Sunwoda SunESS Power 10–40kWh | 8/10/12/15kW 3-Phase Hybrid Inverter | IP65 | LiFePO4 | All-in-One High Voltage Storage System

10–40kWh LiFePO4 Battery Storage | 8/10/12/15kW Three-Phase Hybrid Inverter | IP65 | Modular & Expandable

Complete All-in-One Solar Energy Storage Solution

The Sunwoda SunESS Power is an advanced, modular, high-voltage energy storage system that combines a powerful three-phase hybrid solar inverter, LiFePO4 battery modules and an intelligent Energy Management System (EMS) into one compact, integrated solution.

Designed for residential energy storage and professional solar installations, SunESS Power offers high efficiency, intelligent energy management, reliable backup power and exceptional installation flexibility.

With four selectable hybrid inverter capacities of 8kW, 10kW, 12kW and 15kW, and battery storage configurations ranging from 10kWh to 40kWh, the system can be tailored to the energy requirements of different installations.

Its innovative stackable architecture enables exceptionally fast and straightforward assembly. The battery modules connect directly through integrated connectors, eliminating the need for external inter-module battery wiring.

Almost plug-and-play, intelligently integrated and designed to reduce installation time and complexity.

Each system package includes the selected hybrid inverter, battery modules, smart meter, WiFi monitoring dongle, battery base and the required standard installation accessories.

For larger configurations of 25–40kWh, an additional battery management/control unit is included for the second battery tower.

Flexible Configuration – Choose Your Inverter and Battery Capacity

Integrated Three-Phase Hybrid Solar Inverter

Select the appropriate inverter power for your installation:

• 8kW – Sunwoda SW8KH3UT

• 10kW – Sunwoda SW10KH3UT

• 12kW – Sunwoda SW12KH3UT

• 15kW – Sunwoda SW15KH3UT

All inverter options feature high-voltage battery compatibility, integrated solar MPPT technology, on-grid/off-grid operation, intelligent energy management and backup power functionality.

Modular Battery Storage – 10kWh to 40kWh

SunESS Power uses high-performance 5kWh LiFePO4 battery modules. Customers can select the required energy storage capacity in increments of 5kWh.

Important: All configurations use one integrated hybrid inverter. For systems above 20kWh, the battery capacity is distributed across two towers, with the required additional battery management/control unit included in the package.

There is no need to purchase a second solar inverter when expanding from 20kWh to 25–40kWh.

Key Features and Advantages

1. Near Plug-and-Play Installation – Save Time and Installation Costs

SunESS Power is engineered for quick, efficient installation by professional installers.

Its stackable modular architecture allows the battery modules to be placed directly on top of one another, using integrated electrical connectors rather than complex external battery wiring.

Installation advantages:

• Stackable battery design with integrated module connections.

• No external power cables required between stacked battery modules.

• Compact, space-saving floor-standing installation.

• Integrated hybrid inverter installed directly on the battery tower.

• Battery base included in the system package.

• Smart meter and WiFi dongle included.

• Reduced battery wiring and assembly complexity.

• Easy module-level expansion.

• Simplified servicing and maintenance.

This intelligent mechanical and electrical design significantly simplifies installation compared with conventional systems comprising separate inverters, battery cabinets and externally wired battery modules.

Final electrical connections, protection devices, grid compliance checks and system commissioning must be carried out by qualified professionals.

2. High-Voltage LiFePO4 Battery Technology

SunESS Power incorporates advanced lithium iron phosphate (LiFePO4) battery technology, recognized for its thermal stability, long service life and reliable performance.

Each battery module has a nominal storage capacity of 5kWh and incorporates intelligent battery electronics for efficient charging, discharging and monitoring.

Battery advantages:

• Safe and stable LiFePO4 chemistry.

• 400V nominal high-voltage battery architecture.

• Operating voltage range of 350–450V.

• 5kWh modular expansion increments.

• 90% depth of discharge (DOD) used for stated usable capacity.

• Module-level energy optimization and active balancing.

• Support for combining compatible existing and new battery modules, subject to manufacturer installation requirements.

• Integrated battery heating functionality for low-temperature conditions.

• Multi-level electrical and thermal protection.

The high-voltage design enables efficient energy transfer between battery storage and the hybrid inverter.

3. Intelligent Three-Phase Hybrid Solar Inverter

The integrated inverter combines solar PV conversion, battery charging and discharging, grid interaction and backup power management.

With selectable output power from 8kW to 15kW, the system is suitable for different solar installation sizes and energy requirements.

Inverter highlights:

• Three-phase AC output, 230/400V.

• Integrated hybrid solar inverter.

• Two independent MPPT trackers.

• Maximum PV input voltage: 1000V DC.

• MPPT operating voltage range: 180–850V.

• Up to 150% PV oversizing, depending on the inverter model.

• Maximum inverter efficiency up to 97.8%.

• Supports three-phase unbalanced loads.

• Integrated grid-connected and off-grid operation.

• Integrated AC and DC surge protection.

• Anti-islanding and electrical protection functions.

The integrated MPPT technology helps optimize solar energy production under varying conditions, while intelligent charging and discharging strategies improve the use of generated energy.

Note: Actual battery charging and discharging performance depends on both the selected inverter and the number of installed battery modules.

4. Backup Power – Energy Security During Grid Outages

SunESS Power includes backup power functionality, allowing designated essential loads to receive power during an electricity grid outage.

When a grid failure occurs, the hybrid inverter can automatically switch to off-grid operation and supply the connected backup circuits using energy stored in the batteries and, where available, solar PV generation.

Backup features:

• Integrated backup AC output.

• Approximately 10ms grid-to-off-grid switching.

• Support for three-phase unbalanced loads.

