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Premium Energy Storage · Victoria

Smart Battery Storage

Store your solar energy, protect your home against blackouts, and unlock Virtual Power Plant earnings. We specialize in premium, VPP-ready battery platforms designed and installed by our in-house Victorian team.

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No subcontracting. Every system is sized to your loads, designed for compliance, and installed by xTechs A-Grade electricians.

VPP-Ready Smart Battery

Cut network demand charges and export energy automatically during high-price events.

  • Sigenergy 5-in-1 Integration
  • GoodWe ESA Australia-Wide Trust
  • AC-coupled & DC Hybrid Paths
  • 10-Year Local Warranties
Our Primary Systems

Sigenergy & GoodWe ESA

We design and install Victoria's two leading battery systems. Both support new DC hybrid builds and AC retrofits on existing solar arrays.

Sigenergy premium energy storage system
Premium Integration

Sigenergy Systems

Sigenergy is a highly innovative platform integrating the hybrid inverter, battery storage, and EMS controller into one modular stack. Its standby AC-coupled gateway allows panels to keep charging the battery in a blackout.

  • DC-coupled hybrid or AC-coupled retrofit setups
  • Outage charging via gateway (PV charges battery during blackout)
  • Modular stack expansion up to 25 kWh per unit
  • Sleek 5-in-1 integrated design
  • Advanced App control with real-time optimization
Explore Sigenergy →
GoodWe ESA Series battery system
Australia's Choice

GoodWe ESA

GoodWe is a proven brand widely deployed across Victoria. The GoodWe ESA series offers a robust, highly modular residential battery layout with excellent after-sales support and reliable app management.

  • Proven, widely deployed brand in Australia
  • Cost-effective residential storage standard
  • Supports hybrid (DC-coupled) and retrofit (AC-coupled) layouts
  • Highly reliable modular configuration (up to 48 kWh)
  • Seamless integration with Australian VPP networks
Explore GoodWe ESA →
Comparison

How They Stack Up

Which system fits your home depends on whether you have existing solar, your blackout backup needs, and budget. Compare their core differences below.

Standout Backup

Sigenergy Highlights

Choose Sigenergy if blackout backup is a priority and you want existing panels to continue charging the battery during grid drops on an AC retrofit.

  • AC blackout charging: Inverter charges battery during outages (via gateway).
  • All-in-one footprint: Inverter and battery stack vertically with zero visible cables.
  • Rapid scaling: Easily stack multiple modules up to 25 kWh or 48 kWh.
Proven Reliability

GoodWe ESA Highlights

Choose GoodWe ESA when looking for a widely deployed brand in Victoria with a highly cost-effective, modular structure and broad VPP compatibility.

  • Proven record: Wide network of installer support and published documentation in Australia.
  • Cost-effective: Exceptional value per kWh, minimizing setup payback periods.
  • Modularity: Scalable standard battery modules built on trusted lithium-ion chemistry.
SpecificationSigenergy SystemsGoodWe ESA Series
Primary ApplicationPremium backup & advanced grid controlCost-effective, proven residential storage
Blackout Charging (AC Retrofit)Supported via Sigenergy GatewayNo (existing PV cannot charge battery during grid drops)
Round-trip EfficiencyUp to 98% (DC-coupled hybrid)Up to 96% (DC-coupled hybrid)
Modular Sizing Blocks5 kWh / 8 kWh stackable modules5.4 kWh stackable modules
Standard In-House InstallBy xTechs A-Grade ElectriciansBy xTechs A-Grade Electricians
Warranty Duration10-year product warranty10-year product warranty
Scenario Picker

Which Setup Fits Your Home?

The wiring method determines how energy flows. Let's find your scenario.

Scenario 1 · AC Retrofit

You have an existing solar system

If your solar inverter is working fine and is under ~7 years old, an AC-coupled retrofit adds battery storage without replacing your working equipment.

Recommended System: Sigenergy + Gateway (adds grid-outage charging) or GoodWe ESA
Scenario 2 · DC Hybrid

New solar + battery installation

Starting fresh? A DC-coupled hybrid platform runs both panels and storage through a single inverter, providing maximum efficiency (95–98%) and unified monitoring.

Recommended System: Sigenergy Hybrid or GoodWe ESA Hybrid

Need a deep dive on wiring paths? Read our dedicated AC vs DC-Coupled Guide.

Financial Incentives

Rebates & VPP Integration

Victorian energy storage works hard for your pocket. Stack federal STC battery credits with high-performance VPP earnings to speed up your return on investment.

Tiered Capacity STCs (From May 2026)

Federal STC battery incentives are calculated by usable capacity. The first 14 kWh gets 100% credit value, capacity between 14–28 kWh gets 60%, and capacity above 28 kWh gets 15%.

VPP Earnings (Amber & GloBird)

Participate in Virtual Power Plants like Amber SmartShift or GloBird ZeroHero. Sell your battery's stored solar energy during grid demand spikes, earning high export rates.

Federal STC Tiered Capacity Credits

First 14 kWh of capacity100% Credit Value
14 – 28 kWh capacity60% Credit Value
Capacity above 28 kWh15% Credit Value

* Tiered STC limits apply per household installation. Sigenery and GoodWe systems are fully certified for all Victorian networks.

FAQ

Frequently Asked Questions

What is the difference between AC-coupled and DC-coupled battery systems?

DC-coupled systems connect both your solar panels and your battery to a single hybrid inverter, maximizing round-trip efficiency (95–98%) by reducing energy conversions. AC-coupled systems connect the battery via a dedicated battery inverter directly to your home's AC grid. This makes them highly flexible and ideal for retrofitting storage to an existing, working solar installation without replacing your existing inverter.

Sigenergy vs GoodWe ESA — how do they compare?

Both are premium, VPP-ready smart platforms. Sigenergy offers a sleek 5-in-1 integrated hybrid design and a standout AC gateway that allows your existing solar inverter to continue charging the battery during blackouts (rare in retrofits). GoodWe ESA is a widely deployed, highly trusted brand in Australia, offering excellent modularity, robust app monitoring, and outstanding cost-effectiveness for standard home sizes.

Can I add battery storage to my existing solar panels?

Yes. Both Sigenergy and GoodWe ESA work excellently as AC-coupled retrofits. We can install them alongside your existing, compliant solar inverter so you don't lose the value of your working gear. xTechs A-Grade electricians will assess your switchboard, inverter age, and network requirements before detailing the setup.

How do government battery rebates work in Victoria for 2026?

Eligible Victorian battery installations claim national Small-scale Technology Certificates (STCs) as an upfront discount. From 1 May 2026, the federal STC program transitions to a tiered capacity structure: 100% value on the first 14 kWh of capacity, 60% on 14–28 kWh, and 15% above 28 kWh. xTechs handles all compliance checks and rebate paperwork automatically.

What is a Virtual Power Plant (VPP) and can these batteries participate?

A VPP is a network of home batteries working together to support the grid. Both Sigenergy and GoodWe ESA systems are VPP-ready. When paired with smart electricity retailers like Amber (SmartShift) or GloBird (ZeroHero), you can automatically sell stored solar power to the grid during extreme price spikes, significantly boosting your system's return on investment.

Ready to secure your energy?

Book an in-house site assessment to check switchboard suitability and receive a compliant battery quote.

Book Assessment1300 983 247