Solar Energy Storage
Solar Battery Installation
Store your daytime solar. Power your home at night.
Daytime solar sells for a few cents; evening power costs full price. A battery sized to your evening load flips that math. We match the right battery and inverter to your home, handle backup configuration if you need it, and manage rebate paperwork so you capture available incentives like the federal Cheaper Home Batteries program. Most installs run $7,000–$15,000 before rebates.
⏳ Deadlines
- Cheaper Home Batteries steps down in 66 days (1 January 2027)About $252/kWh for the first 14 kWh, $151/kWh to 28 kWh and $38/kWh to 50 kWh (2026 rate) Source: DCCEEW Cheaper Home Batteries, from 1 May 2026 · checked 2026-10-16
- STC discount on new solar shrinks in 66 days (1 January 2027)about 20% less than this year (one fewer deeming year) Source: Clean Energy Regulator (small-scale technology certificates) · set by law
Why most homes export cheap solar during the day and buy back power at full price at night.
Your solar system generates most power between 9am and 3pm. If you're at work or running low-energy appliances, that surplus flows back to the distribution network for a few cents per kilowatt-hour. Then, when the sun sets and you cook dinner, run the dishwasher and watch TV, you buy that power back at the full retail rate—often 3–5 times higher. A battery intercepts your midday export, stores it, and feeds your home during peak evening hours instead. The maths flip: you keep the power you generated instead of selling it cheap and buying it back dear.
Without a battery, you're buying two-thirds of your electricity at full price. With one sized to your evening load, you use it for eight to ten hours and offset peak-rate consumption. The payback timeline depends on your export rate, evening consumption and available rebates—typically three to seven years—after which the battery is almost free energy.
What this covers
- 01
10kWh Battery Installation
Entry-level system for homes with 10–15kWh evening load. Covers most of your after-sunset consumption. $7,000–$9,500 before rebates.
- 02
13.5kWh Battery Installation
Popular mid-size system for average Australian homes. Stores most or all of your solar export and powers you through the evening. $8,500–$11,500 before rebates.
- 03
Stacked Battery Systems (15–20kWh+)
Two or more batteries for homes with large evening loads or high solar generation. Maximises self-consumption and reduces grid dependence. $12,000–$18,000+ before rebates.
- 04
Backup Battery with Gateway
Battery system with backup gateway and isolated circuits for blackout protection. Powers essential or whole-home circuits when the grid fails. Adds $1,500–$3,000 to standard system cost.
- 05
Battery-Only Retrofit
Adding a battery to an existing solar system without replacing your inverter. Fast, lower cost than DC-coupled systems. Ideal for homes with working solar and good afternoon export.
How we size your battery and design your system.
Sizing a battery starts with understanding your electricity pattern. We ask for your last 12 months of bills or download your monitoring data if your solar has a logger. We look for two numbers: your average evening load (the kilowatts you use between 4pm and 9pm) and your average daily export (the kilowatt-hours flowing back to the grid on clear days). If you export 15kWh and use 12kWh between 4pm–9pm, a 12–13.5kWh battery covers most of your evening. If you export 20kWh and use 18kWh in the evening, a 15–20kWh system or stacked batteries make sense.
Next, we check inverter and battery compatibility. Your existing solar inverter might already support battery input (many modern models do); if not, we add a separate battery inverter or replace the whole unit. AC-coupled systems (battery on the AC side) work with any solar inverter. DC-coupled systems (battery directly on the DC bus) are more efficient but need an inverter that supports them. We confirm that your chosen battery brand (LG Chem, Tesla Powerwall, Solarwatt, Generac PWRcell etc.) pairs safely with your inverter, then design the mounting location—indoor garage, outdoor weatherproof enclosure, or wall-mounted—based on your home's layout and climate. A signed design drawing goes to your distribution network operator and the Clean Energy Regulator (CER) if you're claiming rebates or STCs.
Installation, commissioning and getting your rebates.
On installation day, our SAA accredited electrician turns off your solar system and main switchboard, runs new cabling from the battery to the inverter and switchboard (following Australian Standard AS/NZS 3000 and local network rules), mounts the battery securely, and makes all connections watertight. If you've chosen backup, we install a special gateway (such as Enphase IQ or SMA Home Manager) that disconnects your home from the grid in a blackout and isolates the battery to essential circuits. Every connection is tested for voltage, current, earthing and arc-fault protection before the system powers on. We then commission the battery: set the charge and discharge rates in the app, enable any self-consumption or time-of-use modes you need, and walk you through how to read the display or app.
Rebate paperwork happens during or right after install. If you're using the federal Cheaper Home Batteries program, we lodge your system details with the CER and your installer network (such as a NETCC Approved Seller partner). You'll need proof of installation and an invoice showing usable capacity; the rebate is processed as a discount at point of sale or a cashback within weeks. State rebates vary—NSW, Victoria, South Australia and Queensland each have different schemes—so we check current amounts with your state energy agency and fill in the forms on your behalf. If you have solar panels and are claiming Small-scale Technology Certificates (STCs), the CER calculates your upfront discount based on your system size, climate zone and deeming years ($38 per STC, multiplied by zone factor and 5-year deeming period). This discount also applies at point of sale. You'll walk away with a fully working battery system, full documentation, and rebates already factored into your final cost.
Pricing guide
How much does a solar battery installation cost in Australia?
