generator integration: Supports charging from a compatible diesel generator; maximum generator input power is 30kW. Expandable system design: Supports up to six units in parallel, subject to the manufacturer&';s installation requirements. 10-year manufacturer warranty: As listed in the supplied Growatt datasheet. Solar storage and home backup Use the SPH 11500TL-HU-US to manage energy from solar panels, compatible batteries, the utility grid and a compatible generator. The datasheet lists a maximum grid passthrough current of 200A. Passthrough current is separate from the inverter&';s 11.5kW output rating; battery capacity, battery current limits and connected loads determine available backup power and runtime. Lithium and lead-acid battery types are listed. Confirm the exact battery model against Growatt&';s approved battery list, including CAN/RS485 communication and current requirements. The inverter is sold separately from batteries, solar panels and installation services unless explicitly included in your order. Technical specifications: Growatt SPH 11500TL-HU-US Specification Rating Model SPH 11500TL-HU-US Rated AC / backup output 11,500W Maximum AC apparent power 11,500VA Maximum recommended PV power (STC) 23,000W Maximum PV input per MPPT 12,000W MPPT trackers / strings per MPPT 3 / 2 Maximum DC voltage / startup voltage 550V / 100V Maximum input / short-circuit current per MPPT 40A / 50A Nominal AC input voltage 120/240V Nominal AC output 120/208V or 120/240V split-phase; 60Hz Maximum AC output current 47.9A Maximum grid passthrough current 200A Maximum generator input power 30,000W Battery voltage range 40-60V Maximum battery charge / discharge current 240A Continuous battery charge / discharge power 11,500W Battery communication CAN / RS485 Backup transfer time Less than 10ms Backup overload capability 200% full load for 10 seconds Peak / CEC / MPPT efficiency 98.1% / 97.0% / 99.9% Maximum parallel units 6 Enclosure protection IP65 Dimensions (W x; H x; D) 516 x; 870 x; 308.8mm Net / gross weight 63kg / 74kg Operating temperature -25AdegC to 60AdegC; derating above 45AdegC Typical noise 50dB Display / connectivity LCD touch screen; WiFi / LAN Manufacturer warranty 10 years Protection and installation The IP65 enclosure includes Type II surge protection on the DC and AC sides. The datasheet also lists AFCI, anti-islanding, ground-fault, insulation-resistance and residual-current monitoring protections. Rated operating temperature is -25AdegC to 60AdegC, with power derating above 45AdegC. System design must follow the current installation manual and applicable electrical requirements. Confirm local utility interconnection acceptance, equipment approvals, battery compatibility and site conditions before installation. The supplied datasheet lists UL1741, UL1741SA/SB, CSA C22.2 and other standards; it does not establish approval for every US installation. Frequently asked questions Does this inverter provide 120/240V split-phase power? Yes. The datasheet lists 120/240V split-phase output and also lists 120/208V operation for supported configurations. Confirm the intended configuration during system design. How much solar can I connect? The maximum recommended PV array is 23,000W at STC. Each MPPT is limited to 12,000W, 40A input current and 50A short-circuit current. Array voltage must remain within the manufacturer&';s specified operating range and 550V absolute maximum. Does 11.5kW describe battery capacity? No. 11.5kW is the rated power output. Battery energy is measured in kWh and is selected separately to meet your desired backup runtime. What is the warranty? The supplied Growatt SPH 9600-18000TL-HU-US datasheet specifies a 10-year warranty. Coverage is subject to the manufacturer&';s applicable warranty terms. Find the right Growatt system Browse hybrid inverters, residential off-grid inverters and Growatt inverters, batteries and accessories. Contact ROCKSOLAR for help selecting compatible storage and planning your system.