SOFAR SOLAR BATTERY
If you are looking for a high-quality solar battery at a genuinely competitive price point, the Sofar Solar battery range deserves serious consideration. At Greenlight Solar, we supply and install the Sofar BTS series and Sofar PowerAll system for homeowners who want reliable residential solar energy storage without paying a premium brand price.
Founded in 2013 and operating in Australia since 2016, Sofar Solar is a global inverter and battery manufacturer headquartered in Shenzhen, China, with a dedicated Australian office in Sydney providing local technical support and warranty services. The Sofar BTS battery range received official CEC approval for sale in Australia in 2023 and has since been installed in thousands of Australian homes. Built on safe LFP (Lithium Iron Phosphate) cell chemistry, fully IP65 rated for outdoor installation, and available in a modular design that scales from 5 kWh to 40 kWh, the Sofar battery gives Australian homeowners a practical and flexible path toward genuine energy independence. Our CEC-accredited team handles everything from the initial assessment and government rebate applications through to commissioning and ongoing support.
Which Sofar Battery Capacity Is Right for Your Home?
Sofar BTS 5 kWh
Best for: Units, small apartments and budget-conscious homeowners wanting to ease into battery storage.
A single BTS module delivering approximately 4.75 kWh of usable storage suits 1 to 2 person households with a modest daily energy draw. It covers essential evening loads including lighting, refrigerator, television and phone charging. Because of the BTS series’ modular design, you can add a second module at any time without replacing any existing equipment, making this one of the lowest-risk entry points into residential battery storage in Australia.
Approximate installed price: $5,500 to $7,500 incl. GST
Sofar BTS 10 kWh
Best for: Average Australian families of 2 to 4 people with daily energy use of 15 to 20 kWh.
Two BTS modules give you approximately 9.5 kWh of usable storage, sufficient to cover the evening and overnight energy needs of a typical Sydney or Brisbane household and recharge fully from the following day’s solar generation. At this capacity, the Sofar BTS qualifies for most state government battery rebate programs and typically delivers annual electricity savings of $1,200 to $2,000 depending on your tariff structure. This configuration pairs well with any of our solar panels ranging from 6.6 kW to 10 kW, including Jinko, Trina, Aiko and SunPower.
Approximate installed price: $9,000 to $11,500 incl. GST
Sofar BTS 15 to 20 kWh
Best for: Larger families of 4 to 6 people, high energy users and homes with a heat pump or EV.
With three or four modules delivering 14.25 to 19 kWh of usable storage and up to 10 kW of power output, the larger BTS configurations push Australian households toward genuine energy self-sufficiency. A 15 to 20 kWh Sofar system can achieve self-sufficiency rates of 80 to 90% for most Australian homes when paired with a well-sized rooftop solar system, dramatically reducing grid dependency year-round.
Approximate installed price: $12,000 to $18,000 incl. GST
Sofar Battery Technical Specifications
| Specification | BTS 5K Module (per module) | PowerAll (all-in-one) |
| Energy | ||
| Available capacities | 5.12 kWh per module Up to ~19 kWh per stack · 40 kWh total | 5 kWh – 30 kWh |
| Usable capacity | ~4.75 kWh per module | Varies by config |
| Depth of discharge (DoD) | 92.8% | — |
| Round-trip efficiency | ~94–96% | — |
| Battery chemistry | LFP | LFP |
| Nominal voltage | 400 V HV | — |
| Power | ||
| Rated power output | 2.5 kW per module | Integrated inverter |
| Maximum system power | 10 kW (4 modules) | — |
| Backup switchover time | Via Sofar EPS mode | < 10 ms Faster |
| Longevity | ||
| Cycle life | > 6,000 cycles | — |
| Capacity retention (end of warranty) | ≥ 70% | — |
| Warranty | 10 years | 10 years |
| Physical | ||
| Dimensions (W × H × D) | 708 × 420 × 170 mm | — |
| Weight | 50 kg per module | — |
| IP rating | IP65 | IP65 |
| Cooling method | Natural convection (fanless) | — |
| Installation | Wall-mount or floor-stand | Wall-mounted |
| Operating temp (charging) | 0°C to +50°C | — |
| Operating temp (discharging) | −10°C to +50°C | — |
| System & connectivity | ||
| Inverter | Sofar HYD / ESI Series (separate inverter required) | Integrated No extra inverter |
| Communication | CAN protocol | — |
| Modules per BDU stack | Up to 4 (~19 kWh) | — |
| Max parallel stacks | 2 (up to 40 kWh) | — |
| Monitoring | Solarman Smart App & Sofar Cloud | |
| Backup power | Yes · via Sofar EPS mode | Yes · whole-home backup |
| VPP ready | Yes | — |
| CEC approved | Yes | Yes |
| Pricing (indicative, incl. GST) | ||
| Approx. installed price (AUD) | $5,500 – $7,500 5 kWh config | $7,500 – $18,000 Varies by capacity |
How Does the Sofar Battery Compare to Other Batteries?
