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Home battery · Sigenergy · Sigen Energy Storage System · CEC approved April 2026

Sigenergy SigenStor-12S-40.96

CEC listing: SigenStor-12S-40.96 (AS4777-2 2020)

A 40.6 kWh home battery. Very big home size, the 40+ kWh band.

Installed in Perth, after rebates: ~$28,656Estimate, modelled from its size, Feb 2026 rates
WA Battery Scheme rebate: −$1,300With a Synergy-approved inverter and VPP enrolment
Usable capacity: 40.6kWh
Warranty: 10yrs

Datasheet (PDF)

SigenStor-12S-40.96: the short answer

In the Sigen Energy Storage SystemOne of 91 sizes, from 5.2 to 50 kWh: 40.6kWhOne of 91 sizes, from 5.2 to 50 kWh
WA Battery Scheme$1,300 with a Synergy-approved inverter and VPP enrolment: Likely eligible$1,300 with a Synergy-approved inverter and VPP enrolment
Works withFrom the manufacturer's documentation; the CEC register doesn't list pairings: Sigenergy SigenStorFrom the manufacturer's documentation; the CEC register doesn't list pairings

Other sizes in the Sigen Energy Storage System

What we can tell you

Read from the figures on this page. No review written yet.

40.6 kWh sits in the very big home band (40+ kWh).
It is CEC-approved, which is a condition of both the federal STC discount and the WA Battery Scheme.
We can't score it: a value score needs a price and full specs, and without them any number would be guesswork.

Key specs, in plain terms

The numbers that matter for a home. The full datasheet is below.

Usable capacity: 40.6kWh; How much energy it stores for you to use
Continuous power: Not on file: we don't have this figure from the manufacturer's documents yet; How much it can run at once
Round-trip efficiency: Not on file: we don't have this figure from the manufacturer's documents yet; How much of the energy you store comes back out
Warranty: 10yr; 70% of capacity guaranteed at the end of it
Battery chemistry: LFP; Lithium iron phosphate, the long-cycle-life type

Not on file: we don’t have these figures from the manufacturer’s documents yet, so we leave them blank rather than print typical values. Ask your installer to confirm them on the quote. Seen it in a document? Tell us

Warranty and support

This warranty covers defects in materials and workmanship for up to 10 years. Exclusions include damage due to mishandling. To claim, submit a ticket via the mySigen APP within 30 days of failure.

Product: 10 years; transferable; full replacement
Performance: At least 70% of usable energy for 10 years, or until the throughput limit below is reached, whichever comes first
At one full cycle a day: The 10 years is reached before the throughput limit
Conditions: Kept connected to the internet (offline for more than a year, cover falls to 5 years from activation); installed where it stays between -20°C and 55°C
What is paid for: Parts, labour for repairs on site and basic travel
Coastal sites: No distance from the sea is set, but rust on the enclosure caused by harsh environmental conditions is not covered
Transfer: Passes to the next owner only while the system stays at its original address
Where it applies: Systems installed in Australia or New Zealand on or after 1 November 2023
Claims: Within 30 days of the fault, through the mySigen app, or through the installer or Sigenergy's Australian office when the app is unavailable. The importer is Sigenergy Australia Pty Ltd, North Sydney NSW
At year 10: At least 70% of capacity
Throughput: 15.85 MWh
Installation: Must be installed by an SAA-accredited installer
Support: Australian officeSigenergy Australia; 3 years in the Australian market. Direct manufacturer warranty. Australian consumer law applies.

Series terms from Sigenergy Factory Limited Warranty for SigenStor (For Australia and New Zealand)Warranty document Datasheet Compare warranties

WA Battery Scheme eligibility

Likely eligible

Synergy SSL inverter pairing, VPP participation and state-rebate qualification for this battery. Rebate and STC amounts are shown in the pricing panel.

