Sol-Ark 18K-2P 18kW Hybrid Solar Inverter – Whole-Home Backup, 48V Battery, Grid-Tie & Off-Grid Power

Sol-Ark 18K-2P 18kW Hybrid Solar Inverter – Whole-Home Backup, 48V Battery, Grid-Tie & Off-Grid Power

The Sol-Ark Premium 18K-2P Hybrid Inverter is one of the most powerful residential energy solutions on the market, engineered for homeowners who demand maximum performance, full home backup, and complete energy independence. Delivering an industry-leading 18kW of continuous power with a massive 36kW surge capacity, this all-in-one system effortlessly powers large homes, heavy appliances, HVAC systems, and critical loads—even during extended grid outages. Designed to integrate solar panels, battery storage, grid power, and generators into a single intelligent platform, the 18K-2P maximizes efficiency while simplifying installation and system design.

Built for flexibility and future-proof performance, the 18K-2P supports grid-tied, off-grid, and hybrid configurations, making it ideal for both new installations and system upgrades. Its battery-agnostic 48V design ensures compatibility with a wide range of lithium and lead-acid batteries, while advanced energy management features optimize power usage based on time-of-use rates and system demand. Whether your goal is to eliminate outages, reduce energy bills, or build a fully independent solar power system, the Sol-Ark 18K-2P delivers unmatched reliability, scalability, and control.

Key Features

• True whole-home backup (no subpanel required)
• Most powerful residential hybrid inverter in its class
• 200A pass-through simplifies installs and reduces cost
• Built-in MPPT solar charge controllers (3 channels)
• Time-of-use optimization + smart energy management
• Generator integration with auto-start capability
• Battery-agnostic 48V architecture
• Virtual Power Plant (VPP) ready system
• Parallel capability (stack up to 12 units)
• Advanced remote monitoring via MySol-Ark platform

This inverter is ideal for:

• Homeowners needing full home backup (not partial)
• High-energy users (large homes, EV owners, HVAC loads)
• Off-grid or rural property owners
• Customers upgrading to solar + battery storage systems
• Buyers focused on energy independence and long-term savings

General Specifications

• Brand: Sol-Ark
• Model: Premium 18K-2P (Limitless 18K-2P-LV)
• Product Type: Hybrid Solar Inverter
• Application: Whole-home solar + battery energy systems

Electrical Specifications

• Continuous Output Power: 18kW
• Surge Power: 36kW (10 seconds)
• Solar Input Capacity: up to ~32.4kW DC / 40kW+ AC coupled
• Battery Voltage: 48V
• Output Voltage: 120/240V split phase (208V capable)
• MPPT Trackers: 3 (up to 6 string inputs)
• Max DC Input Voltage: 500V
• Grid Pass-Through: 200A

Performance Specifications

• Peak Efficiency: ~97%
• Transfer Time: ~5 ms (UPS-grade)
• Battery Charge/Discharge Current: up to ~350A

Mechanical Specifications

• Installation: Indoor / Outdoor (NEMA 3R / IP65 rated)
• Dimensions: approx. 34 × 18 × 11 in
• Weight: ~130–140 lbs

Certifications

• UL1741
• IEEE 1547
• NEM 3.0 ready

Warranty

• Standard 10-year manufacturer warranty

Applications

• Whole-home solar + battery backup systems
• Residential grid-tied solar installations
• Off-grid homes and remote properties
• Solar + EV charging systems
• High-demand homes (HVAC, pumps, large loads)
• Microgrid and energy resilience projects
• Commercial light-duty solar systems
• Agricultural and rural energy systems
• Backup power for critical infrastructure
• Energy cost optimization systems