SolaX X1 Mini G4 1.5kW Single Phase String Inverter

£183.60

The SolaX X1 Mini G4 1.5kW is a compact, high-efficiency single-phase string inverter for small UK residential PV systems and light-commercial sites. With a low 70V start-up and a wide 55–380V MPPT window, it maintains strong yield through typical British low-light conditions and mixed orientations. Peak conversion efficiency up to 97.3% helps maximise generation where roof space is limited.

A robust IP65 enclosure and fan-free cooling ensure quiet, reliable operation for external walls, garages, or utility rooms. Safety and compliance are built in, meeting EN 62109 and UK G98 requirements. Connectivity is straightforward via optional Wi-Fi or LAN for SolaX Cloud monitoring, with RS485 and DRM interfaces supporting professional metering and control.

Complete your system with quality solar panels and proven mounting hardware from Evergy for a dependable photovoltaic installation.

Contact Evergy for product guidance or system compatibility support.

SKU: X1-MINI-1.5K-G4

Qty:

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

The SolaX X1 Mini G4 1.5kW Single Phase String Inverter brings modern control and dependable conversion to compact UK PV systems. As part of the X1 Mini G4 Series, it’s optimised for small domestic rooftops and light-commercial installs where high yield, quiet running and straightforward commissioning matter.

Advanced Single-Phase Engineering for Modern UK Homes

With peak efficiency up to 97.3%, the X1 Mini G4 1.5kW converts more of your rooftop generation into usable energy. A wide 55–380V MPPT operating window and precise tracking maximise production across mixed orientations and under changeable British skies. The low 70V start-up voltage allows generation to begin earlier each morning, improving daily yield on smaller arrays.

Engineered for Long-Term Performance & Safety

A durable IP65 enclosure protects the electronics against rain and dust, while fan-free natural convection keeps acoustic output to around 25dB — ideal for external walls, garages or utility rooms. Built-in protection includes insulation monitoring, residual-current safeguards and surge protection to support safe operation. The unit meets UK G98 requirements and EN 62109 safety standards, helping installers deliver compliant systems with confidence.

Key Features

High conversion efficiency up to 97.3% for better energy harvest
Wide 55–380V MPPT range for low-light and split-roof layouts
IP65 weatherproof, fan-free design for quiet, low-maintenance use
Lightweight construction for easy wall mounting on tight sites
Optional Wi-Fi/LAN modules for SolaX Cloud performance monitoring
Compliance with G98 and EN 62109 for UK grid connection

If you’re wondering how the X1 Mini G4 1.5kW performs during typical UK low-light periods, the combination of a low start-up voltage and responsive MPPT tracking helps sustain generation through cloudy spells and early mornings, supporting steadier daily output on compact arrays.

Specification data verified from SolaX Power X1 Mini G4 datasheet (v1.1).

Seamless Integration with Solar Panels & Battery Systems

The SolaX X1 Mini G4 1.5kW inverter integrates effortlessly with premium solar panels and scalable battery storage options. Its single MPPT configuration is ideal for compact rooftops or uniform pitch arrays, providing efficient control without unnecessary complexity. When paired with compatible SolaX battery systems, it supports flexible DC coupling for improved self-consumption and reduced export to the grid — ideal for smaller domestic homes seeking energy independence.

Smart Monitoring & Connectivity

Real-time visibility is delivered through the SolaX Cloud platform, which supports Wi-Fi, LAN or optional 4G connectivity. Installers and homeowners can track daily yield, voltage and system performance remotely, ensuring long-term reliability. Standard communication interfaces include RS485 and DRM, simplifying integration with smart meters and home energy management devices.

Compact Design & Practical Installation

Weighing only 6kg and measuring 267×328×116mm, the X1 Mini G4 is built for straightforward installation on tight walls or sheltered exterior locations. The robust IP65 aluminium housing and fanless cooling ensure silent operation and minimal maintenance. This compact footprint makes it an excellent choice for both retrofits and new small-scale systems across the UK.

Installer Guidance & System Notes

String design & MPPT layout

Stay within the 55–380V MPPT window and observe the inverter’s input current limits. The single MPPT design suits one string of panels facing the same direction for maximum efficiency.

Battery configuration & sizing

The X1 Mini G4 can work as part of the wider SolaX system architecture, allowing connection to compatible battery units for hybrid-ready operation. For most UK homes, start with 3–6kWh of storage, expanding as needed.

Grid compliance & safety

Fully certified to G98 and EN 62109 with integrated residual-current, surge and insulation monitoring to support fast, compliant installation.

Why We Recommend the SolaX X1 Mini G4 1.5kW

At Evergy, we recommend the X1 Mini G4 1.5kW for small-scale residential PV systems seeking reliable generation and smart connectivity. It’s a balanced choice for British homeowners looking to lower energy costs with proven SolaX technology. Its IP65 design, quiet operation and easy Wi-Fi setup make it ideal for installers who value both quality and efficiency.

Evergy is the renewable division of LAMPS Electrical — an independent UK wholesaler with over 15 years of experience supplying installers nationwide. We provide verified product data, genuine UK distribution and knowledgeable support on solar system specification.

Compare in the SolaX X1 Mini G4 Range

Model	Max PV (W)	Rated AC (W)	MPPTs	MPPT Window (V)	Max Eff.	Dimensions (mm)	Weight (kg)
X1 Mini G4 0.7kW	910	700	1	55–380	97.1%	267×328×116	6.0
X1 Mini G4 2.5kW	3250	2500	1	55–380	97.5%	267×328×116	6.0

FAQs – SolaX X1 Mini G4 1.5kW

How does the X1 Mini G4 1.5kW differ from the 0.7kW model?

The 1.5kW version provides double the AC output capacity, making it better suited for small family homes or slightly larger rooftop arrays.

Is it compatible with SolaX battery systems?

Yes — it can operate as part of the SolaX hybrid ecosystem and support compatible batteries for enhanced self-consumption.

Can it be installed outdoors?

Yes, its IP65 casing provides protection against dust and rain, suitable for external wall installation.

How can I monitor the inverter’s performance?

Through SolaX Cloud using Wi-Fi, LAN or optional 4G connectivity to view live performance and historical data.

What are the size and weight?

The inverter measures 267×328×116mm and weighs approximately 6kg.

For system design support or compatibility guidance, contact Evergy — the trusted UK distributor for SolaX, Growatt, and Fox ESS solar inverters.

Attribute name	Attribute value
Other Features	Support for external rapid shutdown, EV charger adaptation
IP Rating	IP66
Rated Power	1500W
Max Input Voltage	450V
MPPT Quantity	1
DC Start-up Voltage	50V
Efficiency	98%

X1-MINI-1.5K-G4

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).

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Contact Evergy for product guidance or system compatibility support.

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