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Solar inverter · SMA · Sunny Tripower X series · CEC approved August 2026

SMA STP 12-50

CEC listing: STP 12-50 (AS4777-2 2020)

A 12 kW three-phase solar inverter.

Installed in Perth, typical: ~$3,600; Estimate for the inverter alone — your quote will vary
Rated power: 12kW; How much solar it can run at once — a large roof
Battery-ready: No; Solar-only: adding a battery later means a second inverter

Datasheet (PDF)Compare inverters See the whole Sunny Tripower X series

Spotted something outdated?

What we can tell you

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

It is a solar-only inverter: adding a battery later means a second inverter or an AC-coupled battery.
It needs a three-phase supply — check your switchboard, or ask your installer.
We can't confirm it is on Synergy's approved list — a battery paired with it needs that for the WA Battery Scheme, so ask your installer.
It is CEC-approved, which a new install needs to qualify for STCs.

Key specs, in plain terms

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: 12kW
Phases Needs a three-phase supply — check your switchboard: 3-phase
Type Runs solar only: Solar
Warranty How long SMA Australia Pty Ltd stands behind it: 5yr

Full datasheet

Every figure on file for the SMA STP 12-50, by section.

Full datasheet, by section
Specification	Value
Efficiency
European efficiency	98.2%
Physical
Weight	35 kg
IP rating	IP65

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.

Features & compatibility

Battery compatible

Backup capable

CEC approval details

CEC approved

6 Aug 2026

Approval expiry

6 Feb 2027

Status

Active

Eligible for rebates

Yes

About SMA Australia Pty Ltd

Years in AU Market

20 years

Australian Office

Yes

CEC-Approved Batteries

CEC-Approved Panels

What it costs in Perth

Typical installed, inverter only

$2,400–$4,800

Estimate confidence: Medium

Prices vary by installer, configuration and site complexity. Get exact quotes from installers you choose.

Explore your options

Compare quotes from installers you choose

WA compliance

Synergy approved list: Not confirmed
ESM compliant: Check

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.

Perth performance

Estimate for a full-size array on this inverter

Daily yield: 51.0 kWh
Annual yield: 18,615 kWh

At 5 peak sun hours a day (BOM) with a 15% system derate.

Australian office

Has local presence

Website

www.sma-australia.com.au

20 years in Australian market

How it compares

The SMA STP 12-50 against the closest-power inverters from other brands.

Specification	SMA STP 12-50SMA	Energizer Force 12.0HT+Energizer	Afore New Energy Technology AF12K-THAfore New Energy Technology

Rated power?	12 kW	12 kW	12 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	Solar	Hybrid	Hybrid
Battery ready	No	Yes	Yes
Warranty	5 years	Not verified	Not verified

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

Documents

5-year inverter warranty

SMA STP 12-50

This warranty covers the Sunny Tripower X solar inverters for five years, ensuring they function correctly. Exclusions include non-accredited installations and modifications; to claim, contact the installer directly.

AI-summarised from the manufacturer warranty document. Always confirm against the linked PDF before relying on it for a claim.

Coverage shape: Full-replacement coverage
If you sell the home: Transfers to the next homeowner
What voids it: Non-accredited installation or modification of the product voids the warranty.
Environment limits: None stated

Read the official warranty document (PDF)

Fault & error codes — SMA STP 12-50

From the install manual

13 documented

Showing 13 of 13. The official install manual is the authoritative source — always confirm before acting.

