The Sigenergy battery price in Australia in November 2026 is about A$7,900 to A$12,000 fully installed for an 18 kWh SigenStor (two 9 kWh modules with a built-in hybrid inverter) after the federal battery discount, or roughly A$12,100 to A$16,400 before it (the before-discount figure is our calculation: published price plus the discount). Published prices run from about A$6,300 installed for a single 9 kWh module to about A$22,000 for a 54 kWh stack.
Independent desk research: Solar Cobber requested no quotes and was not paid by Sigenergy or any retailer named. For specs, warranty and the 2025 recall, see our Sigenergy SigenStor review.
Key facts
- An 18 kWh Sigenergy SigenStor costs about A$7,900 to A$12,000 installed in Australia after the federal battery discount, based on prices published by Grow Energy, SolarQuotes and LiFePO4 Australia and read on 12 November 2026.
- SolarQuotes lists Sigenergy SigenStor hardware, after the federal discount and before installation, at about A$4,900 for 18 kWh, A$7,200 for 27 kWh, A$11,100 for 36 kWh, A$14,700 for 45 kWh and A$17,600 for 54 kWh as at 12 November 2026.
- Single Sigenergy battery modules retail for about A$2,730 (5 kWh BAT 5.0), A$3,345 to A$3,399 (8 kWh BAT 8.0) and A$3,489 to A$3,499 (9 kWh BAT 10.0) before any discount or installation, as at 12 November 2026.
- The federal Cheaper Home Batteries Program is worth about A$4,200 to A$4,400 on an 18 kWh Sigenergy SigenStor installed by 31 December 2026, and about A$700 less from 1 January 2027.
- The Sigen Energy Gateway for blackout backup costs about A$900 on single phase and A$1,100 to A$1,200 on three phase at published November 2026 prices.
Sigenergy SigenStor price list (November 2026)
A Sigenergy SigenStor costs between about A$6,300 and A$22,000 installed after the federal discount, depending mainly on the number of battery modules. The table shows each common capacity with a published Australian price, read on 12 November 2026 unless another month is given.
| Usable capacity (modules) | Installed price before federal discount | Federal discount (to 31 Dec 2026) | Installed price after discount | Source |
|---|---|---|---|---|
| 9 kWh (1 x BAT 10.0) | About A$8,600 to A$8,700 | A$2,320 to A$2,440 | A$6,300 | Grow Energy |
| 13 kWh (BAT 5.0 + BAT 8.0) | About A$12,600 to A$14,500 | A$3,340 to A$3,520 | A$9,300 to A$11,000 | SolarQuotes |
| 15.6 kWh (2 x BAT 8.0 or 3 x BAT 5.0) | A$14,500 to A$16,500 | A$3,840 to A$4,040 | A$9,800 to A$12,800 | SolarQuotes; Greenlight Solar, July 2026 |
| 18 kWh (2 x BAT 10.0) | About A$12,100 to A$16,400 | A$4,220 to A$4,440 | A$7,900 to A$12,000 | Grow Energy, SolarQuotes, LiFePO4 Australia |
| 27 kWh (3 x BAT 10.0) | About A$15,400 to A$19,900 | A$5,620 to A$5,920 | A$9,800 to A$13,990 | Grow Energy, SolarQuotes, LiFePO4 Australia |
| 36 kWh (4 x BAT 10.0) | About A$18,800 to A$23,400 | A$6,080 to A$6,400 | A$12,700 to A$16,990 | Grow Energy, SolarQuotes, LiFePO4 Australia |
| 45 kWh (5 x BAT 10.0) | About A$21,800 to A$26,800 | A$6,420 to A$6,760 | A$15,400 to A$19,990 | Grow Energy, SolarQuotes, LiFePO4 Australia |
| 54 kWh (6 x BAT 10.0) | About A$27,200 to A$29,000 | A$6,610 to A$6,960 | A$20,600 to A$21,990 | SolarQuotes; LiFePO4 Australia |
How to read the table:
- Grow Energy (Victoria) prices are installed, with a 5 kW single-phase controller and no Gateway. It labels each module 10 kWh; we treated them as 9 kWh usable BAT 10.0 modules.
- LiFePO4 Australia prices are installed with a 10 kW single-phase controller, so they sit at the top of each range.
- SolarQuotes lists hardware after the discount; we added the A$3,000 it assumes for a simple installation. Its 13 and 15.6 kWh figures are installed examples from a page last updated in May 2026.
- Greenlight Solar (New South Wales) publishes before and after prices. Elsewhere, the before-discount column is our calculation: the published price plus the discount.
The older 5 kWh and 8 kWh module stacks now look dearer than the 9 kWh module stacks (13 kWh from A$9,300 installed, 18 kWh from A$7,900), but those prices date from earlier in 2026.
