SolaX X3-IES 15kW Three-Phase Hybrid Inverter

£1790.95

The SolaX X3-IES 15kW is the top-rated hybrid inverter in the series, built for large three-phase solar and battery installations in homes or commercial use.

15kW output for high-demand energy systems
Battery ready with high-voltage support
Built-in EPS for backup power supply

SKU: X3-IES-15K

Free and easy returns | Easy to Install | Professional Installers Available

Pallet Delivery *

SolaX X3-IES 15kW Hybrid Inverter: High-Capacity Three-Phase Solar Power With Battery Backup

Optimised for large-scale residential or small commercial solar systems, the SolaX X3-IES 15kW hybrid inverter supports robust solar production and energy storage. This top-tier model offers powerful performance, high efficiency, and EPS emergency backup support as standard.

Large-Scale Power Output With Battery Integration

Ideal for users with high energy demands or larger PV arrays, the 15kW version accommodates up to 22.5kWp solar input and integrates with high-voltage lithium batteries.

Max. PV input: 22.5kWp
Battery voltage range: 80V–600V
Efficiency: up to 98.2%

Built-In Emergency Power Supply (EPS)

EPS ensures critical loads continue running during power outages by switching seamlessly to battery power.

EPS rated at full 15kW output
Reliable backup for homes or business-critical systems

Cloud-Based Monitoring for Full Visibility

Included WiFi module allows access to live data via the SolaX Cloud. View system output, battery charge levels and grid export status from your mobile or desktop.

Remote access & diagnostics
App control for easy monitoring

Why Evergy Recommends This Product

Handles the most demanding three-phase solar + storage installations
Battery-ready with EPS support and premium performance
10-year warranty for peace of mind

Explore Other Models in the Range

This 15kW model is the largest in the X3-IES range. If you’re after lower power options, see:

Or learn more from the official SolaX X3-IES product page.

Delivery

Qualifies for free UK delivery. Larger quantities may require pallet shipping. See the delivery tab for more details.

Order Online or Call to Discuss

Get the right inverter for your large-scale energy setup. Need help deciding? Call our expert team on 01844 393939.

Attribute name	Attribute value
Other Features	Robust performance in varied conditions
IP Rating	IP66
Backup Power	<10ms switchover, 200% EPS overload
Power Rating	15kW
Design	Modular, plug-and-play
PV Oversizing	Max 200%
MPPT Input	Max 20A per tracker (2 MPP trackers)
Energy Management	AI-driven, 3-phase unbalanced output, smart scheduling

X3-IES-15K

SOLAX

Established in 2012, SolaX is an internationally renowned provider of photovoltaic energy storage systems. They offer energy storage inverters, batteries, and grid-connected solutions to customers worldwide. SolaX ranks among the top three globally in market share for household photovoltaic energy storage systems.

Free delivery -

NEXT DAY Delivery to Oxfordshire, Buckinghamshire and London via an EVERGY vehicle. Max of 1 ton weight.

Other delivery options via courier -

FREE NEXT DAY (*orders over £50, some batteries and inverters will require an additional fee) via FEDEX. Monday to Friday, up to 30kg, Max box size 50cm x 50cm x 50cm (volume). Orders must be received by 2pm.

Anytime NEXT DAY delivery – under £50 = £6.50 (depending on location, weight and size)

Regardless of spend, additional to any of the above charges –

Before noon (FedEx Priority Express) = Guide Price £15.00 (calulated at checkout)

Before 10am (FedEx First) = Guide Price £20.00 (calulated at checkout)

Delivery of pallets -

Palletised deliveries – Prices starting at £58

Multiple pallet orders can be quoted upon request (price dependent on number of pallets and postcode area)

Special delivery items may vary (non-stock products).

SAME DAY COLLECTION - Click & collect from Evergy Stores (Thame, Oxfordshire).