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Solar inverter · Ningbo Sunways Technologies · STS-xKTL series · CEC approval expired

Ningbo Sunways Technologies STS-7KTL

CEC listing: STS-7KTL (AS4777-2 2020)

A 7 kW single-phase solar inverter.

Installed in Perth, typical: ~$2,100; Estimate for the inverter alone — your quote will vary
Rated power: 7kW; How much solar it can run at once
Battery-ready: No; Solar-only: adding a battery later means a second inverter

Compare inverters See the whole STS-xKTL series

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 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.
Its CEC approval has expired, so a new install with it wouldn't qualify for STCs.
We hold no captured datasheet for this model yet, so the specs below come from the CEC register only.

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: 7kW
Phases Runs on a standard single-phase supply: Single
Type Runs solar only: Solar

Full datasheet

Every figure on file for the Ningbo Sunways Technologies STS-7KTL, by section.

Full datasheet, by section
Specification	Value
Efficiency
Max efficiency	98.1%
European efficiency	97.5%
DC input & MPPT
MPPT trackers	2
Physical
IP rating	IP65
Installation requirements
AC breaker	20 A
Cable gauge	4 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.

Features & compatibility

Battery compatible

Backup capable

CEC approval details

CEC approved

23 June 2022

Approval expiry

11 Sept 2025

Status

Not listed

Eligible for rebates

No (not listed)

About Ningbo Sunways Technologies

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

$1,400–$2,800

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: 29.8 kWh
Annual yield: 10,859 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 STS-7KTL against the closest-power inverters from other brands.

Specification	Ningbo Sunways Technologies STS-7KTLNingbo Sunways Technologies	Energizer Force 7.0HS+Energizer	Energizer Force 7.0SEnergizer

Rated power?	7 kW	7 kW	7 kW
Max efficiency?	0.0%	0.0%	0.0%
MPPT trackers?	Not verified	Not verified	Not verified

Phases	Single-phase	Single-phase	Single-phase
Type	Solar	Hybrid	Solar
Battery ready	No	Yes	No
Warranty	Not verified	Not verified	Not verified

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

Documents

Warranty termsPDF, opens in a new tab

Warranty summary

This warranty covers defects in materials and workmanship. It does not cover issues caused by improper installation or environmental factors.

0-year inverter warranty

Ningbo Sunways Technologies STS-7KTL

This warranty covers defects in materials and workmanship. It does not cover issues caused by improper installation or environmental factors.

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: Does not transfer with the home
What voids it: Non-accredited installation or modification voids warranty.
Environment limits: null

Read the official warranty document (PDF)

Fault & error codes — Ningbo Sunways Technologies STS-7KTL

From the install manual

16 documented

Showing 16 of 16. The official install manual is the authoritative source — always confirm before acting.

AC Transducer FaultwarningCall your installer
Manual (PDF)
AC transducer error
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.
Bus Voltage FaultwarningCall your installer
Manual (PDF)
Bus voltage issue
Likely cause
Input voltage may exceed limits.
What to do
Check input voltage and consult installer if needed.
DCI FaultwarningCall your installer
Manual (PDF)
DC input fault
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.
E2 FaultwarningCall your installer
Manual (PDF)
E2 error code
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.
Flash FaultwarningCall your installer
Manual (PDF)
Flash error in the inverter
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.
GFCI Device FaultwarningCall your installer
Manual (PDF)
GFCI device malfunction
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.
GFCI FaultwarningCall your installer
Manual (PDF)
Ground Fault Circuit Interrupter issue
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.
Grid Frequency Faultwarning
Manual (PDF)
Grid frequency problem
Likely cause
Incorrect AC cable or connection issues.
What to do
Ensure AC cable is correct and connected properly.
Grid Voltage Faultwarning
Manual (PDF)
Grid voltage issue
Likely cause
Impedance of AC cable too high or voltage protection range not extended.
What to do
Check AC cable thickness and consult electricity company for voltage protection.
Inverter Over TemperaturewarningCall your installer
Manual (PDF)
Inverter operating too hot
Likely cause
Input voltage may be too high causing overheating.
What to do
Check input conditions and consult installer if needed.
ISO Over LimitationwarningCall your installer
Manual (PDF)
Isolation fault
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.
Mains Lostwarning
Manual (PDF)
Lost mains supply
Likely cause
Check if the mains supply is lost or if the AC breaker and terminal are well connected.
What to do
Check the mains supply and connections.
PV Over Voltagewarning
Manual (PDF)
PV string voltage too high
Likely cause
Too many PV panels causing high voltage.
What to do
Reduce the number of PV panels in the string.
Relay Check FailwarningCall your installer
Manual (PDF)
Relay check unsuccessful
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.
SCI FaultwarningCall your installer
Manual (PDF)
System Control Interface issue
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.
SPI FaultwarningCall your installer
Manual (PDF)
Serial Peripheral Interface problem
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.

Part of the Ningbo Sunways Technologies STS-xKTL series

Compare every Ningbo Sunways Technologies STS-xKTL variant side by side →

More Ningbo Sunways Technologies 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 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.

