Fox ESS is a leading provider of renewable energy technologies and energy storage solutions, specialising in photovoltaic (PV) systems and battery storage. Founded with a vision to drive energy efficiency and sustainability, Fox ESS delivers innovative products designed for both residential and commercial applications.

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E: service.uk@fox-ess.com

1 review GivEnergy 3kW AC Inverter Charger charges from Economy 7 or Octopus Go £464.00 + VAT
GivEnergy 3kW AC Coupled Inverter Charger charges from the grid, IP65 #1: GIV-AC3.0 SN #2: GivEnergy 3kW AC Coupled Inverter Charger GivEnergy 3kW Data Sheet GivEnergy 3kW User Manual GivEnergy 3kW Warranty GivEnergy 3kW G100 GivEnergy Full Schematics GivEnergy Welcome Pack 5 yr Extended Warranty available here Suitable for charging from Economy 7 such as Octopus Go. For detailed explanation of how to maximise Economy 7 essential information to work out which battery storage options is best for you please visit - Understaning Economy 7   GivEnergy 3kW AC-Coupled Hybrid Inverter – Solar & Grid Charging GivEnergy’s 3kW hybrid inverter combines state-of-the-art inverter technology, advanced battery systems, and a powerful management platform to deliver efficient, reliable energy storage for your home or business. 🔌 Key Features AC-Coupled Design: Charges from surplus PV generation and the grid (ideal for economy tariffs) Backup Power: Supports up to 2.5kW to critical circuits (requires a 20A+ isolator or changeover switch) Wi-Fi Enabled: Full access to the monitoring platform for real-time performance tracking Remote Management: Site-specific firmware upgrades and troubleshooting via web browser or app Simultaneous Charge & Discharge: Minimises imported energy and optimises usage Export Limitation Functionality: Control the amount of energy exported to the grid ⚡ Benefits Reliable Backup Power: Keeps essential circuits running during outages Full UK Technical Support: Includes 1 hour of installation support with every inverter Commercial & Residential Use: Flexible energy management for all applications Long-Term Protection: 12-year manufacturer warranty for peace of mind ✅ Why Choose GivEnergy GivEnergy designs and manufactures its own inverters, batteries, and monitoring platforms to provide a complete, integrated energy storage solution. With advanced control logic and seamless grid integration, this hybrid inverter maximises self-consumption, reduces energy bills, and future-proofs your renewable energy system.
Solis Single Phase 5kW AC Coupled Inverter £556.00 + VAT
Solis Single Phase 5kW AC-Coupled Inverters #2: SOL-S6-EA1P5K-L Storage Systems - Charger-Inverter Solis S6 5kW  Data Sheet Solis S6 5kW User Manual Solis Product Compatibility  Solis S6 5kW Warranty  5yr extended warranty available here Solis Single Phase 5kW Low Voltage AC-Coupled Inverter The Solis 5kW Low Voltage AC-Coupled Inverter is designed for reliable, efficient home energy storage and solar integration. Perfect for single-phase installations, this inverter ensures safe, flexible, and high-performance operation with modern lithium-ion battery systems. Solis Meter 1ph Eastron with external CT - SDM120CT recommended for accurate energy reading Key Features High charge/discharge capacity: 125A / 6kW maximum rating. Flexible charging schedules: Supports 6 different battery charging and discharging times. Real-time battery monitoring: Keep track of battery health and performance. Remote upgrades: Easily update firmware via internet connectivity. Peak shaving support: Optimise energy use in self-use and generator modes. Low standby power: Minimises overall system energy consumption. Enhanced battery protection: Prolongs battery lifespan and ensures safe operation. Specifications Rated Power: 5,000 W Weight: 24.5 kg Max Current: 40 A Number of Phases: Single-phase (1) Compatibility: Works with Solis Low Voltage AC-coupled battery systems    
Fox AC 3.7kW High Voltage Charger Inverter £607.00 + VAT
Fox AC 3.7kW Charger Inverter  #1: FE-AC1-3.7 Storage Systems - Charger-Inverter Fox 3.7kW Data Sheet Fox 3.7kW Inverter User Manual Fox 3.7kw Inverter Warranty Fox 3.7kw Inverter G100 Certificate FoxESS High Voltage Battery Management System (BMS) Ensure safe, efficient, and optimised battery performance with the FoxESS High Voltage BMS Unit, designed to seamlessly manage Fox EP5/11, HV2600 and Cube battery systems. Key Features Compatible Batteries: Fox HV2600 & Cube batteries Minimum Requirement: 2 x HV2600 batteries required for operation IP65 Rated: Suitable for outdoor installations Remote Monitoring: Access battery status and performance via smartphone or web portal Expandable: Easily add more batteries to grow your storage system Dual MPPT: Optimises solar production for maximum efficiency High Round-Trip Efficiency: 97% for superior energy retention Included Accessories: CT Clamp for installation and monitoring Benefits Easy Installation: Saves time with plug-and-play setup Reliable Safety: Monitors and protects your battery system automatically Scalable: Supports system expansion without hassle The FoxESS HV BMS Unit is the perfect companion for your high-voltage Fox battery storage system, combining safety, efficiency, and smart monitoring in a single compact unit.  
