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Hybrid inverter · Ningbo Sunways Technologies · STH-3K~8KTL series · CEC approved November 2023

Ningbo Sunways Technologies STH-8KTL-HS

CEC listing: STH-8KTL-HS (AS4777-2 2020)

An 8 kW single-phase hybrid inverter that is battery-ready.

Installed in Perth, typical: ~$3,800; Estimate for the inverter alone — your quote will vary
Rated power: 8kW; How much solar it can run at once
Battery-ready: Yes; Hybrid: a battery plugs straight in, no second box

Datasheet (PDF)Compare inverters See the whole STH-3K~8KTL series

What we can tell you

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

It is a hybrid inverter: solar and a battery run from the one unit, so adding a battery later doesn't need a second box.
It runs on a standard single-phase supply.
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: 8kW
Max efficiency How much of the solar you make reaches the house: 97.6%
Phases Runs on a standard single-phase supply: Single
Type Runs solar and a battery from one unit: Hybrid
Warranty How long Ningbo Sunways Technologies Co Ltd stands behind it: 10yr

Full datasheet

Every figure on file for the Ningbo Sunways Technologies STH-8KTL-HS, by section.

Full datasheet, by section
Specification	Value
Efficiency
Max efficiency	97.6%
European efficiency	97%
Physical
IP rating	IP65
Installation requirements
Top clearance	100 mm
Side clearance	50 mm
AC breaker	20 A
Cable gauge	6 mm²
Earthing method	TN-S
DNSP pre-approval	Yes
Estimated install time	5 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.

Features & compatibility

Battery compatible

Yes

Backup capable

Yes

CEC approval details

CEC approved

10 Nov 2023

Approval expiry

10 Nov 2026

Status

Active

Eligible for rebates

Yes

About Ningbo Sunways Technologies Co Ltd

Years in AU Market

4 years

Australian Office

Not verified

CEC-Approved Batteries

CEC-Approved Panels

What it costs in Perth

Typical installed, inverter only

$2,800–$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: 34.0 kWh
Annual yield: 12,410 kWh

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

4 years in Australian market

How it compares

The Ningbo Sunways Technologies STH-8KTL-HS against the closest-power inverters from other brands.

Specification	Ningbo Sunways Technologies STH-8KTL-HSNingbo Sunways Technologies	Energizer Force 8.0HS+Energizer	Energizer Force 8.0HT+Energizer

Rated power?	8 kW	8 kW	8 kW
Max efficiency?	97.6%best value	0.0%	0.0%
MPPT trackers?	Not verified	Not verified	Not verified

Phases	Single-phase	Single-phase	Three-phase
Type	Hybrid	Hybrid	Hybrid
Battery ready	Yes	Yes	Yes
Warranty	10 years	Not verified	Not verified

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

Documents

10-year inverter warranty

Ningbo Sunways Technologies STH-8KTL-HS

This warranty covers defects in materials and workmanship for 10 years. It excludes damage from improper installation. To claim, contact customer support.

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, modification, or tampering voids the warranty.
Environment limits: None specified.

Read the official warranty document (PDF)

Fault & error codes — Ningbo Sunways Technologies STH-8KTL-HS

From the install manual

28 documented

Showing 28 of 28. The official install manual is the authoritative source — always confirm before acting.

