Sigenergy crowned top home battery supplier in Australia, trumping Tesla and Sungrow

Sigenergy has taken just a few years from product launch to dominating the Australian home battery market, with the latest data showing it is now the undisputed top brand in the country.

The Chinese battery manufacturer held 25 per cent market share across 2025 after becoming the top brand in March, says Warwick Johnston, the CEO of industry statistician SunWiz.

Sigenergy has come out of nowhere, taking just three years to go from company launch, in 2022, to debuting its first batteries in 2023, and leading the Australian market by early 2025.

In 2024, the company did not even make Sunwiz’s list of top five brands, which was then topped by Sungrow. But by March 2025, Sigenergy had become the best seller in the Australian market.

Sunwiz data shows it held 17.4 per cent market share of “blended capacity” – that is battery systems proposed, sold and installed – for the month, followed by Sungrow at a close second, Alpha ESS and then Tesla’s Powerwall in fourth place. 

By May that market share hit 31.4 per cent, more than double that of the second-place brand. The company says it has topped the rankings for 10 consecutive months, just as the home battery market experiences a boom, with the federal rebate supporting 200,000 installs since early July.

The success in Australia is being replicated in other markets. Frost & Sullivan has named the company the world’s No. 1 provider of stackable all-in-one distributed energy storage systems. In 2024 alone, Sigenergy shipped 475 MWh, securing 28.6% of the global market for this category.

Johnston says the company is not ready to release the full Australia rankings for 2025 yet.

Home solar-battery installer Lily Pejkic, CEO of Sydney Solar and Batteries, says the Tesla Powerwall is the strong second choice for her customers, because of the known quantity of the brand and reliability. 

“They’ve also got that inbuilt inverter that can go up to 11 kilowatts and you can add panels to the battery system. It’s a premium brand and good for compact areas as well. Or people are looking for a smaller AC-coupled solution,” she tells Renew Economy.

But the Sigenstor system, basically a stackable technology that uses AI to combine battery storage, inverters, DC charging for EVs, vehicle to grid, and smart controls, is the clear favourite, Pejkic says. 

“A lot of people want the 3-phase whole home backup and [the Sigenstor] has also got the larger inverter size, which is suitable for trading power,” she tells Renew Economy.

Cool tech and subsidies

The growth of the Sigenergy brand from nothing to biggest seller comes down to tech and policy. 

“We hear a lot of feedback about how good their technology is, and it does seem that a good part of their success is technological leadership and ease of installation,” Johnston tells Renew Economy.

The start of the federal battery rebate scheme, which kicked in on July 1, “turbocharged” battery sales with its 30 per cent subsidy, says Smart Energy Council chief strategy officer Nigel Morris.

“Australia’s battery boom is driving industry innovation in both established and new entrants within the energy storage sector,” he told Renew Economy.

Safety scare

But it hasn’t all been plain sailing for Sigenergy, after it issued a product recall in November when reports emerged of overheating inverter components and melted plugs.

The recall was for the Sigenstor single phase 8/10/12 kW energy controllers with quick connect AC plug.

The company had already warned installers to follow its process or the batteries would not be covered by warranties. 

The batteries use lithium iron phosphate chemistry and come in 5kWh and 8kWh battery packs, stackable to six units high, and up to 48kWh (plus further parallel capacity).

Sigenergy has moved extremely quickly since it was founded in China by Tony Xu, its current CEO, in 2022.

It had its first small battery in the market in March 2023 – launching in Australia in October that year at All Energy – and by March 2024 had 40 pilot sites in Australia and its single phase range of batteries registered with the Clean Energy Council. 

Registration of its 3-phase range came four months later, and an IPO filing on the Hong Kong stock exchange in September 2025.

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