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Home battery · Alpha ESS · CEC approved August 2026
A 151.83 kWh home battery — very big home size, the 40+ kWh band.
Read from the figures on this page — no review written yet
The numbers that matter for a home. The full datasheet is below.
Usable capacity
How much energy it stores for you to use
Round-trip efficiency
How much of the energy you store comes back out
Depth of discharge
How much of the battery you can actually use
Warranty
70% of capacity guaranteed at the end of it
Battery chemistry
Lithium iron phosphate — the long-cycle-life type
Every figure on file for the Alpha ESS Stax, by section.
| Specification | Value |
|---|---|
| Lifespan & degradation | |
| Capacity retained at year 10 | 70% |
| Warranted throughput | 433.8 MWh |
| Installation requirements | |
| Top clearance | 500 mm |
| Side clearance | 200 mm |
| Front clearance | 300 mm |
| AC breaker | 50 A |
| Cable gauge | 6 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.
AlphaESS offers a 10-year warranty for the battery, covering defects except for tampering. Claims must be submitted within 4 weeks of an issue.
10
years
433.8
MWh
45°
celsius
Level 0
No Backup
Alpha ESS Australia
Chinese manufacturer with Australian subsidiary.
Suitable with precautions
Rated to 45°C. Plan for a shaded or garage install through Perth summers.
CSIP-AUS compliant
On the Synergy Supported Solutions List (SSL) for remote management.
Synergy SSL approved inverter
Pairs with ALPHA ESS CO LTD SMILE.
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
Earns credits during VPP activation events (up to 30/year).
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
9 years in the Australian market
$136,647
Typical installed price, before rebates
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. Estimates only; your quote will vary.
Usable capacity, for one battery system
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.
STC value for this 151.83 kWh battery
The Alpha ESS M38314-168SNW against the closest-sized batteries from other brands.
| Specification | Alpha ESS M38314-168SNWAlpha ESS | ||
|---|---|---|---|
| Usable capacity? | 151.83 kWh | 152.1 kWhbest value | 152.1 kWhbest value |
| Continuous power? | Not verified | Not verified | Not verified |
| Peak power? | Not verified | Not verified | Not verified |
| Round-trip efficiency? | 92% | 92% | 92% |
| Warranty | 10 years | 10 years | 10 years |
| Chemistry | LFP | LFP | LFP |
Specs from the CEC register and datasheet enrichment. Indicative — confirm exact figures with your installer.
Other CEC-approved products from Alpha ESS available in Australia.
Compare quotes from SAA-accredited local installers — you choose which to act on. 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 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.