Sungrow Launches Next-Generation Residential ESS for Reliable Backup Power

Phu Quoc Island, Vietnam – July 18, 2025 – Sungrow, a global leader in PV inverters and energy storage systems, has unveiled its advanced residential energy storage system (ESS) at the 2025 Southeast Asia Distribution Summit. The new solution, featuring upgraded MG Series inverters, offers power capacities ranging from 5 kW to 10 kW. Designed to meet the growing demand for household energy independence, the system incorporates cutting-edge technologies, including full-power operation at 45°C, active PID recovery, and ultra-fast backup power switching within 4 milliseconds. These features ensure uninterrupted power supply even in extreme climates or unstable grid conditions.

The MG5/6RL inverters are now available and support compatibility with more than 50 third-party energy storage batteries. The higher-capacity MG8/10RL models and the new MGL060 battery will be released in the fourth quarter of 2025.

One System, Endless Possibilities

1. Scalable for Every Home

The system offers flexible expansion, supporting configurations from 5 kW to 80 kW with up to eight units in parallel. This makes it suitable for a variety of living spaces, from compact apartments to large villas. Additionally, its compatibility with mainstream third-party batteries ensures adaptability for diverse energy storage needs.

2. Customizable Energy Solutions

Whether users are starting with solar power today or planning for backup energy in the future, the system accommodates evolving requirements. It supports multiple configurations, including:

· Battery Ready – Install the inverter now and add batteries later.

· Backup Only – A hybrid system without PV panels, providing reliable power during outages.

· Full Off-Grid – A complete energy-independent solution.

3. Smart Energy Management

A single port enables three intelligent functions:

· Graded Load Management – Prioritises critical loads during power shortages.

· Diesel Generator Coordination – Ensures smooth transitions between power sources.

· PV Expansion – Simplifies future solar capacity upgrades.

Uninterrupted Power for Peace of Mind

1. Seamless Backup Transition

In the event of a grid failure, the hybrid inverter switches to off-grid mode in just 4 milliseconds, preventing disruptions to lights and appliances.

2. High Power in a Compact Design

Despite its small size, the system delivers up to 200% overload capacity for 10 seconds. For example, the MG6RL model can provide 12 kW of instant power to support high-demand appliances like air conditioners and washing machines during outages.

3. Whisper-Quiet Operation

With noise levels as low as 35 dB—quieter than a library—the system ensures a peaceful home environment thanks to Sungrow’s Immersive Silence technology.

High-Efficiency Power Generation

1. Maximum Energy Utilisation

The system supports 200% DC input and 160% output capacity, allowing simultaneous power generation and battery charging. A 6 kW inverter, for instance, can deliver 6 kW of AC power while charging the battery at 3.6 kW, optimising energy usage.

2. Compatibility with All Major PV Modules

With a 20A input current capacity, the system works seamlessly with virtually all solar panels available on the market, ensuring no energy goes to waste.

3. Reliable Performance in Extreme Heat

Even at 45°C ambient temperature, the system maintains full power output, ensuring stable energy production during peak sunlight hours.

4. Long-Term Efficiency with PID Recovery

Sungrow’s patented PID ZERO® technology actively repairs potential-induced degradation (PID) without disconnecting from the grid, preserving PV module efficiency for up to 25 years.

Intelligent Control for Smarter Energy Use

1. User-Friendly Touchscreen Interface

A 4.3-inch full-color touchscreen provides real-time monitoring and local control, with setup completed in under 30 seconds—no internet required. Dual LED indicators display system status and battery charge level for quick checks.

2. Rapid Grid Charging for Emergency Preparedness

With a single tap, users can activate fast battery charging from the grid, replenishing the battery from 30% to 100% in just one hour (based on a 6 kW/6 kWh system), ensuring readiness for storms or scheduled outages.

3. AI-Optimized Energy Management (Coming Soon)

Future integration with Sungrow’s iHomeManager will use artificial intelligence to optimise energy usage based on consumption patterns, weather forecasts, electricity tariffs, and extreme weather alerts, increasing green energy benefits by over 12%.

Coming Soon: The Next-Generation MGL060 Battery

Launching in Q4 2025, the MGL060 battery features high-capacity 314 Ah LFP cells with an 8,000-cycle lifespan (60% end-of-life retention)—three times longer than industry averages. It's pack-level DC/DC optimisation ensures efficient performance even when mixing old and new battery units.

With this latest innovation, Sungrow continues to empower households with reliable, efficient, and intelligent energy storage solutions, driving the transition toward sustainable energy independence.