GO GREEN! LOWER CARBON!
Sol-Ark 18K 48V All-In-One Hybrid Inverter INDOOR/OUTDOOR Solar Inverter Solar Power System 120V/240V split phase and 120V/208V 3 phase Compatible with LINIOTECH 10 KWh 200Ah LiFePO4 Lithium Battery
Sol-Ark 8K recommended to pair with 20 kwh to 30 kwh each inverter for best performance and life cycle.
Sol-Ark 12K recommended to pair with 20 kwh to 40 kwh each inverter for best performance and life cycle.
Sol-Ark 15K recommended to pair with 20 kwh to 40 kwh each inverter for best performance and life cycle.
Sol-Ark 18K recommended to pair with 30 kwh to 50 kwh each inverter for best performance and life cycle.
⚡ Power Through Anything with the Best Hybrid Solar Inverter for Home & Off-Grid Systems
The Sol-Ark 18K-2P Hybrid Inverter is the most advanced residential solar inverter engineered for whole-home backup power, off-grid energy systems, and grid-tied solar installations. Designed and built in the USA, this inverter delivers unmatched performance, efficiency, and reliability for homeowners and installers who demand the best.
With 18,000W continuous output and up to 36,000W surge power, it easily runs large homes, HVAC systems, pumps, and critical appliances. The Sol-Ark 18K-2P supports over 40kW of solar input (AC-coupled)—making it ideal for both energy independence and maximum solar production.
Whether you’re building a battery-backup system, expanding a solar-plus-storage project, or preparing for grid outages, this UL1741-certified hybrid inverter offers smart grid support, generator auto-start, and VPP (Virtual Power Plant) compatibility.
? Sol-Ark 18K-2P Key Features & Benefits
✅ 18,000W Continuous / 36,000W Surge Output
Power entire homes, air conditioners, and heavy-load appliances with confidence.
✅ Supports Over 40kW of Solar (AC-Coupled)
Maximize solar generation and connect large PV arrays for peak efficiency.
✅ 350A Smart Battery Charger
Fast-charge any 48V LiFePO4 or lithium-ion battery bank with intelligent control.
✅ Triple MPPT + 6 DC Inputs
Flexible string configurations for optimal solar yield in any environment.
✅ 200A Grid Pass-Through + 5ms Auto Transfer
Instant, seamless transition during power outages—no flicker, no downtime.
✅ VPP Ready & Time-of-Use Programming
Save on energy costs and participate in smart grid demand response programs.
✅ Secure U.S.-Engineered Firmware
Built with DataLock encryption and U.S.-based firmware for data privacy and reliability.
✅ Generator Auto-Start & Integration
Automatically triggers generator backup when battery levels drop.
✅ UL1741, IEEE1547, NEMA 3R Certified
Fully compliant and outdoor-rated for residential and light commercial installations.
✅ Stackable up to 12 Units
Expand easily to 216kW for large homes or commercial applications.
✅ DIY-Friendly Setup & U.S. Support
Save installation costs with easy setup, resources, and technical support.
✅ 10-Year Warranty & Proven Reliability
Peace of mind with the industry’s best warranty and legendary Sol-Ark service.
? Downloads & Documentation
? Perfect For:
-
Whole-home backup power systems
-
Off-grid cabins and remote properties
-
Solar-plus-storage installations
-
Energy independence and grid-tied resilience
-
Commercial and light industrial applications
Product Specifications:
| SKU | Limitless 18K 2P-N |
| Input Data (PV) | |
| Max. Supported PV Power | 32,400W |
| Max. Usable PV Power | 28,800W |
| Max. AC Coupled Input | 19,200W |
| Rated MPPT Operating Voltage Range | 150- 425V |
| Startup Voltage | 125V |
| Max. DC Input Voltage | 500V |
| Max. Operating Input Current per MPPT | 36A |
| Max. Short Circuit Current per MPPT | 54A |
| No. of MPPT/Inputs | 3/2 |
| Output Data (AC) | |
| Continuous Power | 18,000W |
| Surge Power (10s) | 36,000W |
| Grid Voltage/ Frequency | 120/240; 208 0.88Un |
| Max. Output Current | 75A |
| Max. Grid Passthrough Current | 200A |
| Max Efficiency | 97.6% |
| Stackable | Yes; Max 12 |
| Battery Input Data (DC) | |
| Nominal DC Voltage | 48V |
| Operating Voltage Range | 40 - 60V |
| Capacity | 50 - 9900Ah |
| Continuous Battery Charge / Discharge Current | 350A| |
| BMS Communication | CANBUS & RS485 MODBUS |
| General Data | |
| Dimensions [H x W x D (mm)] | 863 × 464 × 282 mm |
| Weight | 62.4 Kg / 137 lb. |
| Enclosure | IP65 / NEMA 3R |
| Ambient Temperature | 40-+60°C, > 45°C Derating |
| Operating Altitude | 3000 m （9843 ft） |
| Noise | < 50 dB |
| Standard Warranty | 10 Years |
| Protection and Certifications | |
| Certifications and Listings | UL1741 3rd SB, UL1741 CRD-PCS, IEEE1547-2018 and interoperability using IEEE2030.5, Hawaiian Electric SRD V2.0, UL1699B PVDC AFCI, UL1998, CSA C22.2 No. 107 |
| PV DC Disconnect Switch | Integrated |
| Ground Fault Detection - NEC 690.5 | Integrated |
| AC Output Breaker - 200A | Integrated |
| Surge Protection | DC Type II / AC Type I| |
The Sol-Ark 18K-2P is a powerful, all-in-one hybrid inverter designed for whole-home and commercial solar energy systems. With 18,000W continuous output and 36,000W surge capacity, it supports grid-tied, off-grid, and battery backup configurations—making it one of the most versatile solar inverters on the market.
This split-phase inverter is compatible with a wide range of 48V battery types, including lithium, AGM, and lead-acid, and features AC coupling for maximum system flexibility. Its 3 MPPT inputs support up to 28,800W of PV input, with a high-efficiency rating of 97.6%, ensuring you capture and use as much solar power as possible.
The Sol-Ark 18K-2P includes built-in rapid shutdown, arc fault protection, and monitoring, simplifying installation and reducing soft costs. It’s a complete energy management system in one compact unit—ideal for backup power, grid independence, or energy savings.
SA-18K Features:
- 18kW continuous power / 36kW surge
- Split-phase output (120/240V)
- Compatible with lithium, AGM, and lead-acid batteries
- AC & DC coupling supported
- 3 MPPTs with up to 28,800W PV input
- Built-in monitoring, arc fault protection, and rapid shutdown
- Supports zero-export, time-of-use, and generator integration
- High efficiency: 97.6%
- UL 1741 SA & IEEE 1547 compliant
SA-18K Specifications:
- Inverter Type: Hybrid (grid-tie, off-grid, battery backup)
- Output Power: 18,000W continuous / 36,000W surge
- Battery Voltage: 48V
- MPPT Inputs: 3
- Max Usable PV Input Power: 28,800W
- Efficiency: 97.6%
- Weight: 137 lbs
- Dimensions (H x W x D): 33.97" x 18.3" x 11.1"
“best hybrid inverter for home,” “off-grid solar inverter,” “whole-home backup inverter,” “AC-coupled hybrid inverter,” “solar battery backup system,” “LiFePO4 compatible inverter,” “UL1741 certified solar inverter,” “smart grid ready inverter,” “Sol-Ark 18K-2P review,” “residential solar inverter USA.”
