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.

T: 02475 100078

E: service.uk@fox-ess.com

Fox 10.5kW K Series Single Phase Hybrid Inverter Β£1,043.00 + VAT
Fox 10.5kW K Series Single Phase Hybrid Inverter #2: FE-KH1-10.5 Storage Systems - Hybrid Inverter Fox 10.5kW Datasheet Fox 10.5kW Manual Fox 10.5kW Warranty Fox 10.5kW G100 Certificate Β  FoxESS K Series 10kW Single Phase Hybrid Inverter Harness the full potential of your solar energy system with the FoxESS K Series 10kW single-phase hybrid inverter. Designed for efficiency and flexibility, this IP65-rated inverter is ideal for indoor or outdoor installations and works seamlessly with high-voltage batteries for maximum round-trip efficiency. Key Features Stylish and Robust Design: IP65-rated enclosure suitable for outdoor environments. High Efficiency: High-voltage battery compatibility ensures up to 97.4% round-trip efficiency. Remote Monitoring & Control: Access and control your system easily via FoxESS Cloud. Easy Installation: Lightweight design at 29kg, saving time and effort on-site. Battery Compatibility: Works with Cube & EP5/11 batteries. Zero Export Control: CT clamp included for safe and compliant energy management. Technical Specifications Specification Value Weight 29 kg Rated Power 10,500 W Minimum PPT Voltage 80 V Maximum PPT Voltage 500 V DC Startup Voltage 75 V DC Shutdown Voltage 601 V Maximum Input Voltage 600 V Maximum DC Power 15,000 W Maximum AC Power (5 min) 10,000 W Surge AC Power (1 sec) 10,500 W Maximum DC Current 64 A Max DC Inputs 4 DC Fuses 0 Connector MC4 Included Connectors 8 Euro Efficiency 97.4 % Transformer None MPPT Quantity 4 Integrated DC Switch Yes Why Choose the FoxESS K Series? The FoxESS K Series combines sleek design, reliable performance, and advanced technology to give you complete control over your solar energy. Its high-efficiency performance and flexible battery compatibility make it an excellent choice for homeowners looking to optimise their solar storage and energy management. Remember to register your install with Fox online to activate the 10 year product warranty, otherwise it's 5 years as standard. Please click here for registration page.Please check the warranty document for more information.
Fox ESS 25.0kW T Series 3PH Dual Tracker PV Inverter Β£1,061.00 + VAT
Fox ESS 25.0kW T Series 3PH Dual Tracker PV Inverter #2: FE-T-25.0 Inverters - Main Units Fox T Series 25.0kW Datasheet Fox T Series 25.0kW Installation Manual Fox T Series 25.0kW User Manual Fox T Series 25.0kW Warranty Fox T Series 25.0kW G99 Certificate Fox Battery Sizing Guide Β  FoxESS T Series – 3-Phase Hybrid Inverter (25 kW) The FoxESS T Series range is ideal for 3-phase residential homes and small-scale commercial installations. Featuring dual MPPT technology, this inverter supports systems from 6.0 kW up to 25.0 kW, delivering high efficiency, reliability, and flexible energy management. Features Easy Plug & Play Installation – Quick and simple setup. IP65 Rated – Suitable for indoor and outdoor environments. Remote Monitoring – Monitor system performance via the FoxESS Cloud. High Efficiency – Round-trip efficiency up to 98.6%. Technical Specifications Weight: 21 kg Rated Power: 25,000 W Min MPPT Voltage: 140 V Max MPPT Voltage: 1,100 V DC Startup Voltage: 140 V DC Shutdown Voltage: 1,100 V Max Input Voltage: 1,100 V Max DC Power: 37,500 W Max AC Power (5 Minutes): 25,000 W Surge AC Power (1 Second): 27,500 W Max DC Current: 28 A Max DC Inputs: 4 DC Fuses: 4 Connector Type: MC4 Included Connectors: 4 Euro Efficiency: 97.8% Transformer: None MPPT Quantity: 2 Integrated DC Switch: Yes Warranty: 5 years Remember to register your install with Fox online to activate the 10 year product warranty, otherwise it's 5 years as standard. Please click here for registration page.Please check the warranty document for more information. Β 