A typical 10–13.5kWh battery system costs $7,000–$15,000 before rebates. Price is driven by usable capacity (kWh), whether you add backup, your inverter choice, battery brand and warranty, and indoor versus outdoor mounting. Federal rebates from the Cheaper Home Batteries program can knock $1,500–$3,500 off depending on capacity; state rebates add another $500–$2,000 in eligible areas. Ask us to confirm current rebate amounts with the Clean Energy Regulator and your state energy agency—they change on set dates.
- Usable capacity: 5kWh costs less than 20kWh; most homes choose 10–15kWh.
- AC-coupled vs DC-coupled: AC is simpler retrofit; DC is more efficient and costs slightly less.
- Backup configuration: Adding a gateway and isolated circuits adds $1,500–$3,000.
- Brand and warranty: LG Chem, Tesla, Solarwatt and Generac differ in price, efficiency and 10–15 year warranty terms.
- Inverter: New hybrid inverter runs $2,500–$4,500; retrofitting into existing inverter saves cost.
- Mounting location: Indoor garage is simplest; outdoor enclosure costs more; wall-mount in exposed areas may need extra protection.
| Job type | Low | Typical | High |
|---|---|---|---|
| 10kWh battery retrofit (AC-coupled) | $7,000 | $8,500 | $9,500 |
| 13.5kWh battery with new hybrid inverter | $8,500 | $11,000 | $13,000 |
| 15–20kWh stacked battery system | $12,000 | $15,500 | $18,000 |
| Battery with backup gateway and circuits | $9,500 | $13,000 | $16,000 |
Final cost depends on site inspection, distribution network fees, and available rebates. Ask for a written quote after we've reviewed your usage and system design.
Typically included
- Usage review from 12 months of electricity bills or solar monitoring data
- Battery and inverter compatibility assessment
- Battery, mounting frame and all cabling
- Electrical work by SAA accredited electrician (AS/NZS 3000 compliant)
- Commissioning, app setup and performance testing
- Rebate and STC paperwork lodgement with CER or state agency
Often excluded
- Solar panel installation (battery-only service; we do solar separately)
- Upgrade to main switchboard (if required by your network, extra cost applies)
- Removal or disposal of old battery or inverter
- Structural modifications to roof or wall (ask if your mounting location needs reinforcement)
Installation must be carried out by an SAA accredited electrician. All work is notified to your distribution network operator and must comply with Australian Standard AS/NZS 3000 and your network's connection rules. Proceeding with an unlicensed installer or attempting DIY will void warranties, breach electrical safety law, and disqualify you from rebates. We verify accreditation and network requirements before we start.
Questions to ask every installer
- 1Is the installer SAA accredited and can they lodge CER paperwork?
- 2Which battery brands do you stock and what are their warranty terms?
- 3Do you support backup configuration and what does it cost?
- 4How do you calculate the right battery size for my home?
- 5Will you handle all rebate applications—federal, state and STCs?
Local solar data
How much power does solar make in Victoria?
Each kW of panels in Victoria makes about 1,366 kWh a year (Melbourne data). That means a 6.6kW system makes around 9,016 kWh a year, or about 25 kWh on an average day. Melbourne averages 4.8 peak sun hours a day.
Figures use PVWatts modelling for a north-facing (south-facing in the northern hemisphere) roof at 20°. Your actual output depends on shade, roof direction and the panels you choose.
| City | Network | kWh per kW a year | Sun hours a day | Grid price per kWh | Yearly saving, 6.6kW |
|---|---|---|---|---|---|
| Melbourne VIC | — | 1,366 | 4.76 | — | — |
Incentives that apply in Victoria
National · battery
Cheaper Home Batteries
About $252/kWh for the first 14 kWh, $151/kWh to 28 kWh and $38/kWh to 50 kWh (2026 rate)
Battery 5–100 kWh, able to join a VPP, connected to rooftop solar
Source: DCCEEW Cheaper Home Batteries, from 1 May 2026 · checked 2026-10-16
National · solar
Small-scale Technology Certificates (STCs)
Upfront discount: kW × zone multiplier × deeming years × STC price
Systems up to 100kW installed by an SAA-accredited installer
Source: SRES: zone multiplier × 5-year deeming × $38 per STC · checked 2026-10-16
VIC · hot water
Solar Victoria hot water rebate
up to $1,400 locally made, $1,000 other
Same $150,000 income cap
Source: Solar Victoria, from 1 July 2026 · checked 2026-10-16
VIC · solar
Solar Victoria panel rebate
up to $1,400
Combined household income $150,000 or less
Source: Solar Victoria, from 1 July 2026 · checked 2026-10-16
Sources: PVWatts v8 (north-facing 20°, 14% losses, nearest station) · SRES: zone multiplier × 5-year deeming × $38 per STC · DCCEEW Cheaper Home Batteries, from 1 May 2026 · Solar Victoria, from 1 July 2026
Brands we install
Brands we install
Ask us about current stock and warranty terms for each brand.
- Panels
- JinkoTrinaLONGiAikoRECCanadian SolarSunPower (Maxeon)
- Inverters
- FroniusSungrowSolarEdgeEnphaseGoodWeHuawei
- Batteries
- Tesla PowerwallSigenergyBYDAlpha ESSEnphase IQ BatterySungrow SBRFranklinWH
Solar designed around your situation
Which situation best suits you?
How much does a solar battery cost in Australia?
What size battery do I need?
Can a battery power my home during a blackout?
Do I get rebates or STCs for a battery?
How long does a solar battery installation take?
What warranty does a solar battery have?
Do I need an electrician to install a solar battery?
Which battery should I choose: AC-coupled or DC-coupled?
Ready to store your solar?
Get a free usage review and battery sizing quote.