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Sitewide SALE: 100 OFF on select brands + Free Shipping* on select items. Price Match Guarantee on all products. Some exclusions apply.
Sitewide SALE: 100 OFF on select brands + Free Shipping* on select items. Price Match Guarantee on all products. Some exclusions apply.

Sol-Ark 18K-2P Hybrid Inverter

by Sol-Ark
SKU 18K-2P
Save 29% Save 29%
Original price $9,870.00
Original price $9,870.00 - Original price $9,870.00
Original price $9,870.00
Current price $6,970.00
$6,970.00 - $6,970.00
Current price $6,970.00
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  • In stock. Ships in 1 to 2 business days
  • Typical delivery 4 to 7 days*
  • Price Match Guarantee. We beat verified prices
  • 30 day returns on eligible items
  • Manufacturer warranty included
  • No sales tax in most states*

Questions? Text or call +1 (307) 248-7227

*Exclusions apply. See Shipping and Returns.

Price Match Guarantee at OffGrid Lux

At OffGrid Lux, we're committed to offering you the best prices online. That's why we have a Price Match Guarantee in place. If you find a lower price for the same product elsewhere, we'll match or beat it to ensure you get the best value.

For full details on our Price Match Guarantee, including eligibility criteria and how to request a price match, please click here to view our complete policy.

Shipping & Order Policy at OffGrid Lux

When you place an order, we confirm stock availability before charging your card. Orders typically process within 1-2 business days, and shipping is fast—most orders arrive within 4-7 days. We use reliable third-party carriers and provide tracking information promptly.

For more details, click here to view our full Shipping Policy.

Refunds & Returns at OffGrid Lux

We're committed to your happiness with every purchase. Need assistance? Just reach out. You have 30 days from delivery to return items in their original condition. We process refunds promptly, usually within 3 business days of receiving your return.

For more info, check out our full Returns & Refunds Policy here.

Sol-Ark 18K-2P Hybrid Inverter

The Sol-Ark 18K-2P Hybrid Inverter is a powerful, whole-home energy solution designed for grid-tied, off-grid, or hybrid solar systems. With 18kW of power, advanced load management, and seamless grid or generator integration, this inverter keeps your home running during outages while optimizing energy savings year-round. Its all-in-one design simplifies installation and reduces equipment costs, making it one of the most user-friendly hybrid inverters available.

Sol-Ark 18K-2P Hybrid Inverter Features

Whole Home Backup – Supports up to 18kW continuous output for powering your entire home during grid outages.

Grid-Tied + Off-Grid Ready – Flexible design supports grid-tied solar with battery backup, full off-grid systems, or hybrid setups.

High Efficiency – Industry-leading 97.6% efficiency rating reduces wasted energy and maximizes your solar investment.

Scalable Energy Storage – Compatible with a wide range of lithium and lead-acid batteries for flexible backup capacity.

Built-In MPPT Solar Charge Controllers – Up to 26kW PV array input, optimizing solar power production in real time.

Rapid Shutdown Ready – Fully compliant with NEC 2017/2020 rapid shutdown safety requirements.

Easy Installation & Monitoring – Compact wall-mounted design with intuitive touchscreen display and remote monitoring via app or web.

Sol-Ark 18K-2P Hybrid Inverter Applications

  • Whole-home backup – Keep essential appliances and your entire home powered during outages.
  • Grid-tied solar with battery backup – Maximize solar savings while protecting against blackouts.
  • Off-grid living – Provide reliable, independent power for remote properties or cabins.
  • Commercial applications – Ideal for small business energy resilience and cost reduction.
  • EV charging support – Power your electric vehicles directly from solar or stored battery energy.

What's Included

Everything you need is included with your product.

  • 1 x Sol-Ark Limitless 18K-2P-LV inverter
  • 1 x French Cleat
  • 10 x Filter Rings
  • 1 x CAT 5E Communication Cable
  • 1 x Allen Keys (4mm and 8mm)
  • 1 x Temperature Sensor
  • 1 x Wi-Fi / Ethernet Antenna (Dongle)
  • 2 x 300A (Ø1.378”) Current transformers (CT sensors)
  • User manual

Warranty

  • 10 years of Warranty

Sol-Ark 18K-2P Hybrid Inverter Specifications

Input Data (PV)

Specification Details
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)

Specification Details
Continuous Power 18,000W
Surge Power (10s) 36,000W
Grid Voltage/ Frequency 120/240; 208 0.88Un<U<1.1Un / 55-65
Max. Output Current 75A
Max. Grid Passthrough Current 200A
Max Efficiency 97.6%
Stackable Yes; Max 12

Battery Input Data (DC)

Specification Details
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

Specification Details
Dimensions [H x W x D (mm)] 863 x 464 x 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

Specification Details
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 II

Frequently-Asked Questions

How much solar can I connect to the Sol-Ark 18K-2P?

The inverter supports up to 26kW of solar PV input, allowing you to oversize your solar array to maximize energy harvest.

Can I run my whole house on this inverter?

Yes. With 18kW continuous output and surge capacity, the 18K-2P can power a full home, including large appliances and HVAC systems.

Is this inverter compatible with different battery types?

Absolutely. It works with a variety of 48V lithium batteries (like LiFePO4) and lead-acid batteries, making it flexible for new or existing systems.

Does the inverter work during a grid outage?

Yes. The Sol-Ark 18K-2P provides instant switchover to battery backup, keeping your home running without interruption.

Can I monitor my system remotely?

Yes. Sol-Ark offers an intuitive app and web platform so you can track solar production, battery state of charge, and system status in real time.

Free Shipping & No Tax to the United States

Enjoy Free Shipping on Orders Over $200. No Sales Tax (Excludes WY).

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Questions? Give us a call +1(307) 248-722

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