By Solar Energy Adelaide | 24 June 2025
If you’re looking into solar batteries, chances are you’ve come across Sungrow, Goodwe, and now Sigenergy. And if you’ve gotten a few quotes, you’ve probably noticed: every company recommends something different.
It’s no wonder homeowners in Adelaide feel overwhelmed. According to Reefe Eleftheriou, owner of Solar Energy Adelaide and trusted Adelaide solar battery installer, this confusion is one of the biggest barriers to going solar with confidence:
“People come to me with three different quotes and three different batteries — and they all claim to be the best. No wonder they’re confused.”
Reefe’s spent over a decade working in the South Australian solar & battery industry. He’s not reading spec sheets from a showroom — he’s been on the tools, installing and servicing these systems in real homes and businesses across Adelaide.
And what he’s seen?
Not all brands are created equal.
For a long time, Sungrow and Goodwe were the only contenders when it came to modular battery systems.
They were unique in their design, reliable, and priced toward the premium end of the market. And they had another big advantage: powerful hybrid inverters that could shift big loads of power — perfect for larger homes or even commercial setups.
Over time, they both expanded their range to include even more options including 6kw, 8kw and 10kw hybrid inverters with single and three phase options available.
This made both brands more accessible for Adelaide homes as they offered an inverter and battery solution for every situation. Combined with their reputation, they became a default choice for many solar companies.
But then Sigenergy showed up — and changed the game.
When Reefe started seeing Sigenergy batteries on the market, he was intrigued — and for good reason. These batteries weren’t just an upgrade — they were a leap forward.
“They came in with this single-stack battery that could hold up to 48kWh. That’s more than Sungrow or GoodWe can handle in a single stack. And they packed it with features — AI, full home backup, smart port for solar diversion — everything you could want from a battery.”
It wasn’t just about size. Sigenergy’s AI learns your household’s power usage, and makes smart decisions — like filling up the battery during off-peak rates to help you avoid expensive peak charges later.
For a lot of families in South Australia — especially those juggling rising power costs and trying to run energy-hungry appliances — that kind of smart automation can make a real financial difference.
If you’re reading this and thinking, “Okay, but what does any of that mean for me, sitting in my home in Adelaide?” — Reefe gets it.
The tech talk can get overwhelming, so here’s what he says you should focus on:
Some people hear “AI battery” and worry it’s overcomplicating things. But as Reefe puts it:
“Even if you’re not into AI and just want to leave the battery to it, the SigEnergy means that the battery can make smarter choices for you — like charging at cheaper times, or discharging when the grid is expensive. That could mean up to 40% savings just by letting it do its thing.”
The SigEnergy also comes with a “Smart Port” that can divert solar to your hot water system, pool heater, or EV charger rather than it being sold back to the grid for a lower feed in tariff. That’s money staying in your pocket
This is where Sigenergy really pulls ahead. While many battery systems can only power a few essential circuits during a blackout (like your fridge and a couple of lights), Sigenergy gives you the option of whole-home backup.
Reefe explains it like this:
“If the grid goes down, Sigenergy can power your whole house. That’s not common with other systems unless you do a lot of expensive add-ons.”
Yes, Sungrow is still a reliable and sturdy battery — but maybe not at the price it’s often sold at.
Reefe explains that Sungrow became widely respected because it was one of the first to release a modular battery system that was seen as a premium product. At the time, this was a big step forward in quality and capability.
“They were early to market with a decent modular battery. Back then, it really did lead the pack — and that helped build their reputation.”
Today, Sungrow offers a range of hybrid inverters in different sizes and applications, which means they can suit everything from small homes to large scale, commercial energy users. Their systems are still reliable and well-supported — but they’ve also held onto that “premium” price tag, even as other brands have caught up in performance.
Goodwe has long been known for their well performing solar inverters, and their batteries have followed that same path — reliable, affordable, and well thought out.
Reefe sees GoodWe as one of the most underrated options in the current market:
“It’s really close to Sungrow in terms of what it can do — but you’re paying about 30% less compared to most other high quality modular batteries. For a lot of families, that’s a massive win.”
One thing that sets Goodwe apart is its higher throughput warranty — a technical but important factor. It essentially means the battery is designed to handle more energy over its lifetime before its performance degrades.
· ✅ Affordable without compromising on quality
· ✅ Higher throughput warranty
· ✅ Flexible and compatible with a range of systems
· ✅ A great middle-ground for homes looking to save on energy bills without paying premium pricing
IMPORTANT UPDATE: As of 2026 Goodwe released their latest model the Goodwe ESA. This battery is in response to the Sigenergy battery and levels the playing field.
“They’re all good batteries. But you don’t want to just follow a brand — you want the system that fits your goals.”
Here’s his quick advice:
At Solar Energy Adelaide, we’re proud to be a local, family-run solar business with over a decade of hands-on experience. We don’t offer off-the-shelf packages. We listen, explain, and build solar solutions that fit your home, your budget, and your future.
📞 Reach out today to speak with Reefe or the team, and get honest, expert advice — no jargon, just real support from people who care.
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