Solar inverter · Ningbo Sunways Technologies · STS-xKTL series · CEC approval expired

Ningbo Sunways Technologies STS-7KTL

CEC listing: STS-7KTL (AS4777-2 2020)

A 7 kW single-phase solar inverter.

Installed in Perth, typical: ~$2,100; Estimate for the inverter alone — your quote will vary
Rated power: 7kW; How much solar it can run at once
Battery-ready: No; Solar-only: adding a battery later means a second inverter

Compare inverters See the whole STS-xKTL 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 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.
Its CEC approval has expired, so a new install with it wouldn't qualify for STCs.
We hold no captured datasheet for this model yet, so the specs below come from the CEC register only.

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: 7kW
Phases Runs on a standard single-phase supply: Single
Type Runs solar only: Solar

Full datasheet

Every figure on file for the Ningbo Sunways Technologies STS-7KTL, by section.

Full datasheet, by section
Specification	Value
Efficiency
Max efficiency	98.1%
European efficiency	97.5%
DC input & MPPT
MPPT trackers	2
Physical
IP rating	IP65
Installation requirements
AC breaker	20 A
Cable gauge	4 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.

Features & compatibility

Battery compatible

Backup capable

CEC approval details

CEC approved

23 June 2022

Approval expiry

11 Sept 2025

Status

Not listed

Eligible for rebates

No (not listed)

About Ningbo Sunways Technologies

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

$1,400–$2,800

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: 29.8 kWh
Annual yield: 10,859 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 STS-7KTL against the closest-power inverters from other brands.

Specification	Ningbo Sunways Technologies STS-7KTLNingbo Sunways Technologies	Energizer Force 7.0HS+Energizer	Energizer Force 7.0SEnergizer

Rated power?	7 kW	7 kW	7 kW
Max efficiency?	0.0%	0.0%	0.0%
MPPT trackers?	Not verified	Not verified	Not verified

Phases	Single-phase	Single-phase	Single-phase
Type	Solar	Hybrid	Solar
Battery ready	No	Yes	No
Warranty	Not verified	Not verified	Not verified

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

Documents

Warranty termsPDF, opens in a new tab

Warranty summary

This warranty covers defects in materials and workmanship. It does not cover issues caused by improper installation or environmental factors.

0-year inverter warranty

Ningbo Sunways Technologies STS-7KTL

This warranty covers defects in materials and workmanship. It does not cover issues caused by improper installation or environmental factors.

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: Does not transfer with the home
What voids it: Non-accredited installation or modification voids warranty.
Environment limits: null

Read the official warranty document (PDF)

Fault & error codes — Ningbo Sunways Technologies STS-7KTL

From the install manual

16 documented

Showing 16 of 16. The official install manual is the authoritative source — always confirm before acting.

AC Transducer FaultwarningCall your installer
Manual (PDF)
AC transducer error
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.
Bus Voltage FaultwarningCall your installer
Manual (PDF)
Bus voltage issue
Likely cause
Input voltage may exceed limits.
What to do
Check input voltage and consult installer if needed.
DCI FaultwarningCall your installer
Manual (PDF)
DC input fault
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.
E2 FaultwarningCall your installer
Manual (PDF)
E2 error code
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.
Flash FaultwarningCall your installer
Manual (PDF)
Flash error in the inverter
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.
GFCI Device FaultwarningCall your installer
Manual (PDF)
GFCI device malfunction
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.
GFCI FaultwarningCall your installer
Manual (PDF)
Ground Fault Circuit Interrupter issue
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.
Grid Frequency Faultwarning
Manual (PDF)
Grid frequency problem
Likely cause
Incorrect AC cable or connection issues.
What to do
Ensure AC cable is correct and connected properly.
Grid Voltage Faultwarning
Manual (PDF)
Grid voltage issue
Likely cause
Impedance of AC cable too high or voltage protection range not extended.
What to do
Check AC cable thickness and consult electricity company for voltage protection.
Inverter Over TemperaturewarningCall your installer
Manual (PDF)
Inverter operating too hot
Likely cause
Input voltage may be too high causing overheating.
What to do
Check input conditions and consult installer if needed.
ISO Over LimitationwarningCall your installer
Manual (PDF)
Isolation fault
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.
Mains Lostwarning
Manual (PDF)
Lost mains supply
Likely cause
Check if the mains supply is lost or if the AC breaker and terminal are well connected.
What to do
Check the mains supply and connections.
PV Over Voltagewarning
Manual (PDF)
PV string voltage too high
Likely cause
Too many PV panels causing high voltage.
What to do
Reduce the number of PV panels in the string.
Relay Check FailwarningCall your installer
Manual (PDF)
Relay check unsuccessful
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.
SCI FaultwarningCall your installer
Manual (PDF)
System Control Interface issue
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.
SPI FaultwarningCall your installer
Manual (PDF)
Serial Peripheral Interface problem
Likely cause
The inverter may need a restart.
What to do
Restart the inverter.

Part of the Ningbo Sunways Technologies STS-xKTL series

Compare every Ningbo Sunways Technologies STS-xKTL variant side by side →

More Ningbo Sunways Technologies 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 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