Fox ESS | H3 Smart | 6.0kW | 3-Phase Hybrid/AC Inverter Β£1,209.00 + VAT
FOX ESS H3 Smart 6.0kW 3-Phase Hybrid/AC Inverter – 10 Yr #2: FE-H3-6.0-SMART Storage Systems | Hybrid Inverter Fox H3 Smart Inverter 6.0kW Datasheet Fox H3 Smart Inverter 6.0kW User Manual Fox H3 Smart Inverter 6.0kW Install Manual Fox H3 Smart Inverter Warranty Advanced Hybrid Inverter for Reliable 3-Phase Solar Energy Storage Product Overview The FOX ESS H3 Smart 6.0kW 3-Phase Hybrid/AC Inverter (FE-H3-6.0-SMART) is a powerful, flexible, and efficient energy storage solution designed for residential and commercial solar systems. With true 3-phase backup power, plug & play installation, and remote monitoring via app or web portal, this inverter combines cutting-edge technology with ease of use. Built for maximum performance and durability, the FOX ESS H3 Smart offers 97.2% efficiency, integrated DC switch, and compatibility with three battery types. Its IP65-rated enclosure makes it suitable for both indoor and outdoor installations, ensuring long-term reliability. Key Features Expandable & Flexible 6.0 kW rated power for residential & small commercial systems Hybrid/AC functionality for maximum installation flexibility True 3-phase backup power for stable energy supply Smart Monitoring & Connectivity Remote monitoring via FOX ESS app & web portal Plug & Play installation with built-in fuse protection Performance & Efficiency High efficiency (97.2%) for optimal energy yield IP65-rated enclosure for outdoor durability 10-year warranty for peace of mind Technical Specifications General Information Part Number: FE-H3-6.0-SMART Model: H3-6.0-Smart Weight: 34 kg Warranty: 10 years Electrical Performance Rated Power: 6,000 W Euro Efficiency: 97.2 % Max AC Power (5 min): 6,000 W Surge AC Power (1 sec): 6,600 W DC Input Min PPT Voltage: 140 V Max PPT Voltage: 1,000 V DC Startup Voltage: 140 V DC Shutdown Voltage: 1,000 V Max DC Voltage: 1,000 V Max DC Power: 13,200 W Max DC Current: 60 A Max DC Inputs: 3 MPPT Quantity: 3 Has DC Fuses: Yes (1 included) Connectors: MC4 (6 included) Design & Safety Enclosure Protection: IP65 (outdoor-ready) Integrated DC Switch: Yes Transformer: N/A (transformerless design) ApplicationsΒ  Residential 3-phase solar PV installations Small commercial energy storage systems Backup power solutions with true 3-phase support Flexible hybrid or AC-only solar energy setups
Fox ESS | H3 Smart | 8.0kW | 3-Phase Hybrid/AC Inverter Β£1,279.00 + VAT
FOX ESS H3 Smart 8.0kW 3-Phase Hybrid/AC Inverter – 10 Yr #2: FE-H3-8.0-SMART Storage Systems | Hybrid Inverter Fox H3 Smart Inverter 8.0kW Datasheet Fox H3 Smart Inverter 8.0kW User Manual Fox H3 Smart Inverter 8.0kW Install Manual Fox H3 Smart Inverter Warranty High-Efficiency Hybrid Inverter for 3-Phase Solar Systems Product Overview The FOX ESS H3 Smart 8.0kW 3-Phase Hybrid/AC Inverter (FE-H3-8.0-SMART) is a next-generation energy storage solution designed for maximum flexibility, efficiency, and reliability. Offering true 3-phase backup power, seamless Plug & Play installation, and advanced monitoring via app or web portal, it is an ideal choice for both residential and small commercial PV systems. Built with IP65-rated protection, the