We always recommend the battery that genuinely suits your home and budget, not the most expensive option. Here is a transparent comparison of the Sofar BTS against other popular batteries we install. For a broader look at every battery brand we carry, visit our solar battery range or read independent comparisons on our blog.
Feature | Sofar BTS (10 kWh) | ||||
Usable Capacity | 4.75 to 19 kWh | 13.5 kWh | 9.6 to 25.6 kWh | 8.28 to 22.08 kWh | 5.7 to 22.8 kWh |
Max System Size | ✅ 40 kWh (2 stacks) | 54 kWh (4 units) | 25.6 kWh | 22.08 kWh | 22.8 kWh |
Battery Chemistry | ✅ LFP | ❌ NMC | ✅ LFP | ✅ LFP | ✅ LFP |
Round-Trip Efficiency | 94 to 96% | ✅ 97.5% | 96% | 96% | 95% |
Continuous Power Output | 2.5 kW per module (up to 10 kW) | ✅ 11.5 kW | 5 kW | 5.5 kW | 5 kW |
Cycle Life | 6,000+ cycles | Unlimited (warranted) | 6,000+ cycles | 6,000+ cycles | 6,000+ cycles |
Warranty | 10 years | 10 years | 10 years | 10 years | 10 years |
Capacity Retention Guarantee | 70% at 10 years | Not specified | 80% at 10 years | Not specified | Not specified |
Modular / Expandable | ✅ Yes, anytime | ❌ Fixed size | ✅ Yes | ✅ Yes | ✅ Yes |
IP Rating | ✅ IP65 | ✅ IP67 | ✅ IP65 | ⚠️ IP55 | ❌ IP21 indoor only |
Cooling Method | ✅ Fanless | Active cooling | Active cooling | Active cooling | Active cooling |
Blackout Backup | ✅ Yes (EPS mode) | ✅ Yes, whole home | ✅ Yes (hybrid inverter) | ⚠️ Inverter dependent | ⚠️ Selected models only |
Inverter Compatibility | Sofar HYD and ESI only | Tesla compatible only | Sungrow SH Series | ✅ Wide compatibility | Alpha ESS / 3rd party |
Monitoring | Solarman Smart and Sofar Cloud | Tesla App | iSolarCloud | My BYD App | Alpha Cloud |
VPP Ready | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes |
Approx. Installed Price (AUD) | ✅ $9,000 to $11,500 | $14,500 to $17,500 | $7,000 to $13,000 | $8,000 to $15,000 | $6,500 to $12,000 |
Best Suited For | Value-focused new system buyers | Large homes, high demand | Budget-focused buyers | Retrofit installations | Entry-level buyers |
Prices are indicative installed costs including GST as at 2025. All batteries listed are CEC-approved for grid connection in Australia.