We found no published installed price for a single 5 kWh or 8 kWh module system. As hardware only, a BAT 5.0 module (A$2,730 at Buzz.energy) plus a 5 kW single-phase controller (A$2,999 at LiFePO4 Australia) is about A$5,700 before the discount and installation (our addition).
Sigenergy 32 kWh price
A 31.2 kWh Sigenergy SigenStor (four BAT 8.0 modules, often sold as “32 kWh”) is about A$16,700 installed after the federal discount, per a SolarQuotes example last updated in May 2026; the newer 36 kWh stack is A$12,700 to A$16,990 in November 2026.
Gateway and EV DC charger module costs
The Sigen Energy Gateway and the EV DC charging module are optional and priced separately. The table shows published Australian retail prices read on 12 November 2026.
| Add-on | Published price | Source |
|---|---|---|
| Sigen Energy Gateway, single phase | A$899 to A$900 | LiFePO4 Australia, Grow Energy |
| Sigen Energy Gateway, three phase (home) | A$1,100 to A$1,199 | Grow Energy, LiFePO4 Australia |
| EV DC charging module, 12.5 kW | A$3,688 to A$4,200 | LiFePO4 Australia, Grow Energy; before installation |
| EV DC charging module, 25 kW | A$4,688 to A$4,900 | LiFePO4 Australia, Grow Energy; before installation |
The Sigen Energy Gateway is the device that isolates the home from the grid in a blackout so the battery can keep supplying power. The EV DC charging module does not add to the federal discount, which is calculated on battery capacity only.
What changes the price
Module count sets most of the price; the controller, phases, backup and site work set the rest.
- Controller size. Grow Energy charges A$200 more for a 6 kW single-phase controller than a 5 kW, A$1,400 for 8 kW, A$1,650 for 10 kW and A$1,900 for 12 kW.
- Three phase. Grow Energy adds A$1,100 for a 5 kW three-phase controller, rising to A$4,300 for 30 kW. See single vs three phase power for solar.
- Switchboard and cabling. Grow Energy quotes A$250 to A$3,000 for switchboard upgrades and A$300 per extra 10 metres of AC cable.
How the federal battery discount applies
The federal Cheaper Home Batteries Program takes about A$258 to A$272 off each of the first 14 usable kWh of a battery installed between 1 May and 31 December 2026, and much less above that. It works through small-scale technology certificates (STCs), which your installer sells and deducts from the invoice.
As at November 2026, the Department of Climate Change, Energy, the Environment and Water lists a factor of 6.8 STCs per usable kWh, applied at 100% up to 14 kWh, 60% from 14 to 28 kWh and 15% from 28 to 50 kWh. We have valued each STC at A$38 to A$40 (Demand Manager’s spot market showed A$39.60 on 12 November 2026 and the Clean Energy Regulator’s Clearing House price is A$40; the lower end is our assumption for what installers pass on), and rounded certificates down to whole numbers. Our guide to battery rebates by state covers state top-ups.
Worked example, 18 kWh Sigenergy SigenStor installed in December 2026:
- First 14 kWh at 100%: 14 kWh.
- Next 4 kWh at 60%: 2.4 kWh.
- Discounted capacity: 16.4 kWh x 6.8 = 111 STCs.
- 111 STCs x A$38 to A$40 = A$4,218 to A$4,440.
The same sum for a 36 kWh SigenStor gives 160 STCs, or A$6,080 to A$6,400, because most of the extra capacity sits in the 60% and 15% bands.
The factor falls to 5.7 on 1 January 2027, when an 18 kWh SigenStor earns 93 STCs, worth A$3,534 to A$3,720, or about A$700 less. The factor is set by the installation date. Ask which factor an advertised “after rebate” price assumes.
SolarQuotes reported 8.76 kWh usable for the BAT 10.0 in December 2025, while Sigenergy’s datasheet states 9.0 kWh, so check the capacity on your quote’s STC line and that the configuration is on the Clean Energy Council approved batteries list.
Sigenergy SigenStor vs rivals on price
Sigenergy SigenStor is priced close to the budget all-in-one batteries and well below the Tesla Powerwall 3 per kWh, on SolarQuotes’ figures. The table shows SolarQuotes prices after the federal discount, including GST and excluding installation, read on 12 November 2026; listings update at different times, so gaps are approximate.
| Battery | Usable capacity | Price after federal discount, before installation | Inverter |
|---|---|---|---|
| Sigenergy SigenStor | 18 kWh | About A$4,900 | Built in |
| GoodWe ESA | 16 kWh | About A$4,600 | Built in |
| AlphaESS SMILE-G3-S5 | 19.2 kWh | About A$7,800 | Built in |
| Sungrow SBR | 16 kWh | About A$9,300 | Separate Sungrow hybrid inverter needed |
| Tesla Powerwall 3 | 13.5 kWh | About A$10,000 including Gateway | Built in |
Sigenergy vs Sungrow
On published November 2026 prices, a Sigenergy SigenStor is cheaper than a Sungrow SBR of similar size, and it includes the inverter. The Sigenergy warranty ends at 10 years or a set energy throughput, whichever comes first. Our Sungrow battery price guide covers that side.
