The Fox ESS battery price in Australia, as at November 2026, depends more on who installs it than on the hardware. For the popular 27.96 kWh Fox ESS EQ4800 stack with a Fox ESS hybrid inverter, published installed prices run from A$1,920 to A$5,600 in installer advertisements, and about A$11,100 on a full-service basis (a Solar Cobber estimate: SolarQuotes’ hardware price plus its A$3,000 installation assumption), all after the federal discount. Before the discount that is roughly A$8,000 to A$17,000 (our estimate: published price plus the discount).
This guide is independent desk research. Solar Cobber did not obtain quotes, did not contact Fox ESS or any installer named here, and was not paid by any of them. Published prices carry their source and month; our own calculations are labelled as estimates.
Key facts
- The Fox ESS EQ4800 uses 4.66 kWh modules sold in stacks of 2 to 9 modules (9.32 kWh to 41.93 kWh usable), according to the Fox ESS Australian datasheet.
- As at 12 November 2026, SolarQuotes lists approximate Fox ESS EQ4800 hardware prices of A$4,000 for 13.98 kWh and A$13,000 for 41.94 kWh, including the federal rebate and GST but excluding installation.
- Sydney installer Solar National publishes Fox ESS EQ prices, current as at July 2026, of A$1,920 to A$4,960 installed after the federal rebate, with a hybrid inverter included.
- The federal Cheaper Home Batteries Program discount on a 27.96 kWh Fox ESS EQ4800 is about A$5,780 to A$6,080 for installs between 1 May and 31 December 2026, and falls by about A$950 to A$1,000 on 1 January 2027.
- Fox ESS does not publish a recommended retail price for its home batteries in Australia, so every Fox ESS price is an installer or retailer price.
Fox ESS battery price list (November 2026)
A Fox ESS EQ4800 battery costs between about A$2,000 and A$19,000 installed after the federal discount, depending on stack size and installer. The table shows the range for each Fox ESS EQ4800 stack, checked in November 2026. Prices include GST and a Fox ESS hybrid inverter unless noted. Method for every estimate in this guide: where a figure is not a published price (the before-discount column, and “about” figures marked as SolarQuotes plus installation), it is Solar Cobber arithmetic, not a quoted market price.
| Fox ESS EQ4800 stack | Usable capacity | Installed price before federal discount (Solar Cobber estimate where not published) | Federal discount (May to Dec 2026) | Installed price after federal discount | Sources for the range |
|---|---|---|---|---|---|
| L3 (3 modules) | 13.98 kWh | A$6,500 to about A$10,700 | A$3,610 to A$3,800 | A$2,660 to about A$7,000 | Solar National; SolarQuotes plus installation |
| L6 (6 modules) | 27.96 kWh | A$8,000 to about A$17,000 | A$5,780 to A$6,080 | A$1,920 to about A$11,100 | Solar National; SolarQuotes plus installation |
| L8 (8 modules) | 37.27 kWh | A$10,400 to about A$21,700 | A$6,120 to A$6,440 | A$3,920 to about A$15,400 | Solar National; SolarQuotes plus installation |
| L9 (9 modules) | 41.93 kWh | A$11,600 to about A$25,300 | A$6,310 to A$6,640 | A$4,960 to A$18,800 | Solar National; Sapphire Solar |
Where the ranges come from:
- Low end: Solar National, a Sydney installer, publishes prices “current as at July 2026” that include installation and a Fox ESS hybrid inverter.
- High end: Sapphire Solar, a Melbourne installer, lists four sizes after “applicable rebates” with a 5 kW inverter, blackout protection and bollards included.
- SolarQuotes plus installation: the SolarQuotes battery comparison table gives prices after the rebate and excluding installation. SolarQuotes says a simple installation adds at least A$3,000, so we added A$3,000.
- Solar Choice: its Fox ESS review (updated September 2026) puts an 18.64 kWh EQ4800 at about A$11,000 installed.
In between, Solar Battery & Solar Panel Group advertised a 27.96 kWh Fox ESS EQ4800 with a 10 kW inverter at A$5,600 installed after the discount on OzBargain on 11 October 2026. The federal discount column is our calculation at A$38 to A$40 per certificate (see below).
Fox ESS EQ4800 price by size, hardware only
As at 12 November 2026, SolarQuotes lists these approximate prices, including the federal rebate and GST and excluding installation. They are the closest like-for-like list because they strip out installer differences.
| Fox ESS EQ4800 size | Approx. price after rebate, excluding installation | Price per usable kWh |
|---|---|---|
| 13.98 kWh | A$4,000 | A$286 |
| 23.30 kWh | A$6,500 | A$279 |
| 27.96 kWh | A$8,100 | A$290 |
| 37.28 kWh | A$12,400 | A$333 |
| 41.94 kWh | A$13,000 | A$310 |
The price per kWh rises above 28 kWh because the federal discount almost stops at that point.