Honest summary: The Sofar BTS stands out for its fanless silent operation, IP65 weatherproofing, scalability up to 40 kWh and competitive price per usable kWh. Its key limitation is inverter exclusivity — the BTS requires a Sofar hybrid inverter, so it suits homeowners building a new complete system rather than retrofitting onto an existing non-Sofar inverter. If you have an existing inverter and want to retrofit without replacing it, our team may recommend the BYD Battery-Box instead. Not sure what suits you? Contact Greenlight Solar for an honest recommendation.
Eligible Households Can Be Qualified For Rebates Up To $10,000 On Solar Battery Installation!
Why Choose the Sofar Battery for Your Australian Home?
1. LFP Chemistry: Safe, Stable and Long-Lasting Sofar uses Lithium Iron Phosphate (LFP) chemistry — the safest option for home battery storage. Unlike NMC batteries, LFP cells cannot thermally runaway or combust, and deliver excellent cycle life and stable performance across Australia’s warmer climates.
2. IP65 Rated: Flexible Installation Indoors or Out IP65 weatherproofing means the BTS modules can be installed on an exterior wall, in a garage, carport or utility room. The slim form factor (708 × 420 × 170 mm per module) also takes up minimal wall or floor space compared to bulkier competitors.
3. Genuinely Modular: Start Small, Expand Anytime Start with a single 4.75 kWh module and add more at any time — no need to replace the BDU, inverter or wiring. With two parallel stacks, you can reach up to 40 kWh total, one of the highest residential capacities available in Australia.
4. Competitive Value per kWh At approximately $900 to $1,050 per usable kWh installed, Sofar is one of the most cost-effective LFP battery options from a globally established manufacturer — strong value without compromising on safety or expandability.
5. Fast Backup for Blackout Protection The PowerAll switches to backup power in under 10 milliseconds, keeping lights, fridge and essential appliances running without interruption. The BTS series also supports backup via Sofar hybrid inverter EPS mode — ideal for storm-prone areas.
6. Smart Monitoring and TOU Programming Monitor solar generation, battery charge, consumption and grid usage in real time via the Solarman Smart app and Sofar Cloud. Set up to four time-of-use charge and discharge rules to automatically maximise savings around peak and off-peak tariffs.
7. Fanless and Silent Operation Natural convection cooling means zero fan noise during charge or discharge — suitable for installation near bedrooms, living areas or home offices. Fanless design also reduces mechanical wear and long-term failure risk.
8. Australian Office and Local Support Sofar maintains a dedicated Australian office at 109 Pitt Street, Sydney. Greenlight Solar works directly with Sofar’s local team for technical and warranty matters, backed by our own service networks across NSW, QLD, VIC and WA.
Compatible Inverters for the Sofar Battery
The Sofar BTS series is designed for use with Sofar’s own hybrid and ESI inverter range. This is an important consideration before purchase.
Sofar HYD Series (Single-Phase and Three-Phase Hybrid Inverters): The primary DC-coupled hybrid inverter designed to work with the BTS battery system. Available from 5 kW to 20 kW in three-phase configurations, the HYD series provides full solar, battery and grid management with EPS backup capability and Solarman monitoring integration.
Sofar ESI Series (AC-Coupled Hybrid Inverters): The Sofar ESI allows the BTS battery to be AC-coupled to an existing solar system that already has a non-Sofar solar inverter. This is a practical option for homeowners who want to retain their existing Sungrow inverter, Solis inverter or Enphase inverter while still gaining Sofar battery storage. Our team will assess your existing system during your free assessment to confirm whether this approach is viable and cost-effective. For homeowners on a Goodwe platform, the GoodWe ESA Battery may also be worth comparing as an alternative.
Sofar PowerAll (Integrated Inverter and Battery): The PowerAll requires no separate inverter as the hybrid inverter is factory-integrated into the unit. This is the simplest Sofar option from an installation and compatibility perspective and our recommended starting point for homeowners building a brand new solar and battery system from scratch.
Sofar Battery Installation: What to Expect with Greenlight Solar
Step 1: Free Home Energy Assessment A Greenlight Solar consultant reviews your electricity bills, daily energy usage and existing solar setup. We confirm whether a new Sofar hybrid inverter is required or whether ESI AC-coupled integration with your existing system is viable, and recommend the right BTS capacity or PowerAll size for your household.