Sigenergy reviews: what owners say
Owner ratings differ sharply by platform: SolarQuotes shows 1,994 Sigenergy reviews as at 12 November 2026, of which 1,897 are five-star, while ProductReview.com.au shows 2.7 out of 5 from 19 reviews.
Is it worth it? A worked payback example
An 18 kWh Sigenergy SigenStor pays for itself in about 6 to 9 years for a household that uses most of its capacity every day, and does not pay back within its warranty for a household with low evening use. This is our own calculation, not a measured result.
Assumptions: a Sydney home on the Ausgrid network paying the 2026-27 Default Market Offer usage rate of 33.1c/kWh (see our average electricity bill guide), a 3c/kWh feed-in rate, and so a net saving of 30c per kWh supplied by the battery. Battery losses and tariff changes are ignored.
| Household | Battery energy used per day | Saving per year | Payback at A$7,900 | Payback at A$12,000 |
|---|---|---|---|---|
| High evening use, EV or electric heating | 12 kWh | About A$1,310 | 6.0 years | 9.1 years |
| Modest evening use | 5 kWh | About A$550 | 14.4 years | 21.9 years |
The second household would not recover the cost inside the 10-year warranty. At 12 kWh a day, two BAT 10.0 modules deliver about 44 MWh in 10 years, under the minimum warranted throughput of 26.68 MWh per module reported by SolarQuotes in December 2025.
What to check on your quote
- The module model (BAT 5.0, 8.0 or 10.0), module count and usable kWh.
- The controller size in kW, and single or three phase.
- Whether the Sigen Energy Gateway is included and which circuits are backed up.
- The STC count and value as a separate line, and the installation date.
- Switchboard work, cable runs and other site costs.
- For an 8, 10 or 12 kW single-phase controller, that it is the redesigned unit supplied since the November 2025 recall.
- Who handles warranty claims.
See how to compare solar quotes and the Solar Cobber directory. Solar Cobber does not verify accreditation, so check the Clean Energy Council approved retailer list and the Solar Accreditation Australia installer register yourself.
FAQ
How much does a Sigenergy battery cost in Australia?
A Sigenergy SigenStor costs about A$6,300 installed for a 9 kWh single-module system and about A$7,900 to A$12,000 for 18 kWh, after the federal battery discount, at prices published in November 2026. A 54 kWh stack is about A$20,600 to A$22,000.
How much is a Sigenergy 8 kWh battery module?
A Sigenergy BAT 8.0 module retails for about A$3,345 to A$3,399 before any discount or installation, as at 12 November 2026 (Buzz.energy and other retailers). Every stack also needs a Sigen Energy Controller.
How much does the Sigenergy Gateway cost?
The single-phase Sigen Energy Gateway is about A$900 and the three-phase home Gateway about A$1,100 to A$1,200, at prices published by Grow Energy and LiFePO4 Australia in November 2026.
How much is the Sigenergy EV DC charger?
The Sigenergy EV DC charging module is about A$3,700 to A$4,200 for 12.5 kW and A$4,700 to A$4,900 for 25 kW before installation, as at 12 November 2026. It does not increase the federal battery discount.
Is Sigenergy cheaper than Sungrow?
Yes, on SolarQuotes’ published prices as at 12 November 2026: about A$4,900 for an 18 kWh SigenStor with the inverter built in, against about A$9,300 for a 16 kWh Sungrow SBR that needs a separate hybrid inverter (both after the discount, before installation).
Does the federal battery rebate apply to Sigenergy batteries?
Yes, if the SigenStor configuration is on the Clean Energy Council approved batteries list. An 18 kWh system installed by 31 December 2026 earns 111 certificates, worth about A$4,200 to A$4,400, and the factor drops from 6.8 to 5.7 on 1 January 2027.
Sources
- SolarQuotes: Sigenergy review and prices
- SolarQuotes: Solar battery cost
- SolarQuotes: New SigenStor battery options
- Grow Energy: Sigenergy installed prices and EV DC module
- LiFePO4 Australia: Sigenergy prices
- Buzz.energy: Sigenergy module prices
- Greenlight Solar: Sigenergy NSW prices
- Sigenergy: BAT 6.0 and 10.0 datasheet
- DCCEEW: Cheaper Home Batteries Program
- Demand Manager: STC spot price, 12 November 2026
- ProductReview.com.au: Sigenergy SigenStor
About this guide
Written by the Solar Cobber editorial team as independent desk research, checked in November 2026. Solar Cobber is a free directory that may earn referral or advertising fees from installers; commercial relationships never affect content. This is not financial advice. Send corrections via our contact page.
Filed under Solar Products
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