The closest thing to a home power plant.

Sigenergy markets the SigenStor as a "5-in-One" system, which is industry-speak for: instead of buying a solar inverter, a battery and an EV charger as three separate boxes that have to be made to talk to each other, you buy one stack. The hybrid inverter sits at the top, the LFP battery modules stack below, and the optional SigenStor Pro adds a 25 kW DC fast EV charger — most EV chargers at home are 7 kW AC, so this is genuinely fast.

The AI-driven energy management system optimises in real time across solar generation, battery charge state, time-of-use tariffs, weather forecasts, and your EV charging schedule. It's the most software-rich battery on this list.

5-in-One stack

Hybrid inverter + battery + optional 25 kW DC EV charger + EMS, all integrated.

AI energy management

Optimises in real time across solar, battery, EV, tariffs and weather.

Stack to 150 kWh

5 stacks in parallel — the most scalable home battery on the Australian market.

6,000+ cycles

LFP chemistry rated for 6,000+ full cycles before reaching the 70% warranty floor.

Technical specs

The numbers, in full.

Module options: 5 kWh or 8 kWh usable LFP modules
Per-stack capacity: Up to 30 kWh usable (6 × 5 kWh modules per stack)
Parallel scaling: Up to 5 stacks = ~150 kWh usable
Inverter: Hybrid, up to 25 kW DC solar input, multiple MPPTs
Optional EV charger: 25 kW DC fast charging — Pro stack only
Battery chemistry: Lithium iron phosphate (LiFePO₄)
Cycle life: 6,000+ cycles to 70% capacity
Backup: Whole-home backup, AC/DC coupled
Energy management: AI EMS — solar, battery, tariff, EV, weather inputs
Configuration: Single-phase or three-phase
Warranty: 10 years · 70% capacity / 15.85 MWh throughput per 5 kWh module
Certification: CEC-approved, AS/NZS 5139

Who it's for

The right call when…

The SigenStor is the system to buy when you already have — or are about to get — an EV. The integrated 25 kW DC charger is a meaningful upgrade over the typical 7 kW AC home charger, and the unified EMS coordinates your solar, battery and car charging without needing a third-party app to glue everything together.

You have an EV (or are getting one) and want fast DC charging at home
You want a single ecosystem instead of stitching together separate inverter / battery / charger
You want to grow into a larger system over time — modular up to 150 kWh
You value software/AI optimisation and don't mind a slightly higher price for it

Honest trade-offs

Where it falls short.

Highest sticker price of the four. Indicative installed cost runs $15,500–$18,500 — about $2k more than the Powerwall 3 at comparable capacity. The premium pays for the integrated EV charger and EMS; if you don't have an EV, you're paying for capability you may not use.

Newer in the Australian market. Sigenergy is a fast-growing global brand but its Australian service footprint is younger than Tesla's or Enphase's. CEC approval and AS/NZS 5139 compliance are in place; long-term local support is still building.

More complex install. The 5-in-One system is more capable but also more involved to commission. Your installer should be Sigenergy-certified — not all CEC-accredited installers are. Your consultant will confirm this before booking the install.

FAQ

Common questions.

Do I need to buy the EV charger module?

No. The SigenStor comes in two configurations — base (inverter + battery) and SigenStor Pro (with the integrated 25 kW DC EV charger). The base config is cheaper and still includes the AI EMS. Add the EV module later if you don't need it now — though it's most cost-effective if installed at the same time.

How does the AI energy management actually save money?

It learns your usage patterns and combines them with weather forecasts and your retailer's time-of-use tariff. Example: on a forecast cloudy morning followed by a sunny afternoon, the EMS will pre-charge the battery from cheap off-peak grid power overnight, then let solar refill the rest of the way at midday. Over a year, that kind of optimisation lifts savings by 5–10% over a static battery.

Will it qualify for the federal battery rebate?

Yes. The SigenStor is on the Clean Energy Council approved-products list and qualifies for the Cheaper Home Batteries Program rebate. The rebate value reduces semi-annually as the program scales.

What's "5 kWh vs 8 kWh modules"?

Sigenergy offers two module sizes. 5 kWh modules are the most common for residential — six per stack gives 30 kWh. The 8 kWh modules let you reach higher capacities in fewer modules and a slightly smaller footprint. Your installer picks based on your space and how much capacity you actually need.

What's the indicative installed price in Australia?

$15,500–$18,500 for a 15–20 kWh SigenStor (single-phase, no EV module) — after the federal Cheaper Home Batteries rebate. Adding the Pro EV-charger module is roughly another $4–6k installed. Three-phase setups and larger stacks run higher.

Sigenergy SigenStor.
Inverter, battery, charger.