Step 2: Obligation-Free Quote With All Rebates Applied You receive a fully itemised written quote including all applicable state and federal government rebates. We handle all paperwork on your behalf so you do not need to complete a single government form.
Step 3: Professional CEC-Accredited Installation Our licensed electricians complete the full installation of the Sofar battery stack, BDU and inverter, typically within a single day for most standard residential jobs. All mounting, cabling, switchboard work and commissioning are backed by Greenlight Solar’s 5-year installation warranty.
Step 4: Grid Connection and Commissioning We manage the DNSP network application and meter upgrade coordination on your behalf. Once approved, your Sofar system is fully commissioned, connected to the Solarman Smart app and Sofar Cloud, and tested across all modes including self-use, time-of-use and EPS backup.
Step 5: Handover and Ongoing Support We walk you through the Solarman Smart app so you can monitor your energy generation, battery status and savings in real time. Our service teams across New South Wales, Queensland, Victoria and Western Australia are available 7 days a week for any after-installation support.
Ready to Get Started with Sofar Battery Storage?
The Sofar BTS and PowerAll are available now through Greenlight Solar across New South Wales, Queensland, Victoria and Western Australia. Our CEC-accredited team will assess your home, confirm the right system size, apply every available government rebate and give you a clear, no-obligation quote.
Call us on 1300 778 257 or get your free quote online and we will be in touch within one business day.
You can also explore our full range of solar inverters, solar panels and EV chargers to build the complete home energy system that suits your lifestyle and budget.
Frequently Asked Questions
The RESU high voltage series is compatible with SolarEdge StorEdge, SMA Sunny Boy Storage, Fronius Symo Hybrid, Goodwe and selected Sungrow hybrid inverters. This wide compatibility is one of the key reasons many Australian homeowners choose the RESU for retrofitting battery storage to an existing solar system. Our team will confirm compatibility during your free site assessment. If your current inverter is not compatible, we will advise on the most cost-effective upgrade path. You can also explore the BYD Battery-Box as another widely compatible option if needed.
Yes. The Sofar BTS range received official Clean Energy Council (CEC) approval for sale in Australia in 2023 and is listed on the CEC Approved Battery Storage Products register. It complies with all relevant Australian Standards and is eligible for grid connection in all Australian states and territories.
The Sofar BTS and PowerAll both use LFP chemistry, the safest residential battery option available. LFP cells cannot thermally runaway or combust under normal fault conditions. The BTS also features a five-layer safety system covering electrical, thermal and environmental protection, and its fanless natural convection cooling eliminates fan-related failure points entirely.
Yes. When paired with a compatible Sofar HYD hybrid inverter in EPS mode, the BTS battery switches to backup power during a grid outage. The Sofar PowerAll switches in less than 10 milliseconds, meaning most appliances will not notice the grid has gone down.
Two BTS modules delivering approximately 9.5 kWh of usable storage will typically power essential evening and overnight loads of a 2 to 4 person household from around 5pm through to 7am the following morning, assuming daily consumption of 15 to 18 kWh. The system then recharges fully from the following day's solar generation.
Yes. You can add additional 5.12 kWh modules to your BDU at any time up to four modules per stack, and add a second parallel stack for a maximum total system capacity of 40 kWh. This is ideal for homeowners planning to add a heat pump or additional load-intensive appliances in the future.
The Sofar BTS carries a 10-year product warranty from the date of installation, guaranteeing the battery retains at least 70% of its original capacity throughout the warranty period subject to a throughput limit of approximately 18.25 MWh per module. Greenlight Solar also provides a 5-year workmanship warranty on all installation labour.
Yes. The Sofar HYD three-phase hybrid inverters support BTS battery integration for commercial solar applications. With up to 40 kWh of storage capacity per system, Sofar is a cost-effective option for small businesses and commercial properties looking to reduce daytime grid import costs.
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