H3 Smart inverter is suitable for both indoor and outdoor use. Its compatibility with multiple battery types, integrated DC switch, and high-voltage design ensures outstanding performance and efficiency in a wide range of installations. Key Features Expandable & Flexible 8.0 kW rated power for medium to large 3-phase systems Hybrid/AC functionality for flexible setups True 3-phase backup power for energy security Smart Monitoring & Connectivity Remote monitoring via app & web portal Plug & Play installation with built-in fuse protection Performance & Efficiency High round-trip efficiency (97.2%) for maximum energy yield IP65 enclosure for outdoor durability Compatible with 3 battery types for flexible storage solutions 10-year warranty included Technical Specifications General Information Part Number: FE-H3-8.0-SMART Model: H3-8.0-Smart Weight: 34 kg Warranty: 10 years Electrical Performance Rated Power: 8,000 W Max AC Power (5 min): 8,000 W Surge AC Power (1 sec): 8,800 W Max DC Power: 17,600 W Max DC Current: 60 A Max DC Inputs: 3 MPPT Quantity: 3 Euro Efficiency: 97.2 % Transformer: HF DC Input Specifications Min PPT Voltage: 140 V Max PPT Voltage: 1,000 V DC Startup Voltage: 140 V DC Shutdown Voltage: 1,000 V Max Input Voltage: 1,000 V DC Fuses: 1 included Connectors: MC4 Included Connectors: 6 Design & Safety Integrated DC Switch: Yes Installation: Plug & Play Protection Rating: IP65 (outdoor-ready) ApplicationsΒ  Residential 3-phase solar PV installations Small commercial energy storage projects Systems requiring true 3-phase backup power Flexible hybrid or AC-coupled solar configurations
Fox ESS | H3 Smart | 10.0kW | 3-Phase Hybrid/AC Inverter Β£1,316.00 + VAT
FOX ESS H3 Smart 10.0kW 3-Phase Hybrid/AC InverterΒ  #2: FE-H3-10.0-SMARTΒ Storage Systems | Hybrid Inverter Fox H3 Smart Inverter 10.0kW Datasheet Fox H3 Smart Inverter 10.0kW User Manual Fox H3 Smart Inverter 10.0kW Install Manual Fox H3 Smart Inverter Warranty Product Overview The FOX ESS H3 Smart 10.0kW 3-Phase Hybrid/AC Inverter (FE-H3-10.0-SMART) is a high-performance energy storage solution designed for residential and small commercial solar installations. Offering true 3-phase backup power, plug & play installation, and remote monitoring via app or web portal, this inverter delivers reliable, efficient, and flexible energy management. Built with IP65-rated protection, a built-in DC switch, and fuse protection, the H3 Smart 10.0kW ensures durability and safety in both indoor and outdoor environments. It is compatible with three battery types for maximum installation flexibility. Key Features Expandable & Flexible Rated Power: 10.0 kW for large residential and small commercial PV systems Hybrid/AC functionality for flexible solar integration True 3-phase backup power for uninterrupted energy supply Compatible with 3 battery types for flexible storage solutions Integrated DC switch Smart Monitoring & Connectivity Remote monitoring via FOX ESS app and web portal Plug & Play installation with built-in fuse protection Performance & Efficiency High efficiency (Euro Efficiency 97.2%) for optimal energy output IP65 enclosure suitable for indoor and outdoor installation 10-year warranty included Technical Specifications General Information Part Number: FE-H3-10.0-SMART Model: H3-10.0-Smart Series: FOX ESS H3 Smart Weight: 34 kg Warranty: 10 years Electrical Performance Rated Power: 10,000 W Max AC Power (5 min): 10,000 W Surge AC Power (1 sec): 11,000 W Max DC Power: 18,000 W Max DC Current: 60 A Max DC Inputs: 3 MPPT Quantity: 3 Euro Efficiency: 97.2 % Transformer: HF DC Input Specifications Min PPT Voltage: 140 V Max PPT Voltage: 1,000 V DC Startup Voltage: 140 V DC Shutdown Voltage: 1,000 V Max Input Voltage: 1,000 V DC Fuses: 1 included Connectors: MC4 Included Connectors: 6Β  ApplicationsΒ  Residential 3-phase solar PV installations Small commercial energy storage projects Systems requiring true 3-phase backup power Flexible hybrid or AC-coupled solar configurations