Fox ESS 42kWh battery price
A 41.93 kWh Fox ESS EQ4800 (often advertised as “42 kWh”) costs A$4,960 to A$18,800 installed after the federal discount in the published prices above; SolarQuotes lists the hardware at A$13,000 before installation. See our guide to 30, 40 and 50 kWh battery prices.
Fox ESS CQ7 and Power Cube prices
SolarQuotes lists the Fox ESS CQ7 from A$3,900 for 13.92 kWh to A$14,000 for 48.72 kWh, and the Fox ESS Power Cube from A$4,800 for 16.38 kWh to A$13,800 for 49.14 kWh, after the rebate and excluding installation (November 2026).
Installed OzBargain advertisements include a 42 kWh Fox ESS CQ7 with a 10 kW inverter at A$7,749 (Victorian Power Savers, 17 October 2026) and a 27.3 kWh Power Cube with a 10 kW inverter at A$6,499 (Enerforge, 25 October 2026), after the federal discount and excluding backup wiring.
What changes the price
Installer inclusions explain most of the gap between a A$2,000 and an A$11,000 quote for the same stack.
- Backup. Blackout backup is not automatic: Victorian Power Savers lists A$1,000 for essential-circuit backup (October 2026); Sapphire Solar includes it.
- Hybrid inverter. The EQ4800 only works with a Fox ESS hybrid inverter.
- Three phase and site work. Enerforge’s three-phase package is A$400 more than single phase; published switchboard add-ons run A$600 to A$1,000, and advertised packages include 8 to 10 metres of cable, then about A$40 a metre.
- Installer margin and support. Trade wholesaler Australian Solar Supplies lists one 4.66 kWh EQ4800 expansion module at A$1,373.75 excluding GST (November 2026); five come to about A$7,560 including GST (our arithmetic) before the master module, inverter and labour. An installed price near A$8,000 before the discount leaves little for labour and support, so get the inclusions in writing.
See what a solar battery costs in Australia for all brands.
How the federal battery discount applies
The federal Cheaper Home Batteries Program cuts a Fox ESS battery price by about A$258 to A$272 per usable kWh on the first 14 kWh for installs from 1 May to 31 December 2026, delivered as small-scale technology certificates (STCs) that the installer takes off the invoice. Demand Manager’s spot market showed A$39.60 per STC on 12 November 2026 and the Clean Energy Regulator’s Clearing House price is A$40; the A$38 lower end used here is our assumption for what installers pass on.
The Department of Climate Change, Energy, the Environment and Water sets the factor at 6.8 certificates per usable kWh for that period. The factor applies at 100% up to 14 kWh, 60% from 14 to 28 kWh and 15% from 28 to 50 kWh.
Worked example for a 27.96 kWh Fox ESS EQ4800 (L6):
First 14 kWh at 100% plus 13.96 kWh at 60% (8.38 kWh) gives 22.38 kWh; 22.38 x 6.8 = 152 certificates (rounded down), worth A$5,776 to A$6,080 at A$38 to A$40 each.
The same sum for a 41.93 kWh Fox ESS EQ4800 gives 166 certificates, or A$6,308 to A$6,640.
On 1 January 2027 the factor drops to 5.7. The 27.96 kWh stack then earns 127 certificates (A$4,826 to A$5,080), and a 13.98 kWh stack falls from 95 to 79 certificates, about A$610 to A$640 less. State schemes can stack on top; see battery rebates by state.
Fox ESS vs rivals on price
Fox ESS is among the cheapest mainstream batteries per kWh, but as at November 2026 it is no longer clearly the cheapest. The table uses SolarQuotes approximate prices (after rebate, including GST, excluding installation), checked 12 November 2026.
| Battery | Usable capacity | Approx. price after rebate, excluding installation | Price per usable kWh |
|---|---|---|---|
| Fox ESS EQ4800 | 27.96 kWh | A$8,100 | A$290 |
| Fox ESS CQ7 | 27.84 kWh | A$6,600 | A$237 |
| Sigenergy SigenStor | 27 kWh | A$7,200 | A$267 |
| Sungrow SBR | 25.6 kWh | A$14,000 | A$547 |
| Tesla Powerwall 3 (with Gateway) | 13.5 kWh | A$10,000 | A$741 |
On these figures the Sigenergy SigenStor undercuts the EQ4800 at about 27 kWh, while the Sungrow SBR and Tesla Powerwall 3 cost more per kWh. Our Fox ESS battery review covers warranty conditions and support.
Is it worth it? A worked payback example
A Fox ESS battery pays back in roughly 2 to 7 years when the stack matches the household’s evening use, and can fail to pay back within its 10-year warranty when oversized (our own calculation, not a measured result).
Assumptions: a Sydney home paying 33.1 c/kWh (Ausgrid, 2026-27 Default Market Offer, from our average electricity bill guide), a 3 c/kWh feed-in tariff and spare daytime solar, so each kWh used in the evening is worth 30.1 cents. Losses and degradation are ignored.
Case 1: 13.98 kWh stack, 10 kWh shifted a day. Savings are 10 x A$0.301 x 365, about A$1,100 a year: about 2.4 years at Solar National’s advertised A$2,660, or about 6.4 years at about A$7,000 (SolarQuotes hardware plus A$3,000 installation).
Case 2: 41.93 kWh stack, 12 kWh shifted a day. A home using only 12 kWh in the evening saves about A$1,320 a year whatever the stack size, so Sapphire Solar’s A$18,800 takes about 14 years, longer than the 10-year Fox ESS warranty.
Size the stack to evening consumption.
What to check on your quote
A Fox ESS quote should name the exact stack and inverter and show the federal discount as its own line.
- The EQ4800 configuration (L2 to L9) or CQ7 or Power Cube size, in usable kWh, and the Fox ESS inverter model and kW rating.
- The price before the discount, the number of STCs and the price after.
- Whether blackout backup is included and which circuits it covers.
- Switchboard work, cable allowance, bollards and any travel fee, and the installation date (the discount drops on 1 January 2027).
- Who lodges warranty claims (Fox ESS requires an installer); browse our installer directory and read our solar company failures tracker before choosing on price alone.
- The installer’s listing on the Clean Energy Council approved retailer list and the Solar Accreditation Australia installer register; check both yourself.
See how to compare solar quotes.
FAQ
How much does a Fox ESS battery cost in Australia?
A Fox ESS EQ4800 battery costs about A$2,000 to A$19,000 installed after the federal discount, as at November 2026, depending on stack size and installer. For a 27.96 kWh stack with a hybrid inverter, published prices run from A$1,920 (Solar National, July 2026) to about A$11,100 (our estimate from SolarQuotes hardware plus installation).
What is the Fox ESS 42kWh battery price?
A 41.93 kWh Fox ESS EQ4800 is listed at A$13,000 after the federal rebate and before installation by SolarQuotes, as at November 2026. Installed prices we found range from A$4,960 (Solar National, July 2026) to A$18,800 with backup (Sapphire Solar, November 2026).
How much is the federal rebate on a Fox ESS battery?
The federal discount is about A$3,610 to A$3,800 on a 13.98 kWh Fox ESS EQ4800 and about A$6,310 to A$6,640 on a 41.93 kWh stack, for installs from 1 May to 31 December 2026. The factor falls from 6.8 to 5.7 certificates per kWh on 1 January 2027.
Why are some Fox ESS battery prices so cheap?
The lowest Fox ESS prices are headline offers that exclude backup wiring, switchboard work and longer cable runs, and some are close to the trade price of the modules alone. Ask for an itemised written quote before paying a deposit.
Is Fox ESS cheaper than Sungrow or Sigenergy?
Fox ESS is much cheaper than Sungrow per kWh and close to Sigenergy: SolarQuotes lists a 27.96 kWh EQ4800 at A$8,100, a 27 kWh SigenStor at A$7,200 and a 25.6 kWh Sungrow SBR at A$14,000, all after the rebate and before installation (November 2026).
Is a Fox ESS battery any good?
Owners rate Fox ESS well: SolarQuotes showed 341 reviews as at November 2026, 293 of them five-star and 10 one-star. Known trade-offs are a short local support record and a warranty that must be claimed through an installer.
Sources
- DCCEEW: Cheaper Home Batteries Program (checked November 2026)
- Demand Manager: STC spot price, 12 November 2026
- SolarQuotes: battery comparison table (updated 12 November 2026)
- SolarQuotes: Fox ESS battery reviews (checked November 2026)
- Solar Choice: Fox ESS battery review (updated September 2026)
- Solar National: Fox ESS battery review and Sydney prices (July 2026)
- Sapphire Solar: Fox ESS EQ4800 battery (checked November 2026)
- Australian Solar Supplies: FoxESS EQ4800 4.66 kWh module (checked November 2026)
- OzBargain: Fox ESS EQ4800 27.96 kWh and 10 kW inverter, Solar Battery & Solar Panel Group (11 October 2026)
- OzBargain: Fox ESS CQ7 28 kWh and 42 kWh, Victorian Power Savers (17 October 2026)
- OzBargain: Fox ESS Power Cube 27.3 kWh, Enerforge (25 October 2026)
- Fox ESS EQ4800 datasheet, Australia
About this guide
This guide was written by the Solar Cobber editorial team from independent desk research, with prices and program rules checked in November 2026. Solar Cobber is a free directory that may earn referral or advertising fees from installers; commercial relationships never affect content. Nothing here is financial advice, and installer prices change often, so confirm any figure in a written quote. To report an error, use our contact page.
Filed under Solar Products
Back to blog
