How the GoodWe ESA works
The ESA bundles the hybrid inverter, battery modules and energy management into one outdoor cabinet. The power module sits on top; LFP battery modules stack beneath. Integrated remote shutdown is built in.
First, phase: single-phase power modules run from 3.0 to 9.999 kW rated AC, and three-phase from 5 to 29.999 kW. Second, coupling: the hybrid version acts as your solar inverter, while the AC-coupled version adds storage to existing solar without changing your current inverter.
Which GoodWe ESA suits your home
Start with your overnight consumption, because that is the gap the battery fills. Your Synergy bill or app will show it. Then add margin for cloudy days and anything you plan to add later.
Single-phase or three-phase. Match the ESA to your supply. Choose three-phase if you have a larger PV array or three-phase appliances you want supported in a blackout; the three-phase version is better suited to short motor loads.
Hybrid or AC-coupled. If you’re putting in solar and a battery together, the hybrid ESA is the simpler build. If your solar is already working, the AC-coupled ESA sits alongside it and keeps your existing inverter in place.
How many modules. For example, a Perth home using around 12 kWh overnight is well covered by two 8 kWh modules (16.64 kWh rated), with headroom for a cloudy day. If you want whole-home backup, both versions deliver it without extra gateways; for essentials only, we wire a smaller backup subboard, which is simpler and often cheaper.
The WA rebate scales with usable capacity between 5 and 10 kWh usable; any stack of 10 kWh usable or more receives the maximum of about $1,300.
GoodWe ESA sizes and configurations
ESA single-phase hybrid
ESA three-phase hybrid
ESA single-phase AC-coupled
ESA three-phase AC-coupled
GoodWe ESA at a glance
Rebates on a GoodWe ESA in Perth
Two rebates apply, and the WA scheme sits on top of the federal discount.
- Federal discount: applied up front through STCs. From 1 May 2026 it is tiered: full value on the first 14 kWh of usable capacity, 60% from 14 to 28 kWh, and 15% from 28 to 50 kWh. The subsidy steps down every six months until the scheme ends in 2030.
- WA Residential Battery Scheme: for Synergy customers, up to $1,300, scaling with usable capacity to 10 kWh. You must join a Virtual Power Plant program with Synergy or Horizon Power.
- Synergy Supported Solutions List: the ESA series is listed, which is the eligibility step the WA scheme relies on.
Works with
GoodWe Battery (Lynx)
GoodWe Inverters
GoodWe EV Charger
What installation involves
Site and switchboard assessment
We visit to inspect your existing solar, switchboard and the proposed spot. We discuss your evening power use, then recommend a capacity and a location that stays accessible and within temperature guidelines.
Choose your backup circuits
Backup only works if it is wired for it. You choose between essential circuits only, like the fridge, lighting and internet, or a wider set. What stays powered depends on capacity and wiring.
Installation day
Technicians mount the unit in a shaded, ventilated position, fit isolators and run cabling between the array, the unit and the switchboard. Every connection is tested before commissioning begins.
Network approval
The installation is documented and connected to meet Australian standards and Western Power requirements. Correct isolators, testing and paperwork are provided for meter approval, which avoids delays and rework.
Commissioning to AS/NZS 5139
We commission to the relevant standards, including AS/NZS 5139 for home batteries. We set charge and discharge settings, connect monitoring and confirm the system stores and releases energy correctly.
App walkthrough and aftercare
Before leaving, we show you how to read the app: battery charge, solar generation and household usage. We also explain aftercare tips and answer your questions.
For how this kind of job is planned, wired and commissioned, see our solar and battery packages service.
Things to know before you buy
Pros
Inverter and battery come in one cabinet. The IP66 cabinet is pre-wired, so it uses less wall space and has fewer separate components to manage.
Whole-home backup is built in. Switchover takes under 4 ms.
Sizing is flexible. You can mix 5 and 8 kWh modules, up to 54 kWh on single-phase or up to 108 kWh on three-phase.
Both the inverter system and the battery carry a 10-year warranty. Guaranteed throughput is 3.0 MWh per usable kWh.
Things to consider
Warranty support goes through your installer. Contact your installer first if you need to make a warranty claim.
GoodWe ESA questions Perth homeowners ask
Is the GoodWe ESA available in a 3-phase model?
Yes. The three-phase ESA covers rated AC power from 5 to 29.999 kW, with up to 108 kWh total storage.
What size battery can I build with the GoodWe ESA?
On single-phase, a stack up to 54 kWh mixing 5 and 8 kWh modules. On three-phase, up to 12 modules for 108 kWh.
Does the GoodWe ESA provide whole-home backup?
Yes. Single-phase delivers up to 63 A whole-home backup without a separate gateway; three-phase uses a dual-port design with an 80 A bypass.
What is the GoodWe ESA warranty?
The inverter system has a 10-year limited warranty on both versions. The battery modules carry a 10-year product and performance warranty.
Can the GoodWe ESA be added to an existing solar system?
Yes. The AC-coupled ESA sits alongside your existing inverter in single-phase or three-phase and still delivers whole-home backup.