Compare 30 kWh home batteries
Anker SOLIX 30 kWh usable and ESY 29.2 kWh usable side by side
Single-phase · Without backup · Figures from the manufacturers' datasheets, prices from our written quotes.
 |  | |
|---|---|---|
| Installed price, rebate taken off | $10,775 | $7,680Lower |
| Energy you can use | 30 kWhMore | 29.2 kWhRated 30.72 kWh |
| Price per usable kWh | $359 | $263Lower |
| Blackout backup power | 6 kWSwitches over in 10 ms | 10 kWSwitches over in up to 10 msHigher |
| Whole-home backup | Selected circuits only | Built in |
| Power it can supply at once | 6 kW | 10 kWHigher |
| Time to fill from the grid | About 5 hoursAt up to 6 kW | About 3 hoursAt up to 10 kWFaster |
| With your existing solar | Works beside your inverterCharges from your existing panels | Works beside your inverterNew panels can connect to it too |
| Where it can go | Wall or floorIP66 · -20 to 55 °C | Floor onlyIP66 · charge 3 to 55 °C |
| Inverter noise | 35 dB | 55 dB |
| Warranty | 10 yearsKeeps at least 70% of its capacity | 10 yearsKeeps at least 70% of its capacity |
| Add more battery later | Already at the most modules | Already at the most modules |
| Virtual power plants | Origin, Amber (beta), GloBird | Origin |
| Solar panels it can take | Works beside your existing solar inverter | 18 kW |
| Size installed | H 1,485 × W 1,540 × D 150 mm2 stacks side by side, inverter on top, heaviest piece 51 kg, 334 kg in total | H 2,008 × W 600 × D 305 mmInverter on top, heaviest piece 57 kg, 363 kg in total |
| View the quoteBook an InspectionQuoted as Anker SOLIX 30 kWh single-phase with 6 kW inverter | View the quoteBook an InspectionQuoted as ESY 30.72 kWh single-phase with 9.99 kW inverter | |
Next step
30 kWh usable · $10,775
29.2 kWh usable · $7,680
Why prices differ at about 30 kWh
This group has nine single-phase systems from six brands, holding 26.1 to 34.8 kWh usable. Installed prices run from $6,998 to $12,776 without backup, or $240 to $444 per usable kWh. The lowest price per usable kWh here, ESY 29.2 kWh usable at $240, has a 6 kW inverter that takes solar panels up to 8 kW. Most systems here have 10 kW inverters that take up to 20 kW. Backup is extra on every system. Partial backup adds $500 on Anker SOLIX, EcoFlow, ESY, GoodWe and SolaX and $1,456 on Sigenergy, which includes a Sigen Gateway. Anker SOLIX 30 kWh usable works beside an existing solar inverter (AC-coupled). The others are hybrid systems that connect solar panels directly. If you already have solar, the inspection works out whether your current inverter stays; removing an old inverter is a priced option on each quote.
This group has 12 three-phase systems from six brands, holding 25 to 34.8 kWh usable. Installed prices run from $9,056 to $14,676 without backup, or $310 to $472 per usable kWh. Backup is extra on every system. Partial backup adds $500 on Anker SOLIX, EcoFlow, ESY, GoodWe and SolaX and $1,681 on Sigenergy, which includes a Sigen Gateway. The batteries supply less than the inverter on three systems here: ESY 29.2 kWh usable with the 15 kW inverter (up to 14.6 kW), GoodWe 26.1 kWh usable with the 15 kW inverter (up to 13.5 kW) and Sigenergy 27 kWh usable with the 15 kW inverter (up to 13.8 kW).
Every system here uses LFP battery cells, with batteries and inverters rated IP65 or IP66, and a battery warranty that keeps at least 70% of capacity at the end of its term.
What changes at about 30 kWh
The federal battery rebate (Cheaper Home Batteries Program) is worked out on usable energy, at a rate of $252 per kWh on the quote date: 100% of the rate for the first 14 kWh, 60% of the rate for 14 to 28 kWh, 15% of the rate for 28 to 50 kWh. In this group it comes to $5,180 to $5,883 per system, or $169 to $207 per usable kWh, less per kWh than on smaller systems. The rebate is set by the installation date, and eligibility is confirmed before installation.
Going one size up with the same brand, supply and inverter adds $281 to $2,842 from this group, or $100 to $426 for each extra kWh of usable energy.
