Is the GoodWe ESA suitable for whole-home backup?

Yes. Its dual-port design with a 63 A internal bypass supports whole-home backup and switches to battery power in under 4 milliseconds during a grid outage, subject to your switchboard and load profile.

What battery chemistry does the GoodWe ESA use, and is it safe?

It uses LFP (lithium iron phosphate / LiFePO₄), the most thermally stable mainstream lithium chemistry. It is backed by 6-layer safety protection, AFCI 3.0 arc-fault detection and international safety certifications including IEC62619 and IEC63056, plus the Australian RCM mark.

Is the GoodWe ESA single-phase or three-phase?

This ESA model is a three-phase system rated 5–30 kW. GoodWe also makes single-phase ESA variants — Sunbridge can recommend the right one for your switchboard and energy needs.

Can the GoodWe ESA keep working during a blackout or run off-grid?

Yes. It supports both on-grid and off-grid parallel operation, and can be configured for whole-home backup or full off-grid use.

Sunbridge brand guide

GoodWe

Solar and storage technology,built around your home.

Name: GoodWe ESA Series Home Battery
Brand: GoodWe

Sunbridge reviews GoodWe's inverter and storage technology, product positioning and household suitability to help Australian homeowners understand where it may fit within a broader home energy plan.

Reviewed for Australian homes

Explore GoodWe products

Solar BatteryBrand / 02 of 15

At a glance

Hybrid inverter + battery
High round-trip efficiency
Trusted global brand

Solar invertersBattery storageHybrid systemsEnergy monitoring

About GoodWe

Solar and storage technology built around practical home energy needs

GoodWe combines solar inverter technology, battery storage and energy monitoring to support efficient residential energy systems.

GoodWe develops residential solar inverters, battery systems and energy management technology. Its solutions are designed to coordinate solar generation and storage within practical home energy installations.

Solar and storage integration
Inverters and battery systems are designed to coordinate residential solar generation and energy storage.
Established inverter platform
A broad inverter range supports different residential system sizes and installation requirements.
Energy monitoring
Monitoring tools help households understand solar production, storage and electricity consumption.

Solar invertersBattery storageHybrid systemsEnergy monitoring

In Sunbridge’s eyes

A quiet value pick that grew into a flagship contender

GoodWe came to Australia early — on the ground here since around 2012, when a Chinese inverter brand with a Melbourne office was still a rarity. For years it was the quiet value pick: solid hybrid inverters and Lynx Home batteries that installers trusted but few shouted about. The ESA all-in-one changed the conversation — a genuinely modern, integrated battery system that put GoodWe squarely in the flagship fight.

Easy to install — the ESA’s all-in-one design cuts wiring and commissioning time.
Strong build and safety — IP66, fanless under 30 dB, six-layer battery protection and AFCI 3.0 arc detection.
Real value for money — flagship features without the flagship price.
Stable and backed — 10-year inverter and battery warranties, and a No.3-in-Australia shipping track record.

Best suited to

households chasing a well-priced, whole-home-backup all-in-one from a proven global maker.

Available products

GoodWe products available through Sunbridge

Explore products available through Sunbridge, with guidance based on your household energy use, existing solar system, backup expectations and future requirements.

GoodWe · Solar Battery

GoodWe ESA Series Home Battery

GoodWe ESA Series — All-in-One Home Battery Storage

Compare battery options

GoodWe ESA Series Home Battery product image

Up to 108 kWhScalable capacity
3-phaseWhole-home backup
10-yearWarranty · LFP

GoodWe ESA Series Home Battery · with Sunbridge

The right fit for your home — and fully backed

Why the ESA Series Home Battery fits your home

Large three-phase homes

A factory pre-wired all-in-one inverter and LFP battery, scalable to 108 kWh across all three phases for larger households.

Fast, tidy installation

Because the inverter and battery are integrated rather than bolted together from separate brands, installation is faster with fewer points of failure.

Whole-home backup

Backup switchover under 4 ms keeps essential and whole-home loads running through an outage.

Smart energy management

An AI-driven EMS shifts usage to the cheapest tariff periods, and the SolarGo app shows generation, storage and consumption at a glance.

Designed, installed & backed by Sunbridge

10 yearsProduct & performance warranty

70%Capacity retained at 10 years

ACLAustralian Consumer Law protected

Warranty & compliance

The GoodWe ESA Series battery modules (GW5.1-BAT-D-G21 and GW8.3-BAT-D-G21) are covered by GoodWe’s Limited Warranty for the BAT Series, which has two parts.
A 10-year product warranty covers the hardware — the electronics and the enclosure — against defects for ten years from the warranty start date.
A 10-year performance warranty guarantees that, over those ten years, the battery retains at least 70% of its usable energy, or until it reaches its minimum guaranteed energy throughput — whichever comes first. That throughput is set at 3 MWh of DC energy for every kWh of usable battery capacity, based on the equivalent of one full cycle per day. Capacity expansion is supported, so further modules can be added over time.
These are the manufacturer’s terms; your guarantees under the Australian Consumer Law apply in addition. Sunbridge confirms the warranty terms that apply to your configuration and registers the warranty on your behalf as part of the installation.

