AlphaESS Scalable Solar Storage

For Aussie households serious about getting the most from their solar investment, the AlphaESS SMILE-G3-S5 is a standout choice available through VoltX Energy.This system delivers genuine value by packing a 5 kW hybrid inverter and a modular storage range — scaling from 10.1 kWh all the way up to 60.5 kWh — into a single, space-saving unit.

Whether you are pricing out a standard 10 kW setup or looking for an entry-level battery to complement an existing solar array, the SMILE-G3-S5 effortlessly adapts to your needs. Alpha ESS has earned a strong reputation in Australia, and this feature-packed system shows exactly why. It is fully VPP-ready and FAST FCAS compliant, giving you the flexibility to earn revenue from smart grid services. When the grid goes down, the built-in UPS backup with automatic changeover keeps your essential appliances running without a hitch. Combined with fast 60A charging capability and smart time-of-use optimisation, you have ultimate control over when and how you use your stored power.

For anyone researching reliable solar storage solutions, the combination of scalable capacity, smart technology, and competitive pricing makes the SMILE-G3-S5 an ideal option definitely worth a closer look.

SOFAR PowerAll

Scalable Energy Storage That Grows with Your Home's Needs

The Alpha ESS SMILE-G3-S5 combines a 5kW hybrid inverter with expandable battery storage, giving your flexibility as your energy needs grow. This all-in-one system stores excess solar energy for use during peak times or outages, while VPP-ready technology and Very Fast FCAS capability gives you the option to sell power back to the grid.

Alpha ESS SMILE-G3-S5 Solar Battery Solution

  • Alpha ESS SMILE-G3-S5 Hybrid Inverter & Battery

    From only $4,499

    • Single Phase 5kW inverter  
    • Modular 10.1-60.5 kWh storage capacity
    • Supports up to 200% PV input for maximum solar generation
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  • Key Benefits & Features

    • All-in-One System – Integrated 5kW hybrid inverter and battery in a sleek, space-saving design
    • Expandable Capacity – Start with 10.1kWh and expand up to 60.5kWh as your energy needs grow
    • Built-in UPS Backup – Automatic power during outages with built-in changeover switch functionality
    • VPP & Fast FCAS Ready – Participate in Virtual Power Plants and grid services to earn additional income

    Ideal for

    • Existing solar owners looking to add storage and increase panel capacity
    • Households seeking energy independence and backup power
    • Homeowners wanting to participate in VPP programs
    • Families looking to future-proof their energy solution with expandable capacity
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Discover the Alpha ESS SMILE G3-S5

Complete home energy storage solution featuring a 5kW hybrid inverter, 10.1kWh battery expandable to 60.5kWh, VPP capability, and built-in backup protection.

A Complete Home Power Solution

  • All-in-one design – Integrated inverter and battery saves space and installation time
  • 5kW continuous output – Run essential appliances simultaneously during outages
  • Fast 60A charging – Rapidly replenishes from solar or off-peak grid power
  • Seamless automation – Manage energy between solar, battery, grid, and home use

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Your Energy, Your Rules

  • Time-of-use optimisation – Charge off-peak, discharge during expensive periods
  • Blackout protection – Power essential circuits for hours or days
  • Remote control – Adjust settings anywhere via mobile app
  • Detailed insights – Track exactly where your energy comes from and goes


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