8kW 56kWh Single Phase ESS Kit

The 8kW 56kWh Single Phase ESS Kit is the large-capacity option in the Sinoah Energy single-phase range. It combines the BW-INV-SPH8K inverter, which accepts 16kW of PV input across four MPPT trackers, with a 56.26kWh battery bank built from 14kWh or 7kWh stackable modules. The pairing is sized for homes where a heat pump, an EV charger and a large array all run on one single-phase supply.

The battery modules are floor-standing, natural-convection cooled and rated IP66, and the whole system is delivered as a matched set with the inverter so the communication and protection settings are configured before dispatch. Because capacity is built in 7kWh and 14kWh steps, the same kit can be adjusted to the property rather than forcing the property to fit the kit.

System Architecture: Inverter, Stack and Monitoring

Three parts make up the installation. The hybrid inverter sits on the wall and manages solar input, battery charging and backup output. The battery stack stands on the floor with each module containing its own cells, BMS and protection. The monitoring link runs over CAN between battery and inverter, and over WiFi or LAN to the app, so state of charge, per-module voltage and cycle count are visible remotely.

Four MPPT trackers separate the array into independent groups, which is the main reason this inverter is specified on larger properties where panels are spread over a main roof, an extension and a garage. Each string is reported separately, so a shaded or dirty plane is identified in the app rather than by a site visit.

Module Configurations

Both configurations deliver the same usable capacity of 55.14kWh at 98% depth of discharge. The 14kWh build is the usual choice where floor space is tight, since it uses four enclosures instead of eight; the 7kWh build allows finer matching where capacity is expected to grow in stages.

Combined Specifications

Sizing: What 56kWh Covers

A household running a heat pump through winter can consume 25kWh to 35kWh a day, and an EV adds 8kWh to 12kWh for average mileage. With 55.14kWh usable, this kit covers a full winter day including the evening peak, or several days of normal demand during an outage, without relying on the grid.

The 8kW inverter sets the ceiling for instantaneous supply and for charge rate. Because the battery accepts a 60A charge current, a large array can refill the stack quickly on a good day, which is what makes a 56kWh bank practical rather than a battery that takes days to recover.

Commissioning and Handover

Commissioning connects the stack to the inverter, sets the grid code for the DNO notification, and configures the tariff schedule in the app. The handover pack includes the inverter certificate set, the battery safety and transport documentation, and the recorded commissioning settings.

Because inverter and battery are supplied together from UK stock, the installation is planned around one delivery and one commissioning visit, with the module count confirmed against the property before the order is placed.

Applications

The 8kW 56kWh Single Phase ESS Kit suits large detached homes with heat pumps, EV charging and multi-plane roofs.

Off-grid-capable properties that need several days of autonomy rather than hours.

Trade and distribution customers supplying complete single-phase storage systems to installers.

Why Choose Sinoah Energy

Sinoah Energy holds energy storage systems in the UK and supplies them as matched kits, with the inverter, battery modules and documentation arriving together. The hardware is manufactured by NeoVolt, which has more than ten years of production experience across inverters and lithium batteries, and support is provided locally.

The company handles pre-sales design and capacity calculation, compatibility checks, OEM or ODM customisation for trade partners, and after-sales diagnostics through the monitoring platform, with dealer training on request.

FAQ

Q: How is the 8kW 56kWh Single Phase ESS Kit assembled?

A: It is built from four 14kWh modules or eight 7kWh modules. Both give 56.26kWh rated and 55.14kWh usable at 98% depth of discharge.

Q: Will this cover a heat pump through winter?

A: A winter day with a heat pump typically draws 25kWh to 35kWh, which sits inside the usable capacity, so the system covers the day and the evening peak without importing.

Q: Can the system be extended beyond 56kWh?

A: Capacity is added in modules steps. Larger requirements move to a multi-stack arrangement, which is confirmed at design stage.

Q: How much floor space is needed?

A: The 14kWh build occupies a 690 x 240mm footprint and stands 1925mm high. Clearance is left around the stack for natural convection cooling.

Q: Is the system suitable for an unheated garage?

A: Yes. The modules include self-heating for charging from -20C and are rated IP66.

Q: What documentation arrives with the kit?

A: The inverter certificate set for the DNO notification, battery safety and transport documents, and the commissioning record showing the grid code selected.