Loading Solar Battery Perth...

Home battery · Growatt · ALP series · CEC approved January 2026

Growatt ALP 20.0L-E2

A 20 kWh home battery. Medium home size, the 20 to 30 kWh band.

Installed in Perth, after rebates: ~$11,152Estimate: your own quote will vary
WA Battery Scheme rebate: Depends on your inverterThe scheme needs a Synergy-approved inverter; we don't know yours
Usable capacity: 20kWh
Warranty: 10yrs

ALP 20.0L-E2: the short answer

In the ALP seriesOne of 10 sizes, from 5 to 50 kWh: 20kWhOne of 10 sizes, from 5 to 50 kWh
WA Battery SchemeThe scheme needs a Synergy-approved inverter; we don't know yours: Check eligibilityThe scheme needs a Synergy-approved inverter; we don't know yours

Other sizes in the ALP series

What we can tell you

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

20 kWh sits in the medium home band (20 to 30 kWh).
It is CEC-approved, which is a condition of both the federal STC discount and the WA Battery Scheme.
We can't score it: a value score needs a price and full specs, and without them any number would be guesswork.

Key specs, in plain terms

The numbers that matter for a home. The full datasheet is below.

Usable capacity: 20kWh; How much energy it stores for you to use
Round-trip efficiency: 92%; How much of the energy you store comes back out
Depth of discharge: 90%; How much of the battery you can actually use
Warranty: 10yr; 60% of capacity guaranteed at the end of it
Battery chemistry: LFP; Lithium iron phosphate, the long-cycle-life type
Size and weight: 44kg; Installed weight

Warranty and support

This 10-year warranty covers defects in the battery if used with Growatt systems. Exclusions include damage from tampering. Claims must be submitted within 14 days of the issue.

Product: 10 years; not transferable; full replacement
At year 10: At least 60% of capacity
Throughput: 7 MWh
Installation: Must be installed by an SAA-accredited installer
Support: Australian officeGrowatt Australia; 12 years in the Australian market. Direct manufacturer warranty. Australian consumer law applies.
Perth heat: Rated to 50°C, which covers Perth's hottest days.

Warranty document Datasheet Compare warranties

WA Battery Scheme eligibility

Check eligibility

Synergy SSL inverter pairing, VPP participation and state-rebate qualification for this battery. Rebate and STC amounts are shown in the pricing panel.

CSIP-AUS compliant: Inverter must be CSIP-AUS compliant under the current WA framework.
Synergy SSL approved inverter: Needs pairing with a Synergy SSL approved inverter.
VPP activation ready: VPP activation requires a Synergy SSL approved inverter.
WA Battery Scheme rebate: Requires Battery Rewards participation under the current WA framework.
Synergy Battery Rewards: Requires a CSIP-AUS compliant system and reliable internet.
Interest-free loan: Not eligible for interest-free financing.

Under current WA rules, new rebate applications require VPP enrolment and CSIP-AUS compliance. How the scheme works · Estimate VPP earnings

Full datasheet

Every figure on file for the Growatt ALP, by section.

Cell & chemistry

Chemistry: LFP

Capacity & power

Nominal capacity: 20 kWh
Usable capacity: 20 kWh

Lifespan & degradation

Capacity retained at year 10: 60%
Warranted throughput: 7 MWh

Physical

Weight: 44 kg
IP rating: IP66

Operating environment

Operating temperature: 0°C to 50°C

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.

Documents

Fault & error codes — Growatt ALP

Extracted from the installation manual

6 documented

Showing 6 of 6. The official install manual is the authoritative source — always confirm before acting.

ALMcriticalCall your installer
Manual (PDF)
Alarm indicator is on indicating a fault or protection status.
Likely cause
There is a fault condition such as discharge short circuit, precharge short circuit, or internal communication failure.
What to do
User should stop using the battery and contact the installer for repairs.
Parallel connection failurecriticalCall your installer
Manual (PDF)
Indicates failure in communicating with parallel connected batteries.
Likely cause
Connection issues between batteries.
What to do
Stop using the battery and contact the installer for repairs.
ALM Light FlickerswarningCall your installer
Manual (PDF)
Indicates one of several potential issues including communication loss or discharge under voltage protection.
Likely cause
Communication loss between two batteries or the battery discharging below safe levels.
What to do
Check CAN connections and recharge the battery if under voltage.
Discharge under voltage protectionwarning
Manual (PDF)
Single cell voltage is below the threshold for under-voltage protection.
Likely cause
Over-discharge of the battery.
What to do
Stop discharging the battery and arrange for recharging.
Charge over voltage protectioninfo
Manual (PDF)
Single cell voltage exceeds the threshold for protection.
Likely cause
Improper charging procedures or faulty components.
What to do
Stop charging and wait until the alarm disappears before proceeding.
External CAN Communication failureinfoCall your installer
Manual (PDF)
Communication loss between PCS and PACK.
Likely cause
Failure in the communication connection.
What to do
Check if the communication terminal connections are secure; contact installer if problem persists.

About Growatt

Years in the Australian market: 12+ (CEC-approved products since 2014)
Local support: Not verified
CEC-listed products: 50 models

View full profile →

What it costs in Perth

$15,900

Typical installed price, before rebates

WA Battery Scheme: Depends on your inverter
Federal STCs: −$4,748
You’d pay about: $11,152

The WA Battery Scheme (up to $1,300) needs a Synergy-approved inverter and VPP enrolment. We don't know which inverter you'd pair this with, so it isn't deducted above. Ask your installer. STCs assume about $39.9 a certificate. Estimates only; your quote will vary.

Explore your options

Which size band is your home?

Usable capacity, for one battery system

Smaller home: 10 to 15 kWh
Medium home: 20 to 30 kWh
Big home: 30 to 40 kWh
Very big home: 40+ kWh

This battery is one unit in the medium home band. The WA rebate caps at 10 kWh, but that is a rebate limit, not a sizing guide.

Does waiting change the rebate?

Estimated federal rebate (STCs) for this 20 kWh battery

How it compares

The Growatt ALP 20.0L-E2 against the closest-sized batteries from other brands.

Specification	Growatt ALP 20.0L-E2Growatt	Alpha ESS SMILE-M-BAT-5P IVAlpha ESS	Ambrion AS3-10K-T-W-P4-AUSAmbrion

Usable capacity?	20 kWh	20 kWh	20 kWh
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	Not verified	Not verified
Chemistry	LFP	LFP	LFP

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

More from Growatt

Other CEC-approved products from Growatt available in Australia.

Growatt Inverters

Growatt SPH3000

3 kW

Growatt SPH4000

4 kW

Growatt SPH5000

5 kW

Growatt SPH6000

6 kW

MAX 100KTL3-X LV

100 kW

MAX 110KTL3-X LV

110 kW

View all Growatt inverters

View full Growatt manufacturer profile

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.

This model is one entry in the desk's index of solar batteries for Perth: every CEC-approved battery on one comparable dataset.

Product Information Disclaimer:

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.

Explore your options Compare batteries

Spotted something outdated?