Solax Power

Who is Solax Power

Solax Power Network Technology (Zhejiang) Co., Ltd, usually shortened to Solax Power, was founded in 2012 in Hangzhou, China. The company says it built Asia’s first energy storage inverter, an early version of the hybrid inverter it still makes today. In short, hybrid-inverter storage has been Solax’s core business from the start.

Growth followed a fairly steady path. Solax entered the UK market in 2014 through a partnership with distributor Navitron, which is a useful regional example of how the brand typically expands: through local distributors and installer networks rather than direct retail. In 2015, it partnered with LG Chem to pair a residential battery with its X-Hybrid inverters, and by 2017 the two firms had launched a dual-branded battery built on that partnership.

The company broadened into commercial and industrial storage in 2021 with its first commercial string inverter series. It then launched the X3-Ultra three-phase hybrid inverter in 2023, aimed squarely at larger commercial and industrial sites. In January 2024, Solax listed on the Shanghai Stock Exchange’s STAR Market under the stock code 688717, raising around CNY 2.2 billion in its IPO. Shares reportedly rose 58% on their debut, according to International Financing Review.

Solax reported revenue of roughly CNY 4.08 billion for 2025, up by about a third on the year before, although net income fell over the same period. By its own account, the company has shipped over 2 million systems and sells into more than 130 markets, with subsidiaries in Japan, Germany, the United States, the Netherlands, Australia and the UK. That said, these are Solax’s own figures, so we treat them as a scale indicator rather than an independently audited total.

The Solax Power product range

Solax builds its range around two linked product families: hybrid inverters and the Triple Power battery modules that plug into them. It also sells a smaller all-in-one line that bundles both into a single cabinet. As a result, most homes end up with one of three basic setups, depending on budget and how much they expect to expand storage later.

Hybrid inverters

The X1-Hybrid G4 is Solax’s single-phase line, covering 3.0 to 7.5 kW across five models. Each unit has two MPPT trackers, reaches up to 97% efficiency, and works with either lithium or lead-acid batteries. By contrast, the X3-Hybrid G4 is the three-phase equivalent, spanning 5 to 15 kW across six models with efficiency up to 98% and a wide 120 to 800V battery voltage range.

For larger properties and small businesses, the X3-Ultra scales from 15 kW up to 30 kW. It is built for commercial and industrial sites rather than typical homes, and it needs at least three Triple Power HS-series battery units connected before it will run. In other words, this is Solax’s entry point into the commercial and industrial (C&I) storage market, not a residential product.

Triple Power batteries

Triple Power is Solax’s own battery brand, built on lithium iron phosphate (LiFePO4) chemistry throughout. The range is modular, so installers stack individual high-voltage modules to reach the capacity a household needs rather than fitting one fixed-size box.

The T-BAT-SYS-HV-3.0 series pairs with the X1-Hybrid G4 and uses modules of about 2.75 kWh usable capacity each. Stacking one to four modules gives a usable range of roughly 2.8 to 11 kWh. The larger TP-HS3.6 (T-BAT-H) series uses 3.68 kWh nominal modules and stacks further: two to eight modules (7.3 to 29.4 kWh) on an X1-Hybrid G4, or four to thirteen modules (14.7 to 47.9 kWh) on an X3-Hybrid G4 or X3-Ultra.

Both ranges are rated for about 6,000 cycles at 90% depth of discharge, and Solax backs the Triple Power line with a 10-year warranty. Modules can usually be added after the original installation, which means a homeowner can start smaller and expand storage later without swapping out the inverter.

All-in-one IES systems

Launched in January 2024, the X1-IES and X3-IES lines combine an inverter, battery management system and LiFePO4 battery modules in one stackable cabinet. The X1-IES covers single-phase homes from about 3 to 8 kW, while the X3-IES serves three-phase properties from about 5 to 15 kW. In practice, this suits installers who want a tidier, pre-matched package rather than specifying an inverter and battery separately.

Key technology behind Solax Power

Solax’s technology choices centre on safety, flexibility and remote visibility, rather than any single headline feature.

Every Triple Power module uses LiFePO4 chemistry. This is more thermally stable than older lithium-ion chemistries, which is one reason it has become the standard choice across most home battery brands today. In addition, the high-voltage, stackable module design means installers can connect extra capacity in series without adding a second set of inverters, keeping larger systems simpler to wire.

On the inverter side, Solax’s hybrid units switch to backup power in under 10 milliseconds, so most connected devices barely notice a grid outage. Smart load management responds to current-transformer (CT) readings in about 0.3 seconds, which helps the system react quickly to changes in household demand. Meanwhile, PV oversizing of up to 200% lets installers fit more solar panel capacity than the inverter’s rated output, useful on roofs with less-than-ideal orientation.

Monitoring runs through the SolaxCloud app. It refreshes data roughly every five minutes, shows a live flow chart of power moving between panels, battery, grid and household load, and lets installers manage multiple customer sites from one account. Homeowners, meanwhile, get their own simplified view of yield, battery status and any alarms.

Strengths and limitations

No single brand suits every home, so it is worth weighing what Solax does well against where it falls short of rivals.

Where Solax Power fits the market

Solax sits in the same whole-home hybrid-inverter-and-battery tier as brands like GivEnergy, Sunsynk, Fox ESS and Alpha ESS. All of these pair a dedicated hybrid inverter with their own stackable battery, fitted by a trained installer rather than bought off the shelf. None of them compete with the plug-in or portable power station category, and Solax is no exception.

Its modular Triple Power design suits households that want to size a system modestly at first and expand later, since extra modules slot onto the existing inverter rather than forcing a full system swap. The X3-Ultra also gives Solax a foothold in small commercial and industrial storage, a market not every residential-focused battery brand serves.

Geographically, Solax sells into more than 130 markets rather than treating any single country as its default. In the UK, for example, it entered early, in 2014, through a distributor partnership, and its products are now stocked by several major UK solar wholesalers. Even so, that is one regional example among many, not the shape of the brand globally.

If you are weighing Solax against other hybrid-inverter brands, start by working out the capacity your home actually needs. Our battery capacity guides break this down by typical household size, and our home battery calculator turns your own usage into a usable kWh range and a rough payback estimate.

Common questions about Solax Power