1001criticalCall your installer
Manual (PDF)
L/N swapped - Installation fault.
Likely cause
Incorrect installation of the L/N connection.
What to do
Check the AC wiring from the inverter to the feed-in meter.
101criticalCall your installer
Manual (PDF)
Grid incident - Voltage too high.
Likely cause
The grid voltage or grid impedance at the connection point is too high.
What to do
Check the grid voltage at the connection point. If outside permissible range, contact the grid operator.
102criticalCall your installer
Manual (PDF)
Grid incident - Voltage too high.
Likely cause
The grid voltage or grid impedance at the connection point is too high.
What to do
Check the grid voltage at the connection point. If outside permissible range, contact the grid operator.
103criticalCall your installer
Manual (PDF)
Grid incident - Voltage too high.
Likely cause
The grid voltage or grid impedance at the connection point is too high.
What to do
Check the grid voltage at the connection point. If outside permissible range, contact the grid operator.
105criticalCall your installer
Manual (PDF)
Grid incident - Voltage too high.
Likely cause
The grid voltage or grid impedance at the connection point is too high.
What to do
Check the grid voltage at the connection point. If outside permissible range, contact the grid operator.
1101criticalCall your installer
Manual (PDF)
Installation fault - Check connection.
Likely cause
A second line conductor is connected to N.
What to do
Connect the neutral conductor to N.
301criticalCall your installer
Manual (PDF)
Voltage too high.
Likely cause
The ten-minute average value of the grid voltage is no longer within the permissible range.
What to do
Check the grid voltage. If fluctuations occur frequently, contact the grid operator.
401criticalCall your installer
Manual (PDF)
Grid incident - Disconnected.
Likely cause
A stand-alone grid or a very large change in the grid frequency was detected.
What to do
Check for power outages. Contact grid operator if needed.
404criticalCall your installer
Manual (PDF)
Grid incident - Disconnected.
Likely cause
A stand-alone grid or a very large change in the grid frequency was detected.
What to do
Check for power outages. Contact grid operator if needed.
501criticalCall your installer
Manual (PDF)
Grid frequency not permitted.
Likely cause
The grid frequency is not within the permissible range.
What to do
Check grid frequency. Contact grid operator if needed.
302warningCall your installer
Manual (PDF)
Temperature AC voltage - Reduced power.
Likely cause
The inverter has reduced its power due to a too-high grid voltage.
What to do
Check grid voltage and its fluctuations. Contact grid operator if necessary.
507warningCall your installer
Manual (PDF)
Too high grid frequency - Reduced power.
Likely cause
The inverter has reduced its power due to a too-high grid frequency.
What to do
Check grid frequency. Contact grid operator if needed.
6001warningCall your installer
Manual (PDF)
Excess direct current detected.
Likely cause
Direct current in the grid current is too high.
What to do
Check the grid connection for direct current.

Part of the SMA Sunny Tripower X series

Compare every SMA Sunny Tripower X variant side by side →

More SMA Australia Pty Ltd Inverters

SB1.5-1VL-40 (AS4777-2 2020)

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SB2.5-1VL-40 (AS4777-2 2020)

2.5 kW · 1φ

SB3.0-1AV-41 (AS4777-2 2020)

3 kW · 1φ

SB4.0-1AV-41 (AS4777-2 2020)

4 kW · 1φ

SB5.0-1AV-41 (AS4777-2 2020)

5 kW · 1φ

SB6.0-1AV-41 (AS4777-2 2020)

6 kW · 1φ

View all SMA Australia Pty Ltd inverters

More from SMA Australia Pty Ltd

Other CEC-approved products from SMA Australia Pty Ltd available in Australia.

SMA Australia Pty Ltd Batteries

HS-BM-3.28-10

3.28 kWh · LFP

View all SMA Australia Pty Ltd batteries

View full SMA Australia Pty Ltd manufacturer profile

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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.

Solar inverter · SMA · Sunny Tripower X series · CEC approved August 2026

SMA STP 12-50

CEC listing: STP 12-50 (AS4777-2 2020)

A 12 kW three-phase solar inverter.

Installed in Perth, typical: ~$3,600; Estimate for the inverter alone — your quote will vary
Rated power: 12kW; How much solar it can run at once — a large roof
Battery-ready: No; Solar-only: adding a battery later means a second inverter

Datasheet (PDF)Compare inverters See the whole Sunny Tripower X series

Spotted something outdated?

What we can tell you

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

It is a solar-only inverter: adding a battery later means a second inverter or an AC-coupled battery.
It needs a three-phase supply — check your switchboard, or ask your installer.
We can't confirm it is on Synergy's approved list — a battery paired with it needs that for the WA Battery Scheme, so ask your installer.
It is CEC-approved, which a new install needs to qualify for STCs.

Key specs, in plain terms

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: 12kW
Phases Needs a three-phase supply — check your switchboard: 3-phase
Type Runs solar only: Solar
Warranty How long SMA Australia Pty Ltd stands behind it: 5yr

Full datasheet

Every figure on file for the SMA STP 12-50, by section.

Full datasheet, by section
Specification	Value
Efficiency
European efficiency	98.2%
Physical
Weight	35 kg
IP rating	IP65

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.

Features & compatibility

Battery compatible

Backup capable

CEC approval details

CEC approved

6 Aug 2026

Approval expiry

6 Feb 2027

Status

Active

Eligible for rebates

Yes

About SMA Australia Pty Ltd

Years in AU Market

20 years

Australian Office

Yes

CEC-Approved Batteries

CEC-Approved Panels

What it costs in Perth

Typical installed, inverter only

$2,400–$4,800

Estimate confidence: Medium

Prices vary by installer, configuration and site complexity. Get exact quotes from installers you choose.

Explore your options

Compare quotes from installers you choose

WA compliance

Synergy approved list: Not confirmed
ESM compliant: Check

Perth performance

Estimate for a full-size array on this inverter

Daily yield: 51.0 kWh
Annual yield: 18,615 kWh

At 5 peak sun hours a day (BOM) with a 15% system derate.