• Automatic transition between grid-connected and backup operation.

• Intelligent management of available battery energy.

• Suitable for selected critical household or building loads.

Backup circuit design, connected loads and operating duration must be matched to the inverter rating, installed battery capacity and applicable electrical regulations.

5. Smart Energy Management System (EMS)

The integrated EMS intelligently coordinates energy generation, storage and consumption to optimize system performance.

SunESS Power can store surplus solar energy during periods of high PV production and discharge it when electricity demand increases.

The system also supports energy management strategies suitable for installations with variable electricity tariffs.

Energy management capabilities include:

• Solar self-consumption optimization.

• Battery charging and discharging management.

• Time-of-use energy management.

• Grid import and export management.

• Intelligent management of solar PV and stored energy.

• Monitoring of battery state of charge (SOC).

• Integration possibilities for compatible heat pump applications.

• Support for different on-grid and off-grid energy management scenarios.

These capabilities help maximize self-consumption, reduce dependence on grid electricity and improve the utilization of solar generation.

6. WiFi Monitoring and Remote Management

Every SunESS Power inverter package includes a WiFi dongle, enabling online monitoring and system management through the supported Sunwoda monitoring platform.

Once connected and configured, installers and system owners can remotely view system performance and operating information.

Monitoring capabilities:

• Real-time PV generation monitoring.

• Battery state of charge and operating status.

• Battery charging and discharging information.

• Energy consumption and grid interaction data.

• System operating status and fault notifications.

• Remote monitoring via compatible web and mobile interfaces.

• Cloud-based operation and maintenance capabilities.

WiFi connectivity and compatible communication interfaces provide a convenient solution for system monitoring, diagnostics and after-sales support.

7. IP65 Protection – Indoor and Outdoor Installation

Both the inverter and battery modules feature an IP65-rated enclosure, protecting the system against dust ingress and water jets.

The robust housing enables installation in suitable indoor or sheltered outdoor environments.

Benefits:

• IP65 protection for inverter and battery modules.

• Dust-tight enclosure design.

• Protection against water jets.

• Suitable for indoor and appropriately protected outdoor locations.

• Compact, modular construction.

• Corrosion-resistant construction materials.

Outdoor installations must follow Sunwoda's specified environmental requirements, including appropriate protection against direct sunlight, excessive rain exposure, flooding and extreme operating conditions.

8. Built-In Safety and Protection Functions

SunESS Power incorporates multiple safety technologies to protect the battery system, inverter and connected electrical installation.

Integrated safety functions include:

• Battery management and monitoring.

• Overvoltage and undervoltage protection.

• Overcurrent and short-circuit protection.

• Battery overtemperature and low-temperature protection.

• Insulation resistance monitoring.

• Residual current monitoring.

• PV reverse polarity protection.

• Anti-islanding protection.

• Integrated AC and DC surge protection.

• Optional AFCI DC arc-fault protection, depending on configuration.

• Intelligent alarms and system fault monitoring.

The use of LiFePO4 battery chemistry, multi-level protection and intelligent monitoring supports safe and reliable long-term operation.

Technical Specifications

What's Included in the Complete System Package?

All configurations offered include the main equipment and standard accessories required for the selected system.

For 10–20kWh systems:

• 1 × Sunwoda three-phase hybrid inverter (selected 8/10/12/15kW).

• 2–4 × 5kWh LiFePO4 battery modules.

• 1 × Battery base.

• 1 × Smart meter.

• 1 × WiFi monitoring dongle.

• Standard inverter and battery installation accessories.

• Standard mounting and fixing accessories.

For 25–40kWh systems:

• 1 × Sunwoda three-phase hybrid inverter (selected 8/10/12/15kW).

• 5–8 × 5kWh LiFePO4 battery modules.

• Battery base for the main inverter tower.

• Additional base for the second battery tower.

• Additional battery BMS/control unit for the second tower.

• 1 × Smart meter.

• 1 × WiFi monitoring dongle.

• Required battery interconnection accessories.

• Standard mounting and installation accessories.

All larger-capacity configurations include the additional battery management components required for the second tower. No second hybrid inverter is necessary.

External AC/DC protective devices, installation cables and any site-specific electrical equipment must be selected in accordance with the installation design and applicable regulations.

Typical Applications

SunESS Power is an ideal choice for professional solar installers and energy solution providers serving applications such as:

• Residential photovoltaic installations with battery storage.

• Larger homes with three-phase electricity connections.

• Solar self-consumption and energy optimization projects.

• Energy storage installations using dynamic or time-of-use electricity tariffs.

• Residential backup power systems.

• Heat-pump-integrated residential energy applications, subject to compatibility.

• New photovoltaic installations and suitable PV system upgrades.

Its modular construction allows installers to offer a consistent product platform across a wide range of system sizes.

Why Choose Sunwoda SunESS Power?

One Integrated Solution. Multiple Capacity Options. Simplified Installation.

SunESS Power combines the essential components of a modern solar energy storage system into a coordinated, modular platform.

Rather than installing and configuring multiple separate devices, professionals benefit from one integrated hybrid inverter and battery ecosystem with simplified mechanical assembly, intelligent monitoring and flexible system sizing.

The broad choice of inverter powers and battery capacities also allows customers to select an energy storage solution appropriate to their immediate requirements, with expansion possibilities for future energy needs.

Sunwoda SunESS Power is a complete, scalable and installation-friendly energy storage solution for professional solar projects, combining reliable LiFePO4 technology, intelligent energy management, high-voltage efficiency and flexible 10–40kWh capacity in one integrated system.

Delivery: PLEASE NOTE: This is a pallet shipment, make sure that the address you provide is easily accessible for this exceptionally heavy/large shipment. We try to arrange delivery within 1 week.