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South Australia - Updated September 2026

South Australia solar battery cost calculator & rebates

Every Australian state and territory can access the federal Cheaper Home Batteries Program in 2026 (about $252/kWh on the first 14 kWh of usable capacity, tapering above that). Figures verified as of July 2026.

South Australia's Home Battery Scheme is closed. SA households installing batteries in 2026 access the federal rebate only.

South Australia has high rooftop solar penetration - batteries help use more of your own generation overnight.

Adelaide metro installs follow the same federal rebate rules as regional SA. Gross quotes for 8-13.5 kWh systems commonly sit in the national band, with net cost after federal STCs often landing in the mid-$6,000s to low-$12,000s depending on size and site work.

Cost in South Australia: South Australian solar battery cost after rebate is typically federal-only. Adelaide homes often compare 8-13.5 kWh systems in the mid-$6,000s to low-$12,000s net range before quotes.

Official source: South Australia rebate information · National cost guide · Battery guides · Compare state rebates

Solar battery cost in Adelaide

Adelaide metro installs follow the same federal rebate rules as regional South Australia - the SA Home Battery Scheme is closed, so upfront discounts come from the Cheaper Home Batteries Program only. Gross quotes for a 10 kWh battery commonly sit between $9,000 and $14,000 installed before discounts.

After the federal STC discount (roughly $2,500 on 10 kWh in mid-2026), many Adelaide households land near $6,500-$11,500 net for a 10 kWh system. South Australia's high rooftop solar penetration means evening self-consumption often drives payback more than any Adelaide-specific install premium.

Adelaide homes with existing solar frequently retrofit via AC-coupled batteries. Check whether your retailer offers time-of-use tariffs that reward shifting solar into evening peak - accurate bill and solar size inputs in the calculator above matter more than picking a generic 10 kWh default.

  • Typical 8 kWh net after federal rebate: about $6,500-$9,500
  • Typical 10 kWh net after federal rebate: about $6,500-$11,500
  • Typical 13.5 kWh net after federal rebate: about $9,000-$14,000
  • SA Home Battery Scheme closed - federal only for upfront discount
  • High solar uptake - evening usage and retailer rates drive payback

See also: National price tables · 8 kWh battery cost guide · 10 kWh battery cost guide · 13.5 kWh battery cost guide · Best home batteries

See your South Australia net cost in the calculator

Prefilled for South Australia - instant estimate, no email required.

Open calculator
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Your details

A few quick questions - no email required to see your result.

Required - rebate stacking depends on your state.

How do you want to estimate usage?
Do you already have solar panels?

Battery shoppers usually already have panels. We default to Yes; switch if you are planning solar with the battery.

Your quarterly bill is treated as grid spend after existing solar when you choose Yes, and as total household usage when you choose No solar yet. Switching that answer can change inferred daily kWh and savings.

Larger solar usually means more excess power to charge the battery and shorter payback.

When do you plan to install?

The federal rebate steps down from 1 January 2027.

More options (mode, rates, extra inputs)
Calculator mode

We search generic sizes (5-100 kWh) and catalog stacks for the shortest estimated payback.

Default 0.30. For time-of-use, enter your average or peak rate.

Default 0.05 (5c). What your retailer pays for exported solar.

Your electricity plan type

Hit a target bill

Used for Hit a target bill. Energy portion only at your rate (not supply charges). Try $0 for minimum grid use, or e.g. $400/yr (~$100 per quarter).

Explore options

Used for Explore options. If you pick a system, we use its usable kWh per unit times the count above. Costs vary by installer and site.

How much do you want to back up?

Sets the suggested battery size in Explore when you have not picked a specific system above.

Compare outcomes

Best estimated payback: 8.2 years at GoodWe ESA (~16 kWh) (16 kWh).

Best payback configuration

GoodWe ESA (~16 kWh)

16kWh

Estimated annual electricity cost (energy at your rate)

Before battery

$1,604

/yr

After battery

$115

/yr

Bill drop: $1,489/yr ($1,604 - $115)

Payback uses $1,241/yr modelled savings, not the full bill drop. Storing solar means you forgo about $248/yr of feed-in tariff on that energy.

Gross installed cost$14,000
Federal rebate (install 2026)- $3,824
No state upfront rebate ($0)$0
Estimated net cost$10,176

Installing in 2027 instead would reduce your federal rebate by about $619.

Simple payback period

8.2 years

Optimal payback is based on this calculator's inputs and assumptions only (usage, solar size, tariffs, rebate rules, and indicative installed costs). Real-world payback varies with installer quotes, site conditions, and how you use power. This is an estimate, not a guarantee.

