At Bright Light Technologies, we have partnered with Fox ESS to bring homeowners the most reliable, efficient, and scalable solar technology on the market. From compact residential setups to large-scale commercial arrays, the Fox ESS line up is designed for maximum performance in the UK climate.
Why Choose Fox ESS?
Fox ESS isn’t just a battery manufacturer; they are global leaders in inverter and storage technology. Their systems are designed specifically for the high demands of the UK energy market.
- Modular “Cube” Design: Start with a small capacity and easily add more “storage cubes” as your family or energy needs grow.
- High Discharge Rates: Optimized for “Time of Use” tariffs (like Octopus Flux), allowing you to charge and discharge rapidly during the most cost-effective windows.
- IP65 Weatherproof: Engineered for flexibility. Fox systems are rated for both indoor and outdoor installation, saving valuable space in your home.+1
- UK-Based Support: Peace of mind with a dedicated UK technical team and industry-leading warranties of up to 10–12 years.
The Hybrid Advantage
A Hybrid Inverter is more than just a converter; it is the “brain” that balances solar generation, home consumption, and battery storage. At Bright Light Technologies, we install the latest generation of Fox ESS Hybrid Inverters, designed to provide seamless backup power and maximize your savings.
Unlike standard inverters, Fox ESS Hybrids allow you to:
- Store Excess Energy: Automatically divert unused solar power to your batteries instead of sending it to the grid.
- Access Backup Power (EPS): During a power cut, the inverter can switch to “Emergency Power Supply” mode, keeping your lights and essential appliances running.
- Optimize Tariffs: Use the FoxCloud app to charge your batteries from the grid when prices are low (e.g., overnight) and discharge them during peak evening hours.
Fox ESS Hybrid Product Range
Single-Phase Flagships (Residential)

KH Series (7.0kW – 10.5kW): * Best For: Larger homes with high energy demands and significant solar arrays.
Why it wins: It features a massive 110A charge/discharge current, allowing it to charge your batteries at lightning speed—essential for short off-peak “Time of Use” windows.

H1 Series (3.0kW – 6.0kW):
Best For: Standard UK residential homes.
Why it wins: A proven, reliable workhorse with a low start-up voltage, ensuring you begin generating power as soon as the sun rises.
Three-Phase Powerhouses (Large Homes & Business)

H3-Smart Series (5.0kW – 15.0kW):
Best For: Modern properties with three-phase electricity.
Why it wins: Provides a high-voltage battery connection for maximum round-trip efficiency and 100% unbalanced three-phase output support.

H3-PRO Series (15.0kW – 30.0kW):
Best For: Large estates or commercial sites.
Why it wins: Industrial-grade performance with the same easy-to-use smart monitoring as our residential units.
The All-In-One (AIO) Storage System
Power Range: 3.7kW – 15kW
What it is: For customers who value aesthetics and space, the AIO combines the hybrid inverter and battery storage into one sleek, floor-standing cabinet.
Why it wins: No messy external cables or wall-mounted boxes. It features an IP65/IP66 rating, meaning it can be installed in a garage or even outdoors while looking like a high-end appliance.
Battery Storage
Fox ESS EP6 & EP12: Modular, Heated, and High-Performance The Fox EP Series is the premier choice for homeowners looking for high-voltage efficiency and modular scalability. Whether you start with the compact EP6 (5.76kWh) for smaller daily loads or the high-capacity EP12 (11.52kWh) for whole-house backup, you benefit from Fox’s industry-leading LFP chemistry and advanced safety features.
- Winter-Ready: Integrated self-heating technology keeps cells at the optimal temperature for charging during Norfolk frosts.
- Scalable Design: Using the Fox Junction Box, you can stack up to four units in parallel, reaching a massive 46kWh of storage per inverter.
- Space-Efficient: Only 185mm deep, these units are significantly thinner than traditional battery “cabinets,” making them perfect for narrow garages or utility rooms.
- High Efficiency: With a round-trip efficiency of ≥95%, more of the energy you generate is available for you to use.


Take Control with FoxCloud 2.0
All our hybrid installations include a WiFi/LAN stick that connects your inverter to the FoxCloud 2.0 platform. From your smartphone, you can:
- Set “Work Modes” (Self-consumption, Feed-in priority, or Force Charge).
- Monitor exactly how much money you are saving in real-time.
- Receive automatic firmware updates to keep your system at peak performance.
Not sure which Hybrid Inverter is right for you?
Our MCS-qualified surveyors will analyse your energy bills and roof orientation to recommend the perfect Fox ESS model for your home.
Contact us today for a free, no-obligation consultation and discover how a Hybrid Inverter system can help you save today.