Flash FaultcriticalCall your installer
Manual (PDF)
Firmware related fault
Likely cause
Corrupted firmware or internal error.
What to do
Restart the inverter; if issue persists, consult installer.
Hard FaultcriticalCall your installer
Manual (PDF)
Critical system fault
Likely cause
Indicates serious issue, possibly hardware-related.
What to do
Restart the inverter; seek immediate assistance from installer.
Inverter OCcriticalCall your installer
Manual (PDF)
Inverter Over Current
Likely cause
Current draw exceeds maximum limits; wiring fault.
What to do
Restart inverter; check system wiring; contact installer.
Inverter OFcriticalCall your installer
Manual (PDF)
Inverter Over Frequency
Likely cause
Faulty frequency detection or grid issue.
What to do
Restart the inverter; seek installer support if necessary.
Inverter OVcriticalCall your installer
Manual (PDF)
Inverter Over Voltage
Likely cause
Voltage level exceeds inverter's capacity.
What to do
Restart inverter; consult installer if issue continues.
Mains LostcriticalCall your installer
Manual (PDF)
Main power supply is lost
Likely cause
Check if the mains supply is interrupted or if there’s an issue with the AC breaker and connections.
What to do
Check the mains supply and connections.
PV Over VoltagecriticalCall your installer
Manual (PDF)
Input voltage from PV panels too high
Likely cause
Too many panels in series resulting in high open-circuit voltage.
What to do
Reduce the number of PV panels in series.
AC Transducer FaultwarningCall your installer
Manual (PDF)
AC current measurement fault
Likely cause
Malfunctioning measurement device.
What to do
Restart the inverter.
Backup OPwarning
Manual (PDF)
Backup operation issue
Likely cause
Excessive loads on the backup system.
What to do
Reduce loads connected in backup; restart inverter.
Backup OVwarningCall your installer
Manual (PDF)
Backup voltage is too high
Likely cause
Potential wiring fault in the backup circuit.
What to do
Restart the inverter; check wiring in backup system.
Bat OVwarning
Manual (PDF)
Battery Over Voltage
Likely cause
Battery voltage exceeds the allowable limit.
What to do
Check battery connections; ensure maximum voltage is not exceeded.
Battery FaultwarningCall your installer
Manual (PDF)
Battery related issue
Likely cause
Can indicate a fault within the battery system.
What to do
Restart inverter; contact installer for battery checks.
Bus Volt LowwarningCall your installer
Manual (PDF)
Low bus voltage detected
Likely cause
Possible internal fault.
What to do
Restart the inverter; contact installer if the issue persists.
Bus Voltage FaultwarningCall your installer
Manual (PDF)
Bus voltage exceeds limits
Likely cause
Check if input voltage is over limitations.
What to do
Check input voltage levels.
DCI FaultwarningCall your installer
Manual (PDF)
DC Input Fault
Likely cause
Inverter malfunction or reset needed.
What to do
Restart the inverter.
E2 FaultwarningCall your installer
Manual (PDF)
General Fault Code E2
Likely cause
Inverter malfunction.
What to do
Restart the inverter.
GFCI Device FaultwarningCall your installer
Manual (PDF)
Ground Fault Device Fault
Likely cause
Inverter malfunction or wiring issue.
What to do
Restart the inverter.
GFCI FaultwarningCall your installer
Manual (PDF)
Ground fault circuit interrupter fault
Likely cause
Fault in ground connection or inverter malfunction.
What to do
Restart the inverter.
Grid Frequency FaultwarningCall your installer
Manual (PDF)
Grid frequency is out of allowable limits
Likely cause
Incorrect AC cables or setup.
What to do
Verify AC cable connections.
Grid Voltage FaultwarningCall your installer
Manual (PDF)
Grid voltage is out of acceptable limits
Likely cause
High impedance in the AC cable or incorrect voltage protection settings.
What to do
Check AC cable connections and possibly change cable size or settings.
Inverter Over TemperaturewarningCall your installer
Manual (PDF)
Inverter overheating
Likely cause
High input voltage or insufficient cooling.
What to do
Check input voltage and ensure proper cooling.
ISO Over LimitationwarningCall your installer
Manual (PDF)
Insulation fault detected
Likely cause
Insulation resistance is below acceptable levels.
What to do
Restart the inverter.
Meter Comm Faultwarning
Manual (PDF)
Meter communication fault
Likely cause
Issues with meter or meter wiring.
What to do
Verify meter connections; check meter for faults.
Phase Order Errwarning
Manual (PDF)
Phase order is incorrect
Likely cause
Improper phase sequence in inverter setup.
What to do
Restart the inverter; verify phase connections.
PV Power Lowwarning
Manual (PDF)
Insufficient power from PV array
Likely cause
PV array may be partially shaded or insufficient sunlight.
What to do
Check PV array for obstructions; verify sunlight availability.
Relay Check FailwarningCall your installer
Manual (PDF)
Relay functionality error
Likely cause
Inverter malfunction.
What to do
Restart the inverter.
SCI FaultwarningCall your installer
Manual (PDF)
Serial Communication Interface Fault
Likely cause
Inverter malfunction or wiring issue.
What to do
Restart the inverter.
SPI FaultwarningCall your installer
Manual (PDF)
SPI Communication Fault
Likely cause
Inverter malfunction or wiring issue.
What to do
Restart the inverter.

Part of the Ningbo Sunways Technologies STH-3K~8KTL series

Compare every Ningbo Sunways Technologies STH-3K~8KTL variant side by side →

More Ningbo Sunways Technologies Co Ltd Inverters

STH-10KTL-HT-P (AS4777-2 2020)

10 kW · 3φ

STH-12KTL-HT-P (AS4777-2 2020)

12 kW · 3φ

STH-3.6KTL-HS (AS4777-2 2020)

3.6 kW · 1φ

STH-3.6KTL-HSS (AS4777-2 2020)

3.6 kW · 1φ

STH-3KTL-HS (AS4777-2 2020)

3 kW · 1φ

STH-3KTL-HSS (AS4777-2 2020)

3 kW · 1φ

View all Ningbo Sunways Technologies Co Ltd inverters

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.

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.