Fox AC 5.0kW High Voltage Charger Inverter £640.00 + VAT
Fox AC 5.0kW Charger Inverter #1: FE-AC1-5.0 Storage Systems - Charger-Inverter Fox 5.0kW Data Sheet Fox 5.0kW Inverter User Manual Fox 5.0kw Inverter Warranty Fox 5.0kw Inverter G100 Certificate   Fox AC Charger Inverter  – Efficient & Expandable The Fox charger is designed for seamless integration into your solar setup. With a user-friendly installation process, this system reduces installation time and provides reliable energy management. Remote monitoring is available via your smartphone or the web portal, giving you full control and visibility wherever you are. Key Features Battery Compatibility: Works with Fox HV2600 and Cube batteries Durable & Weatherproof: IP65 rating makes it suitable for outdoor installation Remote Monitoring: Access via smartphone app or web portal Scalable Solution: Easily expand battery capacity as your energy needs grow Dual MPPT: Ensures optimal solar generation and system performance High Efficiency: Round-trip efficiency of up to 97% Safety First: Requires BMS unit and a minimum of 2 x HV2600 batteries Accessories Included: Comes with CT Clamp for monitoring grid import/export  
SolaX X1 Fit AC Coupled Battery charger Inverter HV 5.0kW £640.00 + VAT
SolaX X1 Fit AC Coupled Battery charger Inverter HV 5.0kW #2: X1-FIT-G4-5.0 Storage Systems - Charger-Inverter #3: 4614 Sola X1 RetroFit Inverter Data Sheet Solax X1 RetroFit Inverter User Manual Solax X1 RetroFit Inverter Warranty Solax X1 RetroFit G99 Certification Energy meter is required for SolaX charger to work WiFi stick is required for SolaX CloudFor a full list of SolaX products click here. SolaX X1 RetroFit AC Charger – Upgrade Your PV System Upgrade your existing solar PV system effortlessly with the SolaX X1 RetroFit AC Coupled Inverter Charger. Designed for single-phase inverters of any brand, this retrofit solution delivers high efficiency, flexibility, and reliable performance. Ideal for residential or commercial installations. Key Features High Efficiency – Up to 97% maximum efficiency for optimal energy usage Flexible Battery Support – Supports high-voltage batteries for reduced cable thickness Wide Compatibility – Works with any single-phase inverter brand Remote Monitoring – Monitor performance via SolaX XCloud Quiet & Low Maintenance – Natural cooling design for silent operation Technical Benefits Max Charge/Discharge – 6 kW Installation – Indoor or outdoor rated Smart Grid Ready – Supports grid trading with <0.5s response time Flexible Charging – Grid charging possible Connectivity – WiFi or LAN stick available separately Battery Requirements Minimum of 1 Solax battery per X1 AC inverter Maximum of 3 batteries, all must be same capacity (cannot mix 4.5kWh and 6.3kWh batteries) Compliance UK tested and certified under G98/G99 standards Requires latest firmware and hardware version for compliance The SolaX X1 RetroFit AC Charger is the perfect solution to extend the life and capabilities of your PV system while providing smart, high-efficiency energy management.
