GivEnergy All in One Home Battery Backup Guide UK

Key Takeaways

• The GivEnergy All in One 2 combined with the Giv-Gateway (model GIV-AIO-GW1) delivers seamless whole-home backup capability during National Grid outages.
• An automatic 20 ms switchover time ensures domestic appliances, lighting, and sensitive consumer electronics remain powered without interruption.
• Unlike basic emergency power supply (EPS) sockets, the Giv-Gateway architecture allows solar PV to continue generating with no grid supply, creating a self-sustaining islanded microgrid.
• The integrated All in One 2 provides 13.5kWh Capacity, scalable with up to two Expansion Batteries, delivering 6.0-12.0kW Nominal AC power and up to 12kVA continuous islanded output (with 14.4kVA peak surge).
• The Giv-Gateway accommodates a full 100 A domestic supply with 18.4 kW continuous throughput, featuring a pre-installed energy meter for faster installation.

The Evolution of Domestic Backup in Great Britain

Grid resilience has become a paramount priority for British homeowners investing in residential renewable technology. Traditional domestic solar photovoltaic systems are engineered with mandatory anti-islanding protection: when the regional distribution network operator (DNO) loses mains grid voltage, standard solar inverters must immediately shut down to prevent backfeeding power into the street and endangering maintenance personnel.

While standard hybrid inverters often include a dedicated emergency power supply (EPS) terminal, these basic ports typically power only a single segregated double socket or a strictly isolated backup circuit. Powering an entire modern domestic property during a blackout requires a sophisticated automatic transfer switch capable of isolating the home from the regional electricity network within milliseconds.

The combination of the GivEnergy All in One 2 energy storage unit and the dedicated Giv-Gateway provides true whole-home backup. When mains electricity fails, the platform decouples the consumer unit from the distribution network, establishes an independent local AC voltage reference, and powers all domestic circuits directly from the battery and rooftop solar array.

Giv-Gateway Engineering: Whole-Home Transfer Switch Architecture

At the center of whole-home backup is the Giv-Gateway (official model SKU: GIV-AIO-GW1). Installed between the incoming statutory electricity meter and the main domestic consumer unit, the Gateway functions as the central power conduit and automatic transfer switch for the entire property.

Electrical Ratings and Grid Compatibility

The Giv-Gateway is engineered to accommodate standard British single-phase residential electricity supplies:

• Maximum Continuous AC Current: Rated at 100 A, matching the standard 100 A service fuse deployed by UK distribution network operators.
• Nominal Throughput Power: Provides 18.4 kW continuous AC throughput, ensuring that normal household energy consumption is never throttled during grid-connected operation.
• Voltage Operating Window: Designed for 230 V nominal grid supply, operating stably across a wide tolerance of 180–270 V to withstand network fluctuations.
• Frequency Tolerance: Operates at 50/60 Hz with a ± 5 Hz operating window, maintaining synchronization during grid frequency variations.
• Pre-Installed Metering: The Gateway incorporates a pre-installed energy meter for faster installation, eliminating the requirement for external current transformers (CT clamps) and associated communication cabling between separate meter enclosures.

Mechanical Dimensions and Physical Siting

The Giv-Gateway enclosure is engineered for compact physical installation beside existing service equipment:

• Physical Cabinet Dimensions: Measures 410H × 370W × 190D mm, allowing convenient wall-mounting within domestic meter cupboards, garages, or utility areas.
• Physical Enclosure Weight: Weighs 12.75 kg, enabling single-person installation and secure mounting on masonry surfaces.
• Warranty Protection: Backed by a standard 12-year warranty from the manufacturer.

All in One 2 Architecture: Inverter-Battery Integration

The companion power unit to the Gateway is the GivEnergy All in One 2. By housing high-voltage battery storage and high-power inverter electronics within a unified floor-standing chassis, the platform eliminates bulky inter-device DC cabling.

Continuous Power Delivery and Peak Surge Capacity

The All in One 2 platform delivers commercial-grade electrical throughput to domestic consumers:

• Base Storage Capacity: Begins with 13.5kWh Capacity of lithium iron phosphate chemistry.
• Nominal Inverter Continuous Power: Delivers 6.0-12.0kW Nominal AC power, configurable across discrete factory power scaling options of 6/8/10/11/12kW to match property requirements and DNO connection agreements.
• Continuous Off-Grid Power: Provides 12kVA continuous power delivery when operating in islanded off-grid mode.
• Peak Surge Capability: Capable of supplying 14.4kVA peak power for 10 seconds, easily absorbing initial startup inrush currents from inductive motor loads (such as heat pump compressors, borehole water pumps, and refrigeration motors).
• Transfer Latency: Achieves a 20ms switchover (catalogued as 20 ms switchover time to keep household loads running during grid loss), providing uninterruptible transition without resetting digital clocks or domestic computers.

Technical Specification Matrix: Whole-Home Backup

Islanded Microgrid Operation: Blackout Solar Generation

The fundamental limitation of ordinary backup systems is that rooftop solar arrays stop generating electricity during a power outage. Once the battery empties, the property loses power completely, even under brilliant sunshine.

The Giv-Gateway solves this fundamental constraint:

• Sustained Photovoltaic Generation: The system allows solar PV to continue generating with no grid supply. The Gateway creates an islanded domestic microgrid, feeding solar power directly into domestic appliances.
• Dynamic Solar Storage Recharging: Any solar generation exceeding real-time household demand is directed into the All in One 2 battery pack, recharging the cells during daylight hours to provide power throughout the subsequent night.
• High-Voltage Battery Efficiency: The internal battery architecture operates at 307V nominal voltage across an operating window of 260-346V, driven by a 52Ah cell capacity. This high-voltage bus reduces resistive current losses compared to legacy low-voltage systems.
• Extensive Array Integration: With Four Solar String Inputs, the platform accommodates complex multi-orientation roof layouts, maximizing solar capture across east, west, and south-facing roof facets.
• Modular Storage Stacking: For properties with heavy continuous electrical consumption, the base 13.5 kWh capacity can be expanded with up to two Expansion Batteries, tripling on-site storage reserves.

Regulatory and Installation Compliance in Great Britain

Installing whole-home backup hardware in the UK requires strict adherence to national electrical safety standards and network distribution regulations:

• Independent Earthing under BS 7671: In standard grid-connected mode, domestic properties typically rely on protective multiple earthing (PME/TN-C-S) provided by the distribution network operator. However, under BS 7671 wiring regulations, when the Gateway mechanically isolates the property from the grid during an outage, the network earth reference cannot be relied upon. Installers must install an independent earth electrode (earth rod) to provide a local neutral-earth reference during islanded operation.
• DNO Notification and G99 Approval: Because the All in One 2 inverter exceeds the standard single-phase 3.68kW microgeneration threshold under ENA EREC G98, installers must submit a formal prior application to the regional DNO under ENA EREC G99. Connecting a unit capable of 6.0-12.0kW Nominal AC power requires formal grid authorization before commissioning.
• Physical Protection and Environmental Siting: The All in One 2 chassis carries an IP65 ingress protection rating, certifying that the unit is fully protected against dust ingress and low-pressure water jets. This rating allows flexible physical siting either inside a garage or utility room, or mounted externally against a solid structural wall.
• Long-Term Warranty Assurance: GivEnergy provides long-term operational protection for the system, covering the Giv-Gateway with a 12-year warranty and the All in One 2 storage platform with a comprehensive 15 Year warranty.