Battery Storage

What is a Battery Energy Storage System?

A Battery Energy Storage System (BESS) stores electricity produced by your solar system, so you can use the energy when you need it most – either at night, on cloudy days or during power blackouts. With solar Feed-in Tariffs reducing and electricity prices increasing, battery storage can help. Rather than feeding your excess solar energy into the grid at a low rate (and then buying back electricity at night at a higher rate), batteries allow you to store the energy

that you produce and use it when you need. Whether a Battery Energy Storage System is right for your home or business depends on your individual circumstances and the extent to which you want to be independent of the grid.

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Is it time to buy?



If you want to protect your home or business against blackouts, invest in a BESS with back-up capability. How much back-up can be supplied will depend on your battery and its capacity.

Your existing Feed-in Tariff (FiT)

If your existing FiT is equal or greater to 44c/kWh, we would not recommend installing a battery system because you may lose your FiT and it is unlikely to improve your return on investment

Your energy usage

If your household’s energy consumption is highest during the early morning and evening and you get charged peak hour rates, then a battery system is definitely worth considering.


Our Products


Tesla Powerwall 2

Battery type: Lithium Ion (NMC)
Nominal Storage: 14kWh
Usable Capacity: 13.5kWh
Depth of discharge: 96%
Efficiency: 90% round-trip
Continuous Power: 5kW
Scalable: Yes
Unit Dimensions (W x D x H): 755mm x 155mm x 1150mm
Weight: 125kg
Operating temperature: -20°C – 50°C
Back-up capability: Yes
Product warranty: 10years
Compatible Inverter/s: Most
Price include installation*: $11,000

Alpha ESS Storion Eco S5

Battery type: Lithium-ion (Lithium Iron Phosphate)
Nominal Storage: 14.4kWh
Usable Capacity: 12.96Wh
Depth of discharge: 90%
Efficiency: 95% round-trip
Continuous Power: 5kW
Scalable: Yes

Unit Dimensions (W x D x H): 600mm x 600mm x 1160mm
Weight: 180kg
Operating temperature: -10°C-40°C
Back-up capability: Yes
Product warranty: 5 years
Compatible Inverter/s: N/A**
Price include installation*: $17,088

Redflow Zcell

Battery type: Flow (Zinc-Bromide)
Nominal Storage: 10kWh
Usable Capacity: 10Wh
Depth of discharge: 100%
Efficiency: 80% round-trip
Continuous Power: 3kW
Scalable: Yes
Unit Dimensions (W x D x H): 1020mm x 520mm x 1150mm
Weight: 290kg
Operating temperature: 15°C-50°C
Back-up capability: Yes
Product warranty: 10 years
Compatible Inverter/s: Selected
Price include installation*: $20,262

* Please note that the prices indicated above are provided as an estimate. The actual cost will depend on several variables that your solar consultant can explain in more detail.
** Suntrix has made every reasonable attempt to ensure the information contained on this page are accurate. However, Suntrix does not guarantee information is complete, up to date or correct at time of publication. Information is subject to change without notice.

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