Is a home battery worth it in the Australian Capital Territory?
It depends on the gap between what you pay for power and what you are paid for exporting it. In Australian Capital Territory that gap is 37c against 2c, about 19 times, and a battery is essentially a way of not giving that difference away.
What is different about the Australian Capital Territory
At 37c a unit the Australian Capital Territory sits 2nd of 8 on retail price, with a feed-in tariff of 2c. It averages 4.7 peak sun hours a day.
What storage costs here, after rebates
| Household uses | Their bill a quarter | System | After rebates | Saves a year | Pays for itself |
|---|---|---|---|---|---|
| 10 kWh | $437 | 6.6kW solar + 10kWh battery | $7,830 to $15,730 | $1,020–$1,260 | 7–10+ years |
| 15 kWh | $605 | 10–13kW solar + 10kWh battery | $9,130 to $19,730 | $1,540–$1,900 | 5–10+ years |
| 22 kWh | $841 | 10–13kW solar + ~15kWh battery | $11,370 to $22,370 | $2,190–$2,750 | 5–9 years |
| 30 kWh | $1,110 | 10–13kW solar + ~15kWh battery | $11,370 to $22,370 | $2,520–$3,440 | 4–7 years |
Solar with a battery, four households, after every rebate that applies in the Australian Capital Territory.
Against panels on their own
The same middle household on panels alone pays $8,000 to $13,000 after rebates and saves $770–$1,160 a year, against $9,130 to $19,730 and $1,540–$1,900 with storage added. Payback moves from 8–10+ years to 5–10+ years.
A battery almost always pays back more slowly than panels do. What it buys on top is a larger share of the bill gone, and blackout cover, which is worth something real but is not a saving and should never be sold to you as one.
Where the value actually comes from
Every unit you store is a unit you do not sell at 2c and do not buy back at 37c. That round trip is the entire economic case. It is why storage stacks up better in a low feed-in state than a high one, which is the opposite of most people's intuition.
Sizing. A bigger battery is not automatically better. It only earns if you have enough surplus generation to fill it most days and enough evening load to empty it. An oversized pack spends most of the year half full, which is money sitting on a wall.
$5,000 difference.
That is the gap between two quotes for the same 6.6kW system in the Australian Capital Territory, in the same week. Not build quality, not a better job. Overheads, how full the diary is that month, and what the person at your kitchen table thinks you will agree to. On solar with a battery the same gap is $10,600.
Closing that gap is what I do. I already know what installers in your area are quoting this month for this equipment, so I get you the bottom of that range for the same system other companies charge thousands more for. It costs you nothing. The installer pays me, and only if you go ahead, which is why there is no reason for me to push you at a bigger system than you need or at a dearer installer.
Get your own numbers, then get them priced properly
The table above is four example households. Two minutes of questions gets you your system size, what it should cost after rebates in the Australian Capital Territory, and a ten-year projection built on your roof and your usage. Then I find the bottom of that price range for you.
Run my numbers, freeNo installer buys placement or ranking here, and nothing reaches an installer unless you ask.
Common questions
Is a home battery worth it in the Australian Capital Territory?
For a household using 15 kWh a day, solar with a battery costs $9,130 to $19,730 after rebates, saves $1,540–$1,900 a year and pays back in 5–10+ years. Panels alone pay back faster but remove less of the bill.
How much does a home battery cost in the Australian Capital Territory after rebates?
Solar with storage runs $9,130 to $19,730 for a mid-sized household once the federal battery rebate and any state incentive come off.
Does a battery pay for itself?
More slowly than panels. In Australian Capital Territory storage pays back in 5–10+ years against 8–10+ years for panels alone.
Why does a battery make more sense where the feed-in tariff is low?
Because storing a unit avoids selling it at 2c and buying it back at 37c. The wider that gap, the more each stored unit is worth.