SolaX X1-IES 3.7kW Hybrid Inverter | EPS + Battery Ready

SolaX X1-IES 3.7kW: The Smart Hybrid Inverter for Smaller Solar Setups

Engineered for households starting their solar-plus-storage journey, the SolaX X1-IES 3.7kW hybrid inverter delivers efficient energy management, seamless battery integration, and automatic EPS switchover. With dual MPPT inputs, it’s a great match for UK homes with modest generation capacity or shaded roof layouts.

Flexible Solar Design with Dual MPPT Inputs

The X1-IES 3.7kW supports up to 7.5kW of PV input through two independent MPPTs, allowing arrays to be split across different roof aspects. This helps maximise yield even on properties with limited or angled roof space.

• Up to 200% PV oversizing (7.5kW input)
• Dual MPPTs for varied roof orientations
• Integrated export control via CT clamp

Hybrid Storage Ready for SolaX & Third-Party Batteries

This inverter pairs perfectly with SolaX high-voltage batteries and also supports other CAN or RS485-compatible storage systems. It forms a central part of a fully integrated solar and storage setup.

• Compatible with SolaX Triple Power & IES batteries
• Up to 20.4kWh battery support
• Fast response times for charging and discharging

Seamless EPS Backup for Home Resilience

With built-in emergency power supply support, the X1-IES 3.7kW ensures your home can stay powered during outages. Switchover happens in less than 10 milliseconds , fast enough for most essential appliances.

• EPS backup with <10ms switch time
• 200% EPS overcurrent for 10s
• Safe, stable power during grid outages

Durability and Compliance for UK Installations

With an IP66-rated casing and full UK certification, the X1-IES 3.7kW is suitable for both indoor and outdoor installations. Its intelligent cooling and online diagnostics make it reliable year-round, even in variable British weather.

• IP66 weather-resistant enclosure
• G99 grid compliant
• 10-year manufacturer warranty

Why Evergy Recommends This Product

The 3.7kW model is an ideal entry point into hybrid systems , especially for homes with limited roof space, smaller energy usage, or a lower budget. It’s a scalable platform that still allows growth over time. For more flexibility or larger households, consider the 6.0kW or 8.0kW versions in the same series.

Perfect for Small to Mid-Size Homes

This inverter suits homeowners with up to ~4kW solar arrays, those on smart tariffs, or customers with low to medium daily energy demands who want a battery-ready solution with backup features.

Key Technical Specifications

• Max PV Input: 7.5kW DC
• Battery Voltage Range: 85–460V
• Dimensions: 482 × 417 × 181 mm
• Weight: approx. 22 kg

Full technical information is available in the specification tab or downloadable datasheet.

Complete Your System

Enhance your install with solar panels, HV battery modules, and mounting systems , all available from Evergy. You can also read our solar setup guide to learn how this inverter fits into your home energy strategy.

FAQs

Q: Will this work with Octopus tariffs?
A: Yes -  smart scheduling through the SolaX Cloud enables charging and discharging to align with off-peak and export tariffs.

Q: Is WiFi monitoring included?
A: Yes -  the X1-IES includes WiFi connectivity as standard, with options for Ethernet or 4G dongles.