Hybrid inverter · Ningbo Sunways Technologies · STH-3K~8KTL series · CEC approved November 2023

Ningbo Sunways Technologies STH-8KTL-HS

CEC listing: STH-8KTL-HS (AS4777-2 2020)

An 8 kW single-phase hybrid inverter that is battery-ready.

Installed in Perth, typical: ~$3,800; Estimate for the inverter alone — your quote will vary
Rated power: 8kW; How much solar it can run at once
Battery-ready: Yes; Hybrid: a battery plugs straight in, no second box

Datasheet (PDF)Compare inverters See the whole STH-3K~8KTL series

Spotted something outdated?

What we can tell you

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

It is a hybrid inverter: solar and a battery run from the one unit, so adding a battery later doesn't need a second box.
It runs on a standard single-phase supply.
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: 8kW
Max efficiency How much of the solar you make reaches the house: 97.6%
Phases Runs on a standard single-phase supply: Single
Type Runs solar and a battery from one unit: Hybrid
Warranty How long Ningbo Sunways Technologies Co Ltd stands behind it: 10yr

Full datasheet

Every figure on file for the Ningbo Sunways Technologies STH-8KTL-HS, by section.

Full datasheet, by section
Specification	Value
Efficiency
Max efficiency	97.6%
European efficiency	97%
Physical
IP rating	IP65
Installation requirements
Top clearance	100 mm
Side clearance	50 mm
AC breaker	20 A
Cable gauge	6 mm²
Earthing method	TN-S
DNSP pre-approval	Yes
Estimated install time	5 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.

Features & compatibility

Battery compatible

Yes

Backup capable

Yes

CEC approval details

CEC approved

10 Nov 2023

Approval expiry

10 Nov 2026

Status

Active

Eligible for rebates

Yes

About Ningbo Sunways Technologies Co Ltd

Years in AU Market

4 years

Australian Office

Not verified

CEC-Approved Batteries

CEC-Approved Panels

What it costs in Perth

Typical installed, inverter only

$2,800–$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: 34.0 kWh
Annual yield: 12,410 kWh

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

4 years in Australian market

How it compares

The Ningbo Sunways Technologies STH-8KTL-HS against the closest-power inverters from other brands.

Specification	Ningbo Sunways Technologies STH-8KTL-HSNingbo Sunways Technologies	Energizer Force 8.0HS+Energizer	Energizer Force 8.0HT+Energizer

Rated power?	8 kW	8 kW	8 kW
Max efficiency?	97.6%best value	0.0%	0.0%
MPPT trackers?	Not verified	Not verified	Not verified

Phases	Single-phase	Single-phase	Three-phase
Type	Hybrid	Hybrid	Hybrid
Battery ready	Yes	Yes	Yes
Warranty	10 years	Not verified	Not verified

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

Documents

10-year inverter warranty

Ningbo Sunways Technologies STH-8KTL-HS

This warranty covers defects in materials and workmanship for 10 years. It excludes damage from improper installation. To claim, contact customer support.

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, modification, or tampering voids the warranty.
Environment limits: None specified.

Read the official warranty document (PDF)

Fault & error codes — Ningbo Sunways Technologies STH-8KTL-HS

From the install manual

28 documented

Showing 28 of 28. The official install manual is the authoritative source — always confirm before acting.

