Federal Battery Rebate Available CEC Accredited Award-Winning Installer

Alpha ESS Battery Installation
Melbourne & Regional Victoria

One of Australia's highest-volume battery brands, built for flexibility. Supply Solar installs the Alpha ESS SMILE5 (AC-coupled, retrofit-friendly) and SMILE-M5 (integrated hybrid) series with the federal rebate handled.

See SMILE5 & SMILE-M5 Specs Call 0484 372 744

3,000+

Systems installed across Victoria

4.9★

Google rating · 312 reviews

2024 EUPD Australian Installer Award

Get Your Free Alpha ESS Quote

We'll confirm your rebate eligibility and design

No obligation · We call within 2 business hours

NETCC Approved Seller

CEC Accredited Installers

2023 CEC Collaboration Award

2024 EUPD Installer Award

Call back within 2 hours

Straight answer

What Is an Alpha ESS Battery?

Alpha ESS is one of the highest-volume home battery brands installed in Australia, known for its SMILE series of modular, lithium iron phosphate (LiFePO4) batteries. The SMILE5 connects on the AