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All-In-One Pre-Wired Hybrid Inverter · 48V · 18,000W
Built for the toughest off-grid and backup demands, the 18K 2P-N inverter delivers class-leading continuous battery power to run heavy electrical loads with ease. With 36 kW of surge capacity for up to 10 seconds, it starts HVAC systems and high-torque motors effortlessly during outages.
Supporting over 40 kW of PV input through AC-coupled functionality, it outperforms any other residential inverter in its class. This powerhouse operates on U.S.-engineered firmware, secures your data locally, and includes a standard 10-year warranty.
Take control of your energy - don't depend on the grid.
Delivers up to 18kW of continuous power directly from battery storage.
Provides 36kVA of surge power for 10 seconds, ensuring HVAC units, compressors, and motors start smoothly during outages.
Supports over 40kW of solar input when using AC-coupled functionality - more than any other residential inverter.
Designed for off-grid, on-grid, and backup power applications with seamless transition.
Engineered to handle the most demanding off-grid and backup conditions for homes and businesses.
Developed with American technology for superior reliability and optimized performance.
Keeps all operational data stored domestically for enhanced privacy and compliance.
Backed by a 10-year standard warranty for lasting peace of mind.
Enables full control of your home's energy production, storage, and backup capability.
PV / Solar Input
| Max. usable PV power | 28,800 W |
| Max. AC coupled input | 19,200 W |
| Rated MPPT operating voltage range | 150–425 V |
| Startup voltage | 125 V |
| Max. DC input voltage | 500 V |
| Max. operating input current per MPPT | 36 A |
| Max. short circuit current per MPPT | 54 A |
| No. of MPPT trackers | 3 |
| No. of PV strings per MPPT | 2 |
AC Output
| Continuous power | 18,000 W |
| Surge power (10s) | 36,000 W |
| Nominal AC voltage | 120/240V; 208V ± 8% Un |
| Grid frequency | 60 / 55-65 Hz |
| Output current (continuous) | 75 A |
| Max. grid passthrough current | 200 A |
| Max efficiency | 97.6% |
| Stackable | Yes – up to 12 units |
Battery
| Nominal DC voltage | 48 V |
| Operating voltage range | 40–60 V |
| Capacity | 50–9,900 Ah |
| Continuous battery current | 350 A |
| Battery disconnecting means | 200A/pole × 2 |
| Charging controller | 3-Stage with equalization |
| Automatic generator start (AGS) | 2-Wire start – integrated |
| BMS communication | CANBus & RS485 MODBUS |
Physical, Environmental & Certifications
| Dimensions (H×W×D) | 863 × 464 × 282 mm |
| Weight | 62.4 kg / 137 lb |
| Enclosure | IP65 / NEMA 3R |
| Ambient temperature | -40°C to +60°C; >45°C derating |
| Operating altitude | 3,000 m (9,843 ft) |
| Noise | < 50 dB |
| Communication & monitoring | Wi-Fi & LAN hardware included |
| Standard warranty | 10 years |
| Certifications | UL1741 3rd SB, UL1741 CRD-PCS, IEEE1547-2018, IEEE2030.5, Hawaiian Electric SRD V2.0, UL1699B PVDC AFCI, UL1998, CSA C22.2 No. 107 |
As electricity prices climb, grid reliability declines, and demand for energy independence grows, homeowners are redefining what they expect from solar power systems.
Leading this evolution is the Sol-Ark® 18K-2P (18K-2P-N) hybrid inverter - a next-generation solution built for resilience, performance, and total control.
Engineered for the toughest off-grid and backup conditions, the 18K-2P delivers up to 18kW of continuous power from battery storage, easily handling large household loads. With 36kVA of surge capacity for up to 10 seconds, it starts heavy equipment like HVAC systems and motors effortlessly - even in full grid-outage scenarios.
Supporting more than 40kW of PV input when AC-coupled, the 18K-2P outperforms every other residential inverter on the market. Powered by American-engineered firmware, designed with secure U.S.-based data handling, and backed by a 10-year standard warranty, this powerhouse gives homeowners the confidence to break free from grid dependence and own their energy future.
Free shipping on all orders within the mainland US (Hawaii, Alaska and overseas territories excluded - a freight forwarder is required). Orders ship directly from our brand partners' warehouses across the U.S. Order confirmation is emailed immediately; if an item is unexpectedly backordered we notify you before your card is charged. In-stock items are processed within 1-4 business days (cut-off 4:00 PM EST), transit is 3-6 business days, and tracking is emailed within 24 hours of shipment. Typical delivery is 4-10 business days from purchase. Minimum order value is $69.
You have 30 days from the delivery date to initiate a return (35 days for orders placed Nov 25-30 and Dec 25-31). Items must be unused, in original packaging with tags attached, and returns require prior authorization from our team.
To start a return: +1 (307) 317-7213, hello@ecosolarkits.com, or live chat. Read the full return and refund policy
