Growatt launches all-in-one energy storage system for residential solar market

Chinese inverter and battery manufacturer Growatt is targeting Australia’s rooftop solar market with the launch of an energy storage system that integrates hybrid inverter technology, modular battery storage, backup power support and intelligent monitoring into an all-in-one design. 

Growatt said the MINA system is purpose-built for single-phase residential applications. The system is available with inverter output ranging from 3 kW to 10 kW while its battery can be configured with up six 5 kWh modules, providing total usable storage capacity of between 5 kWh and 30 kWh.

The system supports three maximum power point trackers, with one string connected to each tracker, and a maximum DC-to-AC ratio of 2.0. Maximum input current is 18 A per tracker, allowing the inverter to accommodate newer high-current PV modules.

Growatt said its battery optimiser technology manages each module independently, helping reduce the effect of differences in state of charge, operating history or ageing between battery modules. It also allows homeowners to add new modules to an existing system as household demand increases.

“This makes MINA especially suitable for households whose energy needs may change in the future,” the company said. “Homeowners can start with a battery configuration that fits their current electricity consumption and expand later as demand grows due to additional appliances, electric vehicles, home offices or stronger backup power requirements.”

MINA provides a 63 A backup connection and can supply selected household loads during grid outages with less than 10 milliseconds switchover time and 150% peak output power to maintain operation of essential equipment and appliances with minimal interruption.

Growatt said the MINA is ideally suited for the Australian market where rising demand for energy independence is making home battery storage an increasingly important part of rooftop solar systems.

“As residential solar adoption continues to grow, homeowners are looking for more practical ways to increase solar self-consumption, reduce reliance on the grid and manage changing electricity costs,” the company said.

“MINA is designed to address these needs by storing excess solar energy generated during the day and making it available for use in the evening, at night or during peak electricity price periods. This helps homeowners maximise the value of their rooftop solar power while improving control over household energy use.”

Growatt said the system has also been designed with installer efficiency in mind with integrated carrying handles and plug-and-play connections helping simplify on-site assembly and reduce installation time. The company claims the hardware can be stacked in about 10 minutes, with system setup and diagnostics completed in a similar period. It can be installed on the floor or mounted against a wall.

Other features include Type II surge protection on both the AC and DC sides, arc-fault protection, natural cooling, IP66-rated housing and remote monitoring. Installers and homeowners can view PV generation, battery status, energy consumption and system performance through Growatt’s monitoring platform.

The system is also virtual power plant (VPP) ready. Growatt lists a 25 kW bidirectional DC charging function for future vehicle-to-grid applications, although this feature is not yet commercially available.

Growatt Vice President Lisa Zhang said the MINA system offers a scalable, future-ready solution for changing residential energy needs.

“MINA reflects Growatt’s commitment to making clean energy smarter, simpler and more accessible for homes around the world,” she said. “With its all-in-one design, battery optimiser technology and flexible expansion capability, MINA gives homeowners greater control over their energy use while helping installers deliver a more efficient and future-ready storage solution.”