Anker SOLIX vs Sigenergy home batteries, matched by size
We install both brands at two matching sizes, both three-phase. Of the two, Anker SOLIX costs $201 less at one, and at the other they are within $100, without backup. Partial backup adds $500 on Anker SOLIX and $1,456 to $1,681 on Sigenergy, which includes a Sigen Gateway. Anker SOLIX's single-phase system works beside an existing solar inverter, so it has no like-for-like Sigenergy match.
We only list systems we supply and install, priced from our written quotes. Valid until 19 November 2026.
The short answer
- Of the two matched sizes, Anker SOLIX costs $201 less at one, and at the other they are within $100, without backup.
- Partial backup adds $500 on Anker SOLIX, and $1,456 (single-phase) or $1,681 (three-phase) on Sigenergy, which includes a Sigen Gateway. With partial backup, Anker SOLIX costs $1,142 to $1,382 less.
- Both carry a 10-year battery warranty.
- Anker SOLIX systems take solar panels up to 20 kW and Sigenergy up to 12 to 48 kW, depending on the inverter.
- Anker SOLIX's single-phase system (30 kWh usable) is AC-coupled: it works beside an existing solar inverter, so it is not compared like for like with Sigenergy's hybrid systems.
Matching sizes
Each row pairs systems built for the same supply, with usable energy within 10% and the same inverter output.
| Usable energy | Inverter | Anker SOLIX | Sigenergy | Difference | With partial backup | Compare |
|---|---|---|---|---|---|---|
| Three-phase homes | ||||||
| 20 and 18 kWh | 10 kW | $10,022Quote | $9,983QuoteAlso with a 15 kW inverter: $11,044 | Within $100 | Anker SOLIX $1,142 less | |
| 25 and 27 kWh | 10 kW | $11,644Quote | $11,845QuoteAlso with a 15 kW inverter: $12,749 | Anker SOLIX $201 less | Anker SOLIX $1,382 less | |
Anker SOLIX 20 kWh usable and Sigenergy 18 kWh usable side by side
Three-phase · 10 kW inverters · Without backup · Figures from the manufacturers' datasheets, prices from our written quotes.
- Both are within $100 of each other installed, without backup.
- Partial backup adds $500 on Anker SOLIX and $1,681 on Sigenergy, which includes a Sigen Gateway.
- Anker SOLIX stores 2 kWh more usable energy.
- Sigenergy's batteries supply up to 9.2 kW on their own, less than its 10 kW inverter.
- Anker SOLIX takes solar panels up to 20 kW and Sigenergy up to 16 kW.
Same on both: LFP battery cells, 10-year battery and inverter warranties, 70% capacity at the end of the warranty, IP66 batteries and inverters, wall or floor mounting, hybrid inverters.
 |  | |
|---|---|---|
| Price | ||
| No differences in price. | ||
| Installed price, rebate taken off | $10,022 | $9,983 |
| Price per usable kWh | $501Lower | $555 |
| Federal battery rebate included | −$4,403 | −$4,107 |
| Price before the rebate | $14,425 | $14,090 |
| Quote valid until | 19 November 2026 | 19 November 2026 |
| Energy and power | ||
| No differences in energy and power. | ||
| Energy you can use | 20 kWhMore | 18 kWh |
| Rated size, as quoted | 20 kWh | 18 kWh |
| Power it can supply at once | 10 kW | 10 kWThe batteries alone supply up to 9.2 kW |
| Battery power on its own | Not limited by the batteries | Up to 9.2 kW (below the inverter) |
| Blackout backup power | 10 kWUp to 3.3 kW on each phase | 10 kWUp to 3.3 kW on each phase |
| Add more battery later | Up to 6 modulesUp to 30 kWh | Up to 6 modulesUp to 54 kWh, any time |
| Whole-home backup | With Power Dock Pro | With Sigen GatewayGateway included in the backup option |
| Virtual power plants | Origin, Amber (beta), GloBird | Amber, GloBird, Powow |
| Time to fill from the grid | About 2 hoursAt up to 10 kW | About 2 hoursAt up to 9.2 kW |
| Solar | ||
| No differences in solar. | ||
| Solar panels it can take | 20 kWHigher | 16 kW |
| With your existing solar | Works beside your inverterNew panels can connect to it too | Works beside your inverterNew panels can connect to it too |
| Warranty | ||
| No differences in warranty. | ||
| Battery warranty | 10 years | 10 years |
| Inverter warranty | 10 years | 10 years |
