EG4

EG4 18kPV Hybrid Inverter (1511104)

$4,898.00

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The EG4 18kPV is EG4’s flagship residential hybrid solar inverter, combining 18kW of PV input with 12kW of continuous AC output in a compact, transformer-free design. An all-in-one solution that integrates charge controller, inverter, and transfer switch functions — eliminating the need for separate components and reducing both material cost and installation complexity on residential and light commercial projects.

Certifications & Compliance

UL 1741 Listed | UL 1741 SA (Grid Support) | NEMA-3R Enclosure | 10-Year Manufacturer Warranty | NEC Rapid Shutdown Compliant

The 18kPV operates across grid-tied, off-grid, and battery backup modes with seamless mode switching. Its 120/240V split-phase output and NEMA 4X/IP65 weatherproof enclosure make it suitable for standard residential panel configurations and outdoor mounting in all climates. Certifications include ETL and cETL to UL, CSA, IEEE, and NEC standards, satisfying AHJ requirements across the United States and Canada.

Continuous Output: 12kW (120/240V split-phase)
Solar Input: 18kW PV input capacity
Battery Voltage: 48V with closed-loop communication for compatible batteries
Transfer Time: Fast automatic transfer for seamless backup switching
Scalability: Stackable for greater combined output capacity
Enclosure: NEMA 4X / IP65 — fully outdoor rated
Certifications: ETL, cETL (UL, CSA, IEEE, NEC compliant)
Monitoring: Remote monitoring via EG4 app and web portal; live data, historical performance, remote firmware updates
Display: LCD interface for on-site configuration of charging priority, voltage, and output settings

The 18kPV pairs seamlessly with the EG4 WallMount 280Ah All Weather Battery for a fully integrated whole home battery backup system. Its plug-and-play installation, LCD-guided setup, and remote monitoring capabilities reduce commissioning time on the job site. Compatible with the EG4 GridBOSS MID for advanced load management and panel backup applications. A top-selling hybrid inverter choice for installers prioritizing performance, certification compliance, and competitive pricing.

Why Buy From Solwel?

Free Shipping on Orders Over $10,000 — Fast fulfillment from our Houston and Dallas warehouses
Authorized Distributor — Genuine manufacturer-backed products with full warranty support
Expert Technical Support — Our team knows these products inside and out. Call us at (346) 432-4228
Installer Pricing Available — Contact us for volume pricing and contractor accounts
Stocked in Texas — Reduced lead times for Southwest and national projects

Frequently Asked Questions — EG4 18kPV Hybrid Inverter

What is a hybrid inverter?

A hybrid inverter combines a solar inverter, battery charger, and automatic transfer switch in one unit. The EG4 18kPV can power your home from solar, charge connected batteries, and automatically switch to battery backup during a grid outage — all without manual intervention.

Does the EG4 18kPV work without batteries?

Yes. The EG4 18kPV operates in grid-tied solar-only mode without batteries. You get solar savings immediately and can add battery storage later. Note: without batteries, the inverter cannot provide backup power during a grid outage.

Can the EG4 18kPV operate off-grid?

Yes. The EG4 18kPV supports full off-grid operation with a compatible battery bank, capable of powering your home entirely from solar and stored energy.

What batteries are compatible with the EG4 18kPV?

The EG4 18kPV is natively compatible with EG4 batteries and also supports many third-party LFP batteries via CAN/RS485 communication. Contact us at (346) 432-4228 to confirm compatibility with a specific battery.

What certifications does the EG4 18kPV carry?

The EG4 18kPV is UL 1741 listed, meeting U.S. grid interconnection requirements. Always verify local utility interconnection requirements with your installer.

EG4 18kPV Hybrid Inverter (1511104)

Why Buy From Solwel?

Frequently Asked Questions — EG4 18kPV Hybrid Inverter

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