Flash FaultcriticalCall your installer
Manual (PDF)
Firmware related fault
Likely cause
Corrupted firmware or internal error.
What to do
Restart the inverter; if issue persists, consult installer.
Hard FaultcriticalCall your installer
Manual (PDF)
Critical system fault
Likely cause
Indicates serious issue, possibly hardware-related.
What to do
Restart the inverter; seek immediate assistance from installer.
Inverter OCcriticalCall your installer
Manual (PDF)
Inverter Over Current
Likely cause
Current draw exceeds maximum limits; wiring fault.
What to do
Restart inverter; check system wiring; contact installer.
Inverter OFcriticalCall your installer
Manual (PDF)
Inverter Over Frequency
Likely cause
Faulty frequency detection or grid issue.
What to do
Restart the inverter; seek installer support if necessary.
Inverter OVcriticalCall your installer
Manual (PDF)
Inverter Over Voltage
Likely cause
Voltage level exceeds inverter's capacity.
What to do
Restart inverter; consult installer if issue continues.
Mains LostcriticalCall your installer
Manual (PDF)
Main power supply is lost
Likely cause
Check if the mains supply is interrupted or if there’s an issue with the AC breaker and connections.
What to do
Check the mains supply and connections.
PV Over VoltagecriticalCall your installer
Manual (PDF)
Input voltage from PV panels too high
Likely cause
Too many panels in series resulting in high open-circuit voltage.
What to do
Reduce the number of PV panels in series.
AC Transducer FaultwarningCall your installer
Manual (PDF)
AC current measurement fault
Likely cause
Malfunctioning measurement device.
What to do
Restart the inverter.
Backup OPwarning
Manual (PDF)
Backup operation issue
Likely cause
Excessive loads on the backup system.
What to do
Reduce loads connected in backup; restart inverter.
Backup OVwarningCall your installer
Manual (PDF)
Backup voltage is too high
Likely cause
Potential wiring fault in the backup circuit.
What to do
Restart the inverter; check wiring in backup system.
Bat OVwarning
Manual (PDF)
Battery Over Voltage
Likely cause
Battery voltage exceeds the allowable limit.
What to do
Check battery connections; ensure maximum voltage is not exceeded.
Battery FaultwarningCall your installer
Manual (PDF)
Battery related issue
Likely cause
Can indicate a fault within the battery system.
What to do
Restart inverter; contact installer for battery checks.
Bus Volt LowwarningCall your installer
Manual (PDF)
Low bus voltage detected
Likely cause
Possible internal fault.
What to do
Restart the inverter; contact installer if the issue persists.
Bus Voltage FaultwarningCall your installer
Manual (PDF)
Bus voltage exceeds limits
Likely cause
Check if input voltage is over limitations.
What to do
Check input voltage levels.
DCI FaultwarningCall your installer
Manual (PDF)
DC Input Fault
Likely cause
Inverter malfunction or reset needed.
What to do
Restart the inverter.
E2 FaultwarningCall your installer
Manual (PDF)
General Fault Code E2
Likely cause
Inverter malfunction.
What to do
Restart the inverter.
GFCI Device FaultwarningCall your installer
Manual (PDF)
Ground Fault Device Fault
Likely cause
Inverter malfunction or wiring issue.
What to do
Restart the inverter.
GFCI FaultwarningCall your installer
Manual (PDF)
Ground fault circuit interrupter fault
Likely cause
Fault in ground connection or inverter malfunction.
What to do
Restart the inverter.
Grid Frequency FaultwarningCall your installer
Manual (PDF)
Grid frequency is out of allowable limits
Likely cause
Incorrect AC cables or setup.
What to do
Verify AC cable connections.
Grid Voltage FaultwarningCall your installer
Manual (PDF)
Grid voltage is out of acceptable limits
Likely cause
High impedance in the AC cable or incorrect voltage protection settings.
What to do
Check AC cable connections and possibly change cable size or settings.
Inverter Over TemperaturewarningCall your installer
Manual (PDF)
Inverter overheating
Likely cause
High input voltage or insufficient cooling.
What to do
Check input voltage and ensure proper cooling.
ISO Over LimitationwarningCall your installer
Manual (PDF)
Insulation fault detected
Likely cause
Insulation resistance is below acceptable levels.
What to do
Restart the inverter.
Meter Comm Faultwarning
Manual (PDF)
Meter communication fault
Likely cause
Issues with meter or meter wiring.
What to do
Verify meter connections; check meter for faults.
Phase Order Errwarning
Manual (PDF)
Phase order is incorrect
Likely cause
Improper phase sequence in inverter setup.
What to do
Restart the inverter; verify phase connections.
PV Power Lowwarning
Manual (PDF)
Insufficient power from PV array
Likely cause
PV array may be partially shaded or insufficient sunlight.
What to do
Check PV array for obstructions; verify sunlight availability.
Relay Check FailwarningCall your installer
Manual (PDF)
Relay functionality error
Likely cause
Inverter malfunction.
What to do
Restart the inverter.
SCI FaultwarningCall your installer
Manual (PDF)
Serial Communication Interface Fault
Likely cause
Inverter malfunction or wiring issue.
What to do
Restart the inverter.
SPI FaultwarningCall your installer
Manual (PDF)
SPI Communication Fault
Likely cause
Inverter malfunction or wiring issue.
What to do
Restart the inverter.

Part of the Ningbo Sunways Technologies STH-3K~8KTL series

Compare every Ningbo Sunways Technologies STH-3K~8KTL variant side by side →

More Ningbo Sunways Technologies Co Ltd Inverters

STH-10KTL-HT-P (AS4777-2 2020)

10 kW · 3φ

STH-12KTL-HT-P (AS4777-2 2020)

12 kW · 3φ

STH-3.6KTL-HS (AS4777-2 2020)

3.6 kW · 1φ

STH-3.6KTL-HSS (AS4777-2 2020)

3.6 kW · 1φ

STH-3KTL-HS (AS4777-2 2020)

3 kW · 1φ

STH-3KTL-HSS (AS4777-2 2020)

3 kW · 1φ

View all Ningbo Sunways Technologies Co Ltd inverters

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.

About this data