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Hybrid inverter · Alpha ESS Co Ltd · Stax series · CEC approved August 2026
A 50 kW three-phase hybrid inverter that is battery-ready.
Read from the figures on this page — no review written yet
The numbers that matter for a home. The full datasheet is below.
Rated power
How much solar it can turn into usable power at once
Phases
Needs a three-phase supply — check your switchboard
Type
Runs solar and a battery from one unit
Warranty
How long Alpha ESS Co Ltd stands behind it
Every figure on file for the Alpha ESS Co Ltd M50-INV-AU (AS4777-2 2020), by section.
| Specification | Value |
|---|---|
| Physical | |
| IP rating | IP66 |
| Installation requirements | |
| Cable gauge | 25 mm² |
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.
Battery compatible
Yes
Backup capable
Yes
CEC approved
26 Aug 2026
Approval expiry
26 Aug 2029
Status
Active
Eligible for rebates
Yes
Years in AU Market
9 years
Australian Office
Yes
CEC-Approved Batteries
76
CEC-Approved Panels
0
Category
Mid-Tier
Typical installed, inverter only
$17,500–$30,000
Prices vary by installer, configuration and site complexity. Get exact quotes from installers you choose.
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Western Power approval is required for every grid-connected install. Under Emergency Solar Management, a new system must be remotely manageable, or take an export limit instead — ask your installer to confirm this inverter’s ESM status.
Australian office
Has local presence
Website
www.alpha-ess.com.auThe Alpha ESS Co Ltd M50-INV-AU (AS4777-2 2020) against the closest-power inverters from other brands.
| Specification | Alpha ESS Co Ltd M50-INV-AU (AS4777-2 2020)Alpha ESS Co Ltd | Aiswei Technology Co Ltd ASW50K-LT-G3 (AS4777-2 2020)Aiswei Technology Co Ltd | |
|---|---|---|---|
| Rated power? | 50 kW | 50 kW | 50 kW |
| Max efficiency? | 0.0% | 0.0% | 0.0% |
| MPPT trackers? | Not verified | Not verified | Not verified |
| Phases | Three-phase | Three-phase | Three-phase |
| Type | Hybrid | Solar | Hybrid |
| Battery ready | Yes | No | Yes |
| Warranty | 5 years | Not verified | Not verified |
Specs from the CEC register and datasheet enrichment. Indicative — confirm exact figures with your installer.
Plain-English warranty summary not yet extracted for this product. The official warranty document is the authoritative source.
Part of the Alpha ESS Co Ltd Stax series
Compare every Alpha ESS Co Ltd Stax variant side by side →
M30-INV-AU (AS4777-2 2020)
30 kW · 3φ
SMILE-B3-PLUS (AS4777-2 2020)
3 kW · 1φ
SMILE-B3-PLUS II (AS4777-2 2020)
3 kW · 1φ
SMILE-B3-PLUS III (AS4777-2 2020)
3 kW · 1φ
SMILE-B3-PLUS IV (AS4777-2 2020)
3 kW · 1φ
SMILE-B3-PLUS V (AS4777-2 2020)
3 kW · 1φ
Other CEC-approved products from Alpha ESS Co Ltd available in Australia.
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About this data
All inverter specifications are sourced from the CEC Approved Products Register. Specifications are provided as published by the CEC and may differ from manufacturer datasheets. Verify current specifications with the manufacturer or your installer before purchasing. Not all listed models may be currently available in Western Australia.