CSIP-AUS compliant: Inverter must be CSIP-AUS compliant under the current WA framework.
Synergy SSL approved inverter: Pairs with Sigenergy SIGEN ENERGY STORAGE SYSTEM.
VPP activation ready: Ready for Synergy VPP participation.
WA Battery Scheme rebate: Up to $1,300 for Synergy customers (10kWh max eligible).
Synergy Battery Rewards: Requires a CSIP-AUS compliant system and reliable internet.
Interest-free loan: Qualifies for up to $10,000 interest-free.

Under current WA rules, new rebate applications require VPP enrolment and CSIP-AUS compliance. How the scheme works · Estimate VPP earnings

Full datasheet

Every figure on file for the Sigenergy Sigen Energy Storage System, by section.

Cell & chemistry

Chemistry: LFP

Capacity & power

Nominal capacity: 40.96 kWh
Usable capacity: 40.6 kWh

Lifespan & degradation

Capacity retained at year 10: 70%
Warranted throughput: 15.85 MWh

Physical

IP rating: IP66

Installation requirements

Top clearance: 500 mm
Side clearance: 500 mm
Front clearance: 500 mm
AC breaker: 10 A
Cable gauge: 10 mm²
Earthing method: TN-S
DNSP pre-approval: Yes
Estimated install time: 8 hrs

Parsed from the manufacturer datasheet, install manual, and warranty document. Confirm against the linked PDFs before relying on a value for a quote or installation.

Documents

About Sigenergy

Years in the Australian market: 3+ (CEC-approved products since 2023)
Local support: Available
CEC-listed products: 2118 models

View full profile →

What it costs in Perth

$36,540

Estimated installed price, before rebates

Estimatemodelled from its sizeFeb 2026 rates

WA Battery Scheme: −$1,300
Federal STCs: −$6,584
You’d pay about: $28,656

The WA Battery Scheme pays $1,300 on this size when it is installed with a Synergy-approved inverter and enrolled in a VPP. STCs assume about $39.9 a certificate. Estimated installed price, modelled from its size at February 2026 rates. Installer quotes vary.

Explore your options

Which size band is your home?

Usable capacity, for one battery system

Smaller home: 10 to 15 kWh
Medium home: 20 to 30 kWh
Big home: 30 to 40 kWh
Very big home: 40+ kWh

This battery is one unit in the very big home band. The WA rebate caps at 10 kWh, but that is a rebate limit, not a sizing guide.

Does waiting change the rebate?

Estimated federal rebate (STCs) for this 40.6 kWh battery

How it compares

The Sigenergy SigenStor-12S-40.96 against the closest-sized batteries from other brands.

Specification	Sigenergy SigenStor-12S-40.96Sigenergy	Clenergy CGS S5.0 6H7Clenergy	Clenergy CGS S6.0 6H7Clenergy

Usable capacity?	40.6 kWh	40.6 kWh	40.6 kWh
Continuous power?	Not verified	Not verified	Not verified
Peak power?	Not verified	Not verified	Not verified

Round-trip efficiency?	Not verified	Not verified	Not verified
Warranty	10 years	Not verified	Not verified
Chemistry	LFP	LFP	LFP

Specs from the CEC register and datasheet enrichment. Indicative: confirm exact figures with your installer.

More from Sigenergy

Other CEC-approved products from Sigenergy available in Australia.

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Sigen Hybrid 10.0 TP AU

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Sigen Hybrid 12.0 SP AU

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Sigen Hybrid 12.0 TP AU

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Sigen Hybrid 15.0 TP AU

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Sigen Hybrid 17.0 TP AU

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View full Sigenergy manufacturer profile

Want to take the next step?

Get a quote from an installer from our network that covers your area. You choose whether to act on it. No obligation.

This model is one entry in the desk's index of solar batteries for Perth: every CEC-approved battery on one comparable dataset.

Product Information Disclaimer:

Product specifications, pricing, and availability are subject to change without notice. We make no warranties regarding product performance, longevity, or suitability for your specific needs.

Always verify specifications with the manufacturer and installer before purchase. Warranty terms are set by manufacturers and may have conditions not disclosed here. Battery performance degrades over time.

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