SolaX X1-FIT G4 7.5kw (AC Coupled Inverter) £670.00 + VAT
SolaX X1-FIT G4 7.5W (AC Coupled Inverter) #3: 4578 Sola X1 FIT Data Sheet Solax X1 FIT User Manual Solax X1 FIT Warranty Solax X1 FIT G99 Certification   SolaX X1-FIT G4 7.5kW (AC Coupled Inverter) The SolaX X1-FIT G4 7.5kW AC Coupled Inverter Charger is designed to upgrade existing solar PV systems with reliable battery storage functionality. Compatible with any single-phase inverter brand, it delivers up to 97% efficiency and is built for both indoor and outdoor installations. With remote monitoring via the SolaX Cloud, homeowners can optimise energy usage and maximise savings. Benefits of the SolaX X1-FIT G4 Store excess solar energy for later use, reducing grid reliance Provides emergency power supply (EPS) during power cuts Compact, lightweight design with IP65 weatherproof rating Supports grid trading applications with rapid response times Compatible with high-voltage batteries, reducing cabling costs Advanced Features High Performance & Efficiency Max. efficiency: 97% Max. 7.5kW power output with 40A current AC attributes: Single-phase, 7500W max power Smart Energy Management VPP (Virtual Power Plant) function for smart grid trading Remote firmware upgrades and control Flexible peak shaving to balance grid demand Charging from the grid supported Reliable & Low Maintenance Natural cooling system for quiet operation Robust IP65 rating for indoor/outdoor use WiFi or LAN connectivity options available separately Technical Specifications AC Attributes Max Power: 7500W Max Current: 40A Phases: 1 System Performance Max Efficiency: 97% IP Rating: IP65 Weight: 23kg Dimensions: 482 × 417 × 181mm For a full list of SolaX products click here.
SolaX X3-FIT G4 8kW (3ph AC Coupled Inverter) £957.00 + VAT
SolaX X3 RetroFit AC Coupled Battery 3ph Inverter 8kW #2: X3-FIT-8#3: 4748 Solax X3 8kW Inverter Data Sheet Solax X3 8kW Inverter User Manual Solax X3 8kW Inverter Warranty Solax X3 Inverter G99 Certification SolaX X3-FIT Series 3-Phase AC Coupled Hybrid Inverter Product Overview The SolaX X3-FIT Series is a fourth-generation, 3-phase AC coupled hybrid inverter designed for maximum solar energy utilisation. This retro-fit inverter directs excess solar energy into your battery for later use and can act as a backup power supply during grid outages, sending stored energy back to your home. Key Features Virtual Power Plant (VPP) Function Supports VPP integration for smart energy management Emergency Power Supply (EPS) Switchover time <10ms Provides up to 150% output for 60 seconds during power loss Flexible Energy Management Max. 110% nominal apparent AC power Flexible peak shaving for optimised energy use Optional three-phase unbalanced output Connectivity Compatible with WiFi V2.0 for SolaX Cloud monitoring WiFi stick required for remote monitoring Installation Notes For G100 applications, a software update is recommended Recommended use with SolaX CHINT three-phase CT energy meter Collections are not permitted due to health & safety regulations Technical Specifications AC Attributes Max power: 8,800 W Max current: 12.9 A Number of phases: 3 System Max efficiency: 98% IP rating: IP65 Dimensions & Weight Dimensions (H x W x D): 503 x 503 x 199 mm Weight: 30 kg
SolaX X3-FIT G4 10kW (3ph AC Coupled Inverter) £1,129.00 + VAT
SolaX X3 RetroFit AC Coupled Battery 3ph Inverter 10kW #2: X3-FIT-10#3: 4749 Solax X3 Inverter Data Sheet Solax X3 Inverter User Manual Solax X3 Inverter Warranty Solax X3 Inverter G99 Certification Modbus Energy meter is required for SolaX charger to work WiFi stick is required for SolaX CloudFor a full list of SolaX products click here.   Three-Phase Retro Fit 10.0kW AC Coupled Inverter Product Features Compatible with high-voltage batteries IP65 protection rating Natural cooling for low maintenance Maximum efficiency up to 96% EPS Functionality This is the W version of the inverter with a built-in EPS function. An external backup box is required to fully utilise the EPS capability. Battery Compatibility Supports 2 to 4 Solax Triple Power Batteries (all batteries must be the same size per system). Scalability This inverter can be paralleled up to 5 units per site, offering flexible expansion for larger installations.

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