Each step up (12)
| System | From | To | Adds | Per extra kWh |
|---|---|---|---|---|
| GoodWe, single-phase, 10 kW inverter | 26.1 kWh usable | 32 kWh usable | $2,050 | $347 |
| GoodWe, single-phase, 10 kW inverter | 32 kWh usable | 34.8 kWh usable | $281 | $100 |
| GoodWe, single-phase, 10 kW inverter | 34.8 kWh usable | 40 kWh usable | $2,215 | $426 |
| GoodWe, three-phase, 10 kW inverter | 26.1 kWh usable | 32 kWh usable | $2,052 | $348 |
| GoodWe, three-phase, 10 kW inverter | 32 kWh usable | 40 kWh usable | $2,495 | $312 |
| GoodWe, three-phase, 15 kW inverter | 26.1 kWh usable | 32 kWh usable | $2,052 | $348 |
| GoodWe, three-phase, 15 kW inverter | 32 kWh usable | 34.8 kWh usable | $281 | $100 |
| GoodWe, three-phase, 15 kW inverter | 34.8 kWh usable | 40 kWh usable | $2,215 | $426 |
| Sigenergy, single-phase, 10 kW inverter | 27 kWh usable | 36 kWh usable | $2,787 | $310 |
| Sigenergy, three-phase, 10 kW inverter | 27 kWh usable | 36 kWh usable | $2,842 | $316 |
| Sigenergy, three-phase, 15 kW inverter | 27 kWh usable | 36 kWh usable | $2,771 | $308 |
| SolaX, single-phase, 10 kW inverter | 27.5 kWh usable | 36.7 kWh usable | $2,427 | $264 |
Packages are named by their rated size. We group them by usable energy, so GoodWe 36 kWh (34.8 kWh usable) is in this group.
How we compare
Prices come from Sunbridge Energy's written quotes, issued 20 October 2026 and valid until 19 November 2026. Each includes GST, the listed equipment and standard installation and commissioning, with the federal battery rebate (Cheaper Home Batteries Program) deducted at the rate for an installation on the quote date. The rebate is set by the installation date, and eligibility is confirmed before installation. Prices are the same in NSW, VIC and QLD.
These options and site work can add to a price, and each written quote sets them out: garage installation +$500, new concrete slab +$250, cable beyond 5 m +$30 per metre, remove old inverter +$300, remove old battery +$600, remove old inverter and battery +$900 and switchboard upgrade up to $1,500.
Specifications come from the manufacturers' datasheets for each battery module and inverter. Where a datasheet we hold leaves a figure out, we say so rather than estimate it. For 32 of the 62 systems, the inverter datasheet gives no separate limit for power drawn from the battery, so we show the inverter's output and, where it is lower, the batteries' own rating instead of a combined figure. Price per usable kWh and warranty energy are calculated by Sunbridge from these figures.
We only compare systems built for the same supply, and we group sizes by usable energy. Brand comparisons pair systems with usable energy within 10% and the same inverter output, and say so when they can't. A figure counts as different only when the gap is large enough to matter: $100 of price, $10 per usable kWh, 0.5 kWh of usable energy, 0.5 kW of inverter output, 1 kW of solar input, one year of warranty, 5% of warranty energy or 5 kg of weight.
We supply and install every system on this page and earn from each installation, so this is not an independent review. We only list the six brands we install. Brands we don't install, such as Tesla, Sungrow and BYD, are not here.
Questions about home batteries of about 30 kWh
How much does a home battery of about 30 kWh cost installed?
We install 21 systems with 25 to 35 kWh of usable energy. Single-phase systems cost $6,998 to $12,776 and three-phase systems $9,056 to $14,676, including GST and standard installation, after the federal battery rebate and without backup. Each links to its written quote, valid until 19 November 2026.
Which battery of about 30 kWh is best?
No single system is best for every home. Among single-phase systems here, ESY 29.2 kWh usable has the lowest installed price ($6,998, with a 6 kW inverter) and GoodWe 34.8 kWh usable has the most usable energy. Among three-phase systems, GoodWe 34.8 kWh usable has the most usable energy. Compare inverter size, solar input and warranty too, which the list above shows.
Why do systems of about 30 kWh differ so much in price?
Price per usable kWh runs from $240 to $444 for single-phase systems and $310 to $472 for three-phase systems. Among single-phase systems, the lowest, ESY 29.2 kWh usable at $240, has a 6 kW inverter that takes solar panels up to 8 kW, while most have 10 kW inverters that take up to 20 kW. Backup is extra on every system. Partial backup adds $500 on Anker SOLIX, EcoFlow, ESY, GoodWe and SolaX and $1,456 on Sigenergy, which includes a Sigen Gateway.
Why is the rebate per kWh lower on bigger batteries?
The federal battery rebate (Cheaper Home Batteries Program) is worked out on usable energy, at a rate of $252 per kWh on the quote date: 100% of the rate for the first 14 kWh, 60% of the rate for 14 to 28 kWh, 15% of the rate for 28 to 50 kWh. In this group it comes to $5,180 to $5,883 per system, or $169 to $207 per usable kWh, less per kWh than on smaller systems. The rebate is set by the installation date, and eligibility is confirmed before installation.
Is about 30 kWh the right size for my home?
Look at how much electricity you use between about 4pm and 7am, in your retailer's app or on your bill. A battery's usable energy is what it can supply over that time. We work through the size with you at the inspection.
More comparisons
What happens when you book
Choose a time and the inspection goes straight into your local branch's calendar. It takes about 20 minutes. We confirm your supply, where the system goes and whether anything changes the price, before anything is final.
Sunbridge Energy supplies and installs every system here through its Sydney, Melbourne, Brisbane and Gold Coast branches. Sigenergy Certified Installer · GoodWe Verified Installer, installer code G10000622 · New Energy Tech Consumer Code Approved Seller.