Rebates & payback guidance

Home battery storage can be eligible for government rebates and incentives, which change over time and vary by state and by household. A well-chosen, correctly sized GoodWe ESA system — paired with the right rebate — can meaningfully shorten your payback period.
Sunbridge handles rebate guidance as part of the quote process: we check current eligibility, factor available incentives into your system design, and show you the expected payback based on your actual usage. See our battery rebate guidance for more, and we will confirm what applies to your address when you request a quote.

The detail

Full technical specifications

Battery

Chemistry: LFP (LiFePO₄)
Battery module options: 5 / 6 / 8 / 9 kWh (nominal)
Rated energy per module: 5.12 / 6.0 / 8.32 / 9.0 kWh
Usable energy per module: 5.0 / 5.8 / 8.0 / 8.7 kWh
Depth of discharge (DoD): 98%
Total usable capacity: Up to 108 kWh (12 modules)
Cycle life: ≥ 8,000 cycles (≥ 10,000 on selected modules)
Battery ingress protection: IP66

Inverter & power

Inverter type: Three-phase hybrid (all-in-one)
Rated power: 5 – 30 kW
Max. efficiency: Up to 98.2%
European (weighted) efficiency: Up to 97.4%
Battery-to-AC efficiency: 98.0%
Charge / discharge rate: Up to 1C
PV oversizing: Up to 200% DC
Number of MPPTs: 3 – 4
Operating temperature: −35 °C to +60 °C
Max. operating altitude: 4,000 m
Inverter ingress protection: IP66

Backup & system

On/off-grid switchover: < 4 ms
Whole-home backup: Dual-port, 63 A internal bypass
Grid operation: On-grid & off-grid parallel supported
Cooling: Smart fan, noise as low as 30 dB

Safety & certification

Protection: 6-layer safety, AFCI 3.0
Surge protection: Type II (AC & DC)
Battery safety standards: IEC62619, IEC63056, IEC60730
Inverter / EMC: EN62477, IEC62040, CE, RCM

Monitoring & communication

Energy management: AI-driven EMS, dynamic tariff optimisation
App & portal: SolarGo & SEMS+
Communication: RS485, Wi-Fi + LAN + Bluetooth, 4G (optional)
Protocols: Modbus-RTU / TCP, CAN (to BMS)

Specifications are based on the GoodWe ESA Series 5–30 kW three-phase datasheet. Exact figures depend on the chosen configuration and battery modules; Sunbridge will confirm the right setup and final specifications for your home.

A closer look

ESA Series Home Battery gallery

GoodWe ESA Series performance and design overview

Integrated inverter head unit with cooling

The headline numbers — and what they actually mean at home

“Up to 30% off your bill” — the AI picks the timing

A battery only saves money based on when it charges and discharges. The ESA reads tomorrow’s forecast, your usage pattern and your tariff, then plans the day automatically — soak up solar before a cloudy afternoon, hold charge for the 4–9 pm peak. The 30% is GoodWe’s figure for what that scheduling adds over a battery that just charges whenever the sun is out.

Up to 30%: Extra saving from smart scheduling
Daily: Re-plans around weather and prices
Hands-off: Nothing for you to set

5–108 kWh — buy for today, expand later

A typical Australian home uses 8–12 kWh between sunset and sunrise, so around 10 kWh covers most households’ evenings. The ESA stacks 5–9 kWh modules up to 108 kWh, and you can add modules — even different sizes — to an existing stack years later when an EV or a heat pump arrives.

≈ 10 kWh: Covers a typical evening + overnight
108 kWh: Maximum with 12 modules
Later is fine: Expand after installation

“1C” — fills or empties in about an hour

C-rate is how fast a battery moves energy relative to its size. At 1C a 10 kWh battery takes in or pushes out 10 kW; many home batteries are 0.5C and take twice as long. It matters on short winter days, and when the oven, aircon, hot water and EV charger all come on at once.

≈ 1 hour: Full charge or discharge
200%: DC oversizing — fit twice the panels
≥ 8,000: Cycles — 20+ years of daily use

30 dB and under 4 ms — you never notice it working

30 dB is about a quiet library; a domestic fridge runs at 40–45 dB, so the unit can go on the wall that suits your switchboard rather than the far side of the house. And when the grid drops, the switch to battery takes under four thousandths of a second — computers do not reboot, the modem stays online. A generator takes 10–30 seconds.

30 dB: TÜV-certified low noise
< 4 ms: Blackout switchover — nothing reboots
63 A: Bypass for whole-home backup

Guide · 8 min readBattery spec sheets decoded: what 200%, 1C and “under 4 ms” really meanEvery number on a battery brochure, translated into what it changes in your house — plus a six-line checklist for comparing two datasheets.

GoodWe · Solar Battery

GoodWe ESA Series 3–10kW (Single-Phase)

GoodWe ESA Series — Single-Phase All-in-One Home Battery

Compare battery options

GoodWe ESA Series 3–10kW (Single-Phase) product image

3–10 kWSix inverter sizes
Single-phaseWhole-home backup
10-yearWarranty · LFP

GoodWe ESA Series 3–10kW (Single-Phase) · with Sunbridge