Australian office

Has local presence

Website

www.sma-australia.com.au

20 years in Australian market

How it compares

The SMA STP 12-50 against the closest-power inverters from other brands.

Specification	SMA STP 12-50SMA	Energizer Force 12.0HT+Energizer	Afore New Energy Technology AF12K-THAfore New Energy Technology

Rated power?	12 kW	12 kW	12 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	Solar	Hybrid	Hybrid
Battery ready	No	Yes	Yes
Warranty	5 years	Not verified	Not verified

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

Documents

5-year inverter warranty

SMA STP 12-50

AI-summarised from the manufacturer warranty document. Always confirm against the linked PDF before relying on it for a claim.

Coverage shape: Full-replacement coverage
If you sell the home: Transfers to the next homeowner
What voids it: Non-accredited installation or modification of the product voids the warranty.
Environment limits: None stated

Read the official warranty document (PDF)

Fault & error codes — SMA STP 12-50

From the install manual

13 documented

Showing 13 of 13. The official install manual is the authoritative source — always confirm before acting.

1001criticalCall your installer
Manual (PDF)
L/N swapped - Installation fault.
Likely cause
Incorrect installation of the L/N connection.
What to do
Check the AC wiring from the inverter to the feed-in meter.
101criticalCall your installer
Manual (PDF)
Grid incident - Voltage too high.
Likely cause
The grid voltage or grid impedance at the connection point is too high.
What to do
Check the grid voltage at the connection point. If outside permissible range, contact the grid operator.
102criticalCall your installer
Manual (PDF)
Grid incident - Voltage too high.
Likely cause
The grid voltage or grid impedance at the connection point is too high.
What to do
Check the grid voltage at the connection point. If outside permissible range, contact the grid operator.
103criticalCall your installer
Manual (PDF)
Grid incident - Voltage too high.
Likely cause
The grid voltage or grid impedance at the connection point is too high.
What to do
Check the grid voltage at the connection point. If outside permissible range, contact the grid operator.
105criticalCall your installer
Manual (PDF)
Grid incident - Voltage too high.
Likely cause
The grid voltage or grid impedance at the connection point is too high.
What to do
Check the grid voltage at the connection point. If outside permissible range, contact the grid operator.
1101criticalCall your installer
Manual (PDF)
Installation fault - Check connection.
Likely cause
A second line conductor is connected to N.
What to do
Connect the neutral conductor to N.
301criticalCall your installer
Manual (PDF)
Voltage too high.
Likely cause
The ten-minute average value of the grid voltage is no longer within the permissible range.
What to do
Check the grid voltage. If fluctuations occur frequently, contact the grid operator.
401criticalCall your installer
Manual (PDF)
Grid incident - Disconnected.
Likely cause
A stand-alone grid or a very large change in the grid frequency was detected.
What to do
Check for power outages. Contact grid operator if needed.
404criticalCall your installer
Manual (PDF)
Grid incident - Disconnected.
Likely cause
A stand-alone grid or a very large change in the grid frequency was detected.
What to do
Check for power outages. Contact grid operator if needed.
501criticalCall your installer
Manual (PDF)
Grid frequency not permitted.
Likely cause
The grid frequency is not within the permissible range.
What to do
Check grid frequency. Contact grid operator if needed.
302warningCall your installer
Manual (PDF)
Temperature AC voltage - Reduced power.
Likely cause
The inverter has reduced its power due to a too-high grid voltage.
What to do
Check grid voltage and its fluctuations. Contact grid operator if necessary.
507warningCall your installer
Manual (PDF)
Too high grid frequency - Reduced power.
Likely cause
The inverter has reduced its power due to a too-high grid frequency.
What to do
Check grid frequency. Contact grid operator if needed.
6001warningCall your installer
Manual (PDF)
Excess direct current detected.
Likely cause
Direct current in the grid current is too high.
What to do
Check the grid connection for direct current.

Part of the SMA Sunny Tripower X series

Compare every SMA Sunny Tripower X variant side by side →

More SMA Australia Pty Ltd Inverters

SB1.5-1VL-40 (AS4777-2 2020)

1.5 kW · 1φ

SB2.5-1VL-40 (AS4777-2 2020)

2.5 kW · 1φ

SB3.0-1AV-41 (AS4777-2 2020)

3 kW · 1φ

SB4.0-1AV-41 (AS4777-2 2020)

4 kW · 1φ

SB5.0-1AV-41 (AS4777-2 2020)

5 kW · 1φ

SB6.0-1AV-41 (AS4777-2 2020)

6 kW · 1φ

View all SMA Australia Pty Ltd inverters