| Capacity at the end of the warranty | 70% | 70% |
| Warranty | 10 yearsKeeps at least 70% of its capacity | 10 yearsKeeps at least 70% of its capacity |
| Installation | ||
| No differences in installation. | ||
| Mounting | Wall or floor | Wall or floor |
| Heaviest single piece | 51 kgLighter | 78 kg |
| Total weight | 234 kg | 192 kg |
| Weather rating | Battery IP66, inverter IP66 | Battery IP66, inverter IP66 |
| Battery cells | LFP | LFP |
| Where it can go | Wall or floorIP66 · -20 to 55 °C | Wall or floorIP66 · -20 to 55 °C |
| Inverter noise | 30 dB | Not on the Sigenergy datasheet |
| Size installed | H 1,960 × W 670 × D 150 mmInverter on top, heaviest piece 51 kg, 243 kg in total | H 910 × W 850 × D 260 mmInverter on top, heaviest piece 78 kg, 197 kg in total |
| View the quoteBook an InspectionQuoted as Anker SOLIX 20 kWh three-phase with 10 kW inverter | View the quoteBook an InspectionQuoted as Sigenergy 18 kWh three-phase with 10 kW inverter | |
Next step
20 kWh usable · $10,022
18 kWh usable · $9,983
Equipment and datasheets
Anker SOLIX 20 kWh usable: 4 × X1-B5-H battery modules (5 kWh usable each) and one X1-H10K-T inverter. Figures from the Anker SOLIX datasheets for these models.
Sigenergy 18 kWh usable: 2 × SigenStor BAT 10.0 battery modules (9 kWh usable each) and one SigenStor EC 10.0 TP inverter. Figures from the Sigenergy datasheets for these models.
Close, but not like for like
Anker SOLIX 30 kWh usable with a 6 kW inverter ($10,775) and Sigenergy 27 kWh usable with a 10 kW inverter ($11,722), single-phase.
Anker SOLIX's system works beside an existing solar inverter (AC-coupled), while Sigenergy's connects solar panels directly, so they suit different homes. Their inverters also differ (6 and 10 kW).
Other sizes we install (10 Sigenergy)
- Sigenergy 18 kWh usable, single-phase, 6 kW inverter · $8,068 · View the quote
- Sigenergy 18 kWh usable, single-phase, 10 kW inverter · $9,887 · View the quote
- Sigenergy 36 kWh usable, single-phase, 10 kW inverter · $14,509 · View the quote
- Sigenergy 45 kWh usable, single-phase, 10 kW inverter · $17,407 · View the quote
- Sigenergy 36 kWh usable, three-phase, 10 kW inverter · $14,687 · View the quote
- Sigenergy 36 kWh usable, three-phase, 15 kW inverter · $15,519 · View the quote
- Sigenergy 45 kWh usable, three-phase, 15 kW inverter · $18,256 · View the quote
- Sigenergy 45 kWh usable, three-phase, 20 kW inverter · $19,378 · View the quote
- Sigenergy 54 kWh usable, three-phase, 20 kW inverter · $23,414 · View the quote
- Sigenergy 54 kWh usable, three-phase, 30 kW inverter · $23,651 · View the quote
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 Anker SOLIX and Sigenergy
Is Anker SOLIX or Sigenergy better?
Neither is better for every home. Of the two matched sizes, Anker SOLIX costs $201 less at one, and at the other they are within $100, without backup. Anker SOLIX systems take solar panels up to 20 kW and Sigenergy up to 12 to 48 kW, depending on the inverter. The inspection confirms which suits your home.
Does backup cost more with Sigenergy?
Partial backup adds $500 on Anker SOLIX, and $1,456 (single-phase) or $1,681 (three-phase) on Sigenergy, which includes a Sigen Gateway. With partial backup, Anker SOLIX costs $1,142 to $1,382 less. Full house backup adds $800 on Anker SOLIX and $1,981 on Sigenergy, on three-phase packages only.
Which has the longer warranty?
Both carry a 10-year battery warranty. Inverter warranties: Anker SOLIX 10 years, Sigenergy 10 years.
Can I compare other sizes or brands?
Yes. The size pages compare every system of about 20, 30 or 40 kWh, and the comparison page covers every size and brand we install.
Why are some sizes not compared like for like?
Anker SOLIX's system works beside an existing solar inverter (AC-coupled), while Sigenergy's connects solar panels directly, so they suit different homes. Their inverters also differ (6 and 10 kW).
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 · New Energy Tech Consumer Code Approved Seller.