Fox ESS | H3 Smart | 12.0kW | 3-Phase Hybrid/AC Inverter Β£1,362.00 + VAT
FOX ESS H3 Smart 12.0kW 3-Phase Hybrid/AC Inverter – 10 Yr #2: FE-H3-12.0-SMARTΒ Storage Systems | Hybrid Inverter Fox H3 Smart Inverter 12.0kW Datasheet Fox H3 Smart Inverter 12.0kW User Manual Fox H3 Smart Inverter 12.0kW Install Manual Fox H3 Smart Inverter Warranty High-Efficiency Hybrid Inverter for 3-Phase Solar Systems Product Overview The FOX ESS H3 Smart 12.0kW 3-Phase Hybrid/AC Inverter (FE-H3-12.0-SMART) delivers high-capacity solar energy storage and efficient energy management for residential and small commercial installations. Offering true 3-phase backup power, plug & play installation, and remote monitoring via app or web portal, this inverter ensures reliable energy performance with minimal setup. Built for maximum efficiency and flexibility, the H3 Smart 12.0kW is compatible with three battery types, features an IP65-rated enclosure for outdoor use, and includes an integrated DC switch and built-in fuse protection for safe and durable operation. Key Features Expandable & Flexible Rated Power: 12.0 kW for large residential and small commercial PV systems Hybrid/AC functionality for flexible solar integration True 3-phase backup power for uninterrupted energy supply Compatible with 3 battery types for flexible storage solutions Integrated DC switch Smart Monitoring & Connectivity Remote monitoring via FOX ESS app and web portal Plug & Play installation with built-in fuse protection Performance & Efficiency High efficiency (Euro Efficiency 97.2%) for optimal energy output IP65 enclosure suitable for indoor and outdoor installation 10-year warranty included Technical Specifications General Information Part Number: FE-H3-12.0-SMART Model: H3-12.0-Smart Series: FOX ESS H3 Smart Weight: 34 kg Warranty: 10 years Electrical Performance Rated Power: 12,000 W Max AC Power (5 min): 12,000 W Surge AC Power (1 sec): 13,200 W Max DC Power: 22,500 W Max DC Current: 60 A Max DC Inputs: 3 MPPT Quantity: 3 Euro Efficiency: 97.2 % Transformer: HF DC Input Specifications Min PPT Voltage: 140 V Max PPT Voltage: 1,000 V DC Startup Voltage: 140 V DC Shutdown Voltage: 1,000 V Max Input Voltage: 1,000 V DC Fuses: 1 included Connectors: MC4 Included Connectors: 6 Design & Safety Integrated DC Switch: Yes Installation: Plug & Play Protection Rating: IP65 (suitable for outdoor installation) Monitoring: Remote via app or web portal ApplicationsΒ  Β  Large residential 3-phase solar PV installations Small commercial energy storage projects Systems requiring true 3-phase backup power Flexible hybrid or AC-coupled solar configurations
Fox ESS H3 Pro 15kW 3PH Hybrid Inverter Β£2,010.00 + VAT
