Batteries
Home and commercial storage, battery-ready where it makes sense.
Residential
50kWh Battery
The federal battery rebate counts the first 50kWh of a battery and nothing beyond it, so 50kWh is the top of the scale for the household discount. It is also where most buyers are businesses, farms and large rural properties. Here is what it earns back and what to think about before you go bigger.
- 50kWh usable
- Top of the federal rebate scale*
01
Fifty Kilowatt-Hours: Where the Federal Rebate Ends
Under the Cheaper Home Batteries Program, small-scale technology certificates are calculated on the first 50kWh of usable capacity. Batteries up to 100kWh nominal capacity remain eligible, but the capacity above 50kWh earns no extra certificates*. So a 50kWh battery gets the maximum federal discount available, and a 70kWh battery gets the same dollar amount as a 50kWh one.
That makes 50kWh a natural stopping point for the federal rebate, and a natural starting point for commercial thinking.
02
What Shapes a 50kWh Battery Quote
Switchboard capacity, three-phase works, protection equipment, trenching on larger properties and the network's connection requirements can all change it.
03
The Rebate at 50kWh, in Detail
To put it in proportion, the rebate is roughly 15 percent of the battery's pre-rebate value. For a 15kWh battery it is about 24 percent. At this size, tariffs, demand charges and your own load pattern decide whether the project pays, far more than the rebate does.
Working: (14 x 6.8) + (14 x 4.08) + (22 x 1.02) = 174.76 STCs.
Confirm the current rules with the Department of Climate Change, Energy, the Environment and Water.
04
What About Batteries Bigger Than 50kWh?
Larger systems are designed as commercial projects. See Commercial Solar and Battery, and our NSW Commercial Battery Incentive page for eligible sites.
| Battery size | Federal rebate | Other routes |
|---|---|---|
| Up to 50kWh | Rises with size, with the tiered rates | NSW business incentive may apply from 20kWh |
| 50kWh to 100kWh | No extra beyond the 50kWh amount | NSW business incentive may apply (BESS4, to 200kWh) |
| 100kWh to 200kWh | Not eligible for the federal program | NSW BESS4 may apply for eligible business sites |
| Above 200kWh | Not eligible | NSW BESS5 may apply, on the first 10MWh |
05
Who Buys a 50kWh Battery
- Businesses with large evening or early-morning loads, such as food manufacturers, cold storage, cafés and clinics
- Farms and rural properties running pumps, dairies, cool rooms or grain handling
- Body corporates and multi-dwelling sites that share a connection
- A very small number of very large homes
If that is not you, smaller sizes are almost certainly better value. See our large battery size guide.
06
Installation Reality at This Scale
A 50kWh battery is heavy, usually split into several modules, and needs planning.
- Footprint and weight. Check floor loading, clearances and ventilation.
- Fire and safety. Placement and separation must meet AS/NZS 5139, and your insurer may have its own requirements.
- Electrical. Three-phase, a larger inverter or several inverters, and heavier switchboard capacity are common.
- Network. Connection approval, and in some areas limits on export or inverter capacity.
- Monitoring. At this size, a monitoring and alerting setup is not optional.
We cover each item in a site assessment before giving you a quote.
07
Making the Numbers Work
We do not promise a payback figure. We build one from your data, and write the assumptions on the page.
- Load profile. Twelve months of bills, plus half-hourly data if available.
- Tariff. The gap between the price you pay at peak and the price of power you store or generate, plus any demand charge.
- Solar. Whether new or existing panels will fill the battery.
- Incentives. Federal rebate, any NSW incentive, and any retailer or network program.
- Scope. Any upgrades, the installation work and ongoing maintenance.
You get the result with the assumptions written down. If the numbers do not stack up for your site, we will say so.
Equipment
Battery Brands We Install
We fit storage from manufacturers with local support teams, so the warranty on your battery still means something in ten years.
Brand availability depends on your system design and location. We confirm the selected equipment and manufacturer warranty in your written quote.
Important Information
* Rebate details, output figures and timeframes shown are indicative estimates based on stated assumptions, not an offer, quote or guarantee. Your outcome depends on your site, roof, switchboard, network, products and the date of installation, and your written quote prevails. Savings and payback are not guaranteed. See clauses 24.1 to 24.5 of the Terms and Conditions.
Questions
Common Questions
01What Affects the Quote for a 50kWh Battery?
Large sites vary with phase, switchboard and network needs.
02What Is the Federal Rebate on a 50kWh Battery?
It depends on your home, your site and the equipment you choose, so we confirm it in a written quote after a free assessment.
03Do I Get a Bigger Rebate for a Battery Above 50kWh?
No. Certificates are calculated on the first 50kWh of usable capacity only. Batteries up to 100kWh nominal remain eligible but earn no extra*.
04Can My NSW Business Get an Incentive for a 50kWh Battery?
Possibly. Eligible NSW business sites can access a state incentive on batteries from 20kWh to 200kWh from 1 September 2026, alongside the federal rebate.
05Is 50kWh Enough to Run a Business Through an Outage?
It depends on the load. Divide 50kWh by your average load in kW to estimate hours. At 10kW average, about 5 hours.
06Does 50kW Mean 50kWh?
No. kW is power, kWh is stored energy. A "50kW solar battery" search usually means capacity.