These are estimates. The next step is real installer pricing for your home.

Estimates updated July 2026 · See methodology

What to do next

You already have the full numbers above - keep a copy or dig deeper. No email required.

Email me this estimate (optional)

Optional - you already have your full result above. We do not require an email to see any numbers.

Open email app

Opens your default mail app (Mail, Outlook, Thunderbird, and so on) with the estimate filled in. We also copy the full summary so you can paste it if the app truncates.

Prefer the browser? Gmail / Outlook on the web.

Compare quotes fairly

Take this to installers so you compare like-for-like, not just the headline price.

  1. 1Usable kWh (not nameplate)Compare like-for-like usable capacity. Marketing peak or nameplate figures can differ from what you actually get to cycle each day.
  2. 2Gross price vs rebates, itemisedAsk for the installed price before rebates, then the federal STC discount and any state rebate shown as separate lines - not a single 'after rebate' number.
  3. 3Backup scopeConfirm whether backup covers the whole home or essential circuits only, and whether the backup gateway / switchboard work is included in the price.
  4. 4Commissioning date / STC yearThe federal discount steps down from 1 January 2027. Check which STC year the quote assumes, since a later commissioning date can reduce the rebate.
  5. 5State incentive eligibilityCheck any state scheme you may qualify for (for example the WA Residential Battery Scheme, or NSW VPP incentives and interest-free loans) and whether the quote accounts for it.

Read the guide

Full breakdown, long-term savings and assumptions

Cumulative energy savings (simple estimate)

Based on modelled battery savings used for payback ($1,241/yr). No inflation or battery degradation applied.

$12,410

10 years

$18,615

15 years

$24,820

20 years

How we calculated this

  • Estimated daily usage: 24.4 kWh (implied household load from a $400 quarterly bill after existing solar at $0.30/kWh).
  • Battery selected: GoodWe ESA (~16 kWh) (16 kWh usable). Indicative installed cost before rebates.
  • Installed cost uses an indicative midpoint for the selected system (before rebates).
  • Federal rebate uses STC factor 6.8 (install in 2026). From 1 Jan 2027 the factor drops to 5.7.
  • Flat-rate plan: import at $0.30/kWh, feed-in at $0.05/kWh.
  • Battery savings use the gap between import and feed-in (~$0.25/kWh) on solar stored instead of exported.
  • Savings assume about 85% of battery capacity can be cycled when excess solar is available.
  • Before battery: ~14.7 kWh/day grid imports (solar offsets ~9.8 kWh/day of daytime use).
  • After battery: ~1.1 kWh/day grid imports (13.6 kWh/day stored solar used overnight).
  • Annual bill before/after is the energy portion at your import rate (supply charges not included).
  • Bill drop (before minus after grid energy cost): ~$1489/yr.
  • Modelled battery savings used for payback: ~$1241/yr (shifted solar at import minus feed-in, never more than the bill drop).
  • SA Home Battery Scheme is closed; federal rebate applies.
  • Existing 6.6 kW solar: ~27.7 kWh/day generation, ~18 kWh/day excess after ~9.8 kWh daytime use.

Full write-up: methodology and assumptions.

Rebate data as of July 2026. Sources: [1], [2]. Confirm eligibility and pricing with an accredited installer.

South Australia battery rebate FAQs

Is the SA Home Battery Scheme still open?

No - it is closed to new applications. The federal program is the main upfront discount for SA installs in 2026.

Are batteries worth it in Adelaide?

Depends on your electricity rate, solar size and usage pattern. Use the calculator with SA selected and your actual bill or kWh usage for a personalised estimate.

What federal discount applies to a 10 kWh battery in SA?

The federal rebate tapers above 14 kWh. For 10 kWh installed in 2026, expect roughly $2,000-$2,600 off before installer pricing - the calculator shows exact figures.

How much does a solar battery cost in Adelaide?

Most Adelaide metro 10 kWh installs net around $6,500-$11,500 after the federal rebate in 2026. High solar penetration means payback often depends on your retailer rate and evening usage - use the calculator above with SA selected.

Where can I verify South Australia rebate rules?

Official source: https://www.energy.gov.au/rebates. Federal program: https://cleanenergyregulator.gov.au/node/3634.

Calculate for other states

Rebates and loan schemes differ by state and territory.

New South WalesVictoriaQueenslandSouth AustraliaWestern AustraliaTasmaniaAustralian Capital TerritoryNorthern Territory