Fox ESS H3 Pro 15kW 3PH Hybrid InverterΒ  #2: FE-H3-PRO-15.0Β Storage Systems - Hybrid Inverter Fox H3 Series 15kW Datasheet Fox H3 Series 15kW Manual Fox Battery Sizing Guide Fox ESS H3 Pro 3-Phase Hybrid/AC Inverter Product Overview The FoxESS H3 Pro 3-Phase Hybrid Inverter is designed to provide high-performance, expandable energy solutions for commercial and large residential solar installations. With the ability to parallel up to 10 inverters and connect multiple battery stacks, this inverter offers flexible system scaling to meet diverse energy requirements. Key Features Expandable & Flexible Supports up to 2 stacks of Cube or EP batteries per inverter EMS required for parallel inverters (FE-H3-PRO-EMS) Easily enlarge your system based on installation needs Performance & Efficiency 3 MPPT trackers for optimised solar input Full three-phase emergency power capability Two battery inputs for convenient high-voltage battery connection Euro Efficiency: 97.3% Surge AC Power (1 second): 16,500 W Smart Monitoring & Connectivity Remote monitoring via FoxESS Cloud Wi-Fi dongle and smart meter included Modern and functional design with built-in protection Certification & Warranty G99 and G100 certified for UK grid compliance Standard 5-year warranty; extendable to 10 years by registering online with FoxESS Compatible Battery Systems Cube or EP battery series: up to 2 stacks, 7 modules per stack Compatible with: 1x FE-HV-BMS + (3–16)x FE-HV-2600 1x ECM-2900 (Master) + (2–6)x ECS-2900 (Slave) (Connector Type A & B) 1x ECM-4100 (Master) + (2–6)x ECS-4100 (Slave) 1x ECM-4300 (Master) + (2–6)x ECS-4300 (Slave) 1x ECM-4800 (Master) + (2–6)x ECS-4800 (Slave) Technical Specifications Weight: 52.2 kg Rated Power: 15,000 W Min / Max PPT Voltage: 160 V – 1,000 V DC Startup / Shutdown Voltage: 160 V Max DC Power: 22,500 W Max AC Power (5 Minutes): 15,000 W Surge AC Power (1 Second): 16,500 W Max DC Current: 32 A Max DC Inputs: 6 DC Fuses: 1 Connector Type: MC4 Included Connectors: 3 MPPT Quantity: 6 Integrated DC Switch: Yes Transformer: N/A Installation Notes Ensure your installation is registered online with FoxESS to activate the 10-year extended warranty. Otherwise, the standard warranty is 5 years. Please click here for registration page.
Fox ESS H3 Pro 20kW 3PH Hybrid Inverter Β£2,113.00 + VAT
Fox ESS H3 Pro 20kW 3PH Hybrid Inverter #2: FE-H3-PRO-20.0 Storage Systems - Hybrid Inverter Fox H3 Series 20kW Datasheet Fox H3 Series 20kW Manual Fox H3 Series 20kW Warranty Fox Battery Sizing Guide FoxESS H3 3-Phase Hybrid/AC Inverter – Scalable High-Voltage Storage Solution The FoxESS H3 Hybrid Inverter combines high-performance solar conversion with flexible battery integration, giving homeowners and businesses the ability to expand storage capacity up to 86.4 kWh. With full three-phase backup power, multiple MPPT tracking, and smart connectivity, it delivers reliability, efficiency, and control. Key Features Plug & Play Installation Quick and straightforward setup, reducing time on site. Full Three-Phase Emergency Power Provides uninterrupted backup for essential loads during outages. Flexible Battery Expansion Supports two battery stacks, each with up to 7 modules. Compatible with multiple Fox battery series including HV2600, ECS-2900, ECS-4100, and ECS-4800. High-Voltage Design Optimised for maximum round-trip efficiency and larger storage capacity. Remote Monitoring Integrated Wi-Fi dongle and FoxESS Cloud access for real-time system monitoring. Smart Meter Included Enables accurate energy measurement and export limitation. Advanced MPPT Tracking 3 MPPTs allow maximum energy harvesting from multiple solar arrays. Warranty 5-year standard warranty, extendable up to 10 years. Compatibility 1x FE-HV-BMS + (3-16)x FE-HV-2600 1x ECM-2900 (Master) + (2-6)x ECS-2900 (Slave) (Connector Type A or B) 1x ECM-4100 (Master) + (2-6)x ECS-4100 (Slave) 1x ECM-4300 (Master) + (2-6)x ECS-4300 (Slave) 1x ECM-4800 (Master) + (2-6)x ECS-4800 (Slave) Maximum: 2 stacks, 7 modules per stack (1 Master + 6 Slaves), total 2 Masters + 12 Slaves Technical Specifications Weight: 52.5 kg Rated Power: 20,000 W Min MPPT Voltage: 160 V Max MPPT Voltage: 1,000 V DC Startup Voltage: 160 V DC Shutdown Voltage: 160 V Max Input Voltage: 1,000 V Max DC Power: 30,000 W Max AC Power (5 Minutes): 20,000 W Surge AC Power (1 Second): 22,000 W Max DC Current: 96 A DC Inputs: 6 DC Fuses: 1 Connector: MC4 Included Connectors: 12 Euro Efficiency: 97.4% Transformer: None MPPT Quantity: 3 Integrated DC Switch: Yes This FoxESS H3 Hybrid Inverter is ideal for homeowners or small businesses looking to scale their solar + storage systems efficiently, with robust safety, monitoring, and expansion options. Remember to register your install with Fox online to activate the 10 year product warranty, otherwise it's 5 years as standard. Please click here for registration page. Please check the warranty document for more information. Β 
Fox ESS H3 Pro 25kW 3PH Hybrid Inverter Β£2,364.00 + VAT
Fox ESS H3 Pro 25kW 3PH Hybrid Inverter #2: FE-H3-PRO-25.0 Storage Systems - Hybrid Inverter Fox H3 Series 25kW Datasheet Fox H3 Series 25kW Manual Fox H3 Series 25kW Warranty Fox Battery Sizing Guide Β  Fox H3 Hybrid 25kW 3-Phase Inverter – Scalable Energy Storage Solution With up to 25kW charge/discharge, the Fox H3 Hybrid inverter is perfect for expanding residential or small commercial solar systems. The inverter supports three battery series, allowing you to increase storage capacity up to 86.4 kWh. Multiple inverters can be connected in parallelβ€”up to 10 unitsβ€”providing maximum flexibility for larger installations. Supports 2 stacks of Cube or EP batteries with H3 model hybrids. Key Features: Plug-and-Play Installation: Fast, hassle-free setup Full Three-Phase Emergency Power: Reliable backup capability Dual Battery Inputs: Easier connection for high-voltage batteries 3 MPPT Trackers: Optimised solar energy harvesting Remote Monitoring: Via FoxESS Cloud platform Expandable Capacity: Add more batteries as needed High Voltage Design: Maximises round-trip efficiency Included Accessories: Smart meter and WiFi dongle Warranty: 5-year standard, 10-year extended Compatible Batteries: 1x FE-HV-BMS + (3–16)x FE-HV-2600 1x ECM-2900 (Master) + (2–6)x ECS-2900 (Slave) – Connector Type A 1x ECM-2900 (Master) + (2–6)x ECS-2900 (Slave) – Connector Type B 1x ECM-4100 (Master) + (2–6)x ECS-4100 (Slave) 1x ECM-4300 (Master) + (2–6)x ECS-4300 (Slave) 1x ECM-4800 (Master) + (2–6)x ECS-4800 (Slave) Maximum Configuration: 2 stacks, 7 modules per stack (1 Master + 6 Slaves per stack), total of 2 Masters + 12 Slaves. Technical Specifications: Weight: 57.7 kg Rated Power: 25,000 W Min/Max PPT Voltage: 160 – 1,000 V DC Startup / Shutdown Voltage: 160 V Max DC Power: 37,500 W Max AC Power (5 Minutes): 25,000 W Surge AC Power (1 Second): 27,500 W Max DC Current: 96 A Max DC Inputs: 6 DC Fuses: 1 Connector Type: MC4 (12 included) Euro Efficiency: 97.4% Transformer: None MPPT Quantity: 3 Integrated DC Switch: Yes This Fox H3 25kW inverter is ideal for future-proof solar storage systems, offering high efficiency, flexible scalability, and reliable three-phase backup for homes and small businesses. Remember to register your install with Fox online to activate the 10 year product warranty, otherwise it's 5 years as standard. Please click here for registration page. Please check the warranty document for more information. Β 

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