Sol-Ark 18K Premium Hybrid Inverter | 18kW Continuous / 36kW Surge | 48V | Supports 40kW+ Solar | UL Certified | 10-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
Sol-Ark 18K Premium Hybrid Inverter | 18kW Continuous / 36kW Surge | 48V | Supports 40kW+ Solar | UL Certified | 10-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
Sol-Ark 18K Premium Hybrid Inverter | 18kW Continuous / 36kW Surge | 48V | Supports 40kW+ Solar | UL Certified | 10-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
Sol-Ark 18K Premium Hybrid Inverter | 18kW Continuous / 36kW Surge | 48V | Supports 40kW+ Solar | UL Certified | 10-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
Sol-Ark 18K Premium Hybrid Inverter | 18kW Continuous / 36kW Surge | 48V | Supports 40kW+ Solar | UL Certified | 10-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
Sol-Ark 18K Premium Hybrid Inverter | 18kW Continuous / 36kW Surge | 48V | Supports 40kW+ Solar | UL Certified | 10-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
Sol-Ark 18K Premium Hybrid Inverter | 18kW Continuous / 36kW Surge | 48V | Supports 40kW+ Solar | UL Certified | 10-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
Sol-Ark 18K Premium Hybrid Inverter | 18kW Continuous / 36kW Surge | 48V | Supports 40kW+ Solar | UL Certified | 10-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
Sol-Ark 18K Premium Hybrid Inverter | 18kW Continuous / 36kW Surge | 48V | Supports 40kW+ Solar | UL Certified | 10-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
Sol-Ark 18K Premium Hybrid Inverter | 18kW Continuous / 36kW Surge | 48V | Supports 40kW+ Solar | UL Certified | 10-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
Sol-Ark 18K Premium Hybrid Inverter | 18kW Continuous / 36kW Surge | 48V | Supports 40kW+ Solar | UL Certified | 10-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support
Sol-Ark 18K Premium Hybrid Inverter | 18kW Continuous / 36kW Surge | 48V | Supports 40kW+ Solar | UL Certified | 10-Year Warranty - ShopSolar: Complete Solar Kits + Lifetime Customer Support

Sol Ark  ·  Inverter/Charger

SKU: SOL-ARK-18K-2P

Sol-Ark 18K-2P Hybrid Inverter

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Power Through Anything with the Most Advanced Hybrid Inverter Available.

$6,298.00
$6,298.00
$8,999.00
You save $2,701.00
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Full manufacturer warranty

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Call 877-242-2792 and we’ll work it out with you. Mon–Thu 10am–5:30pm, Fri 10am–1pm EST.

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Specifications

The details.

Power Through Anything with the Most Advanced Hybrid Inverter Available

The Sol-Ark 18K-2P is the ultimate residential hybrid inverter for those who demand unmatched performance, flexibility, and reliability. Engineered to handle even the most extreme off-grid and backup scenarios, it delivers 18,000W of continuous power and up to 36,000W of surge capacity—perfect for large homes, critical systems, and demanding motor loads like HVAC units.

With support for over 40kW of solar input via AC coupling, this powerhouse enables massive energy harvesting while offering seamless grid integration, generator support, and full battery backup. Its American-engineered firmware, secure data handling, and UL-certified build ensure peace of mind and long-term dependability.

Key Features & Benefits:

  • ⚡ 18,000W Continuous / 36,000W Surge Power – Ideal for whole-home backup and high-demand loads

  • ☀️ Supports Over 40kW of Solar (AC Coupled) – Build massive arrays for maximum energy harvesting

  • 🔋 350A Battery Charger – Fast, efficient charging for large 48V battery banks

  • ⚙️ 3x MPPTs + 6x DC Inputs – Maximize solar efficiency and system flexibility

  • 🔁 200A Grid Pass-Through + 5ms Auto Transfer – Seamless switchover during outages

  • 🧠 Virtual Power Plant Ready + Time-of-Use Settings – Smart grid and off-grid compatible

  • 🔐 DataLock Secure Firmware – U.S.-based engineering and secure communications

  • 🔌 Generator Ready + Auto Start Capable – Integrated GEN port for additional resilience

  • 🛡️ UL1741, IEEE1547 & NEMA 3R Rated – Fully certified for residential use

  • 📦 DIY-Friendly Setup – Save thousands on install with included resources & support

  • 🧰 Stackable Up to 12 Units – Expandable for large residential or commercial needs

  • ✅ 10-Year Warranty + Legendary U.S. Support

User Manual / Documents:

SKU
Limitless 18K 2P-N
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
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
Nominal DC Voltage
48V
Operating Voltage Range
40 - 60V
Capacity
50 - 9900Ah
Continuous Battery Charge / Discharge Current
350A|
BMS Communication
CANBUS & RS485 MODBUS
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
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|

Questions & answers

Asked by shoppers, answered by our team.

1 question answered

I have 4 circuits coming down off my roof, circuit #1: has 1HOYMILES MI-300 MICRO INVERTERS, and 2 HOYMILES MI-1200 MICRO INVERTERS. Circuit #2 has: 1 HOYMILES MI-300 MICRO INVERTERS, and 2 HOYMILES MI-1200 MICRO INVERTERS. Circuit #3 has: 1 HOYMILES MI-300 MICRO INVERTERS, and 2 HOYMILES MI-1200 MICRO INVERTERS. Circuit #4 has: 1 HOYMILES MI-300 MICRO INVERTERS, 1 HOYMILES MI-600 MICRO INVERTERS, 2 HOYMILES MI-1200 MICRO INVERTERS going into 125A RATED COMBINER PANEL then over to 60A RATED NON-FUSED AC DISCONNECT

Asked by Robert edwards ·

Hi Robert, The Sol-Ark 18K does support AC-coupled solar, so it may be able to work with your existing Hoymiles microinverter array, but our team will need to confirm compatibility with your specific microinverters and setup. The 18K is rated for a Max. AC Coupled Input of 19,200W, with 18,000W continuous output, 36,000W surge (10s), 120/240 grid voltage and an integrated 200A AC output breaker. To check your array against that 19,200W limit, it helps to have the continuous AC output rating from the nameplate of each microinverter model (MI-300, MI-600 and MI-1200). Our team will then confirm whether the Hoymiles units can be AC coupled to the 18K and how your 125A combiner panel and 60A AC disconnect would tie in. Because this involves your home wiring and an existing grid-connected solar system, for help designing the system, call 877-242-2792 or email info@shopsolarkits.com.

Answered by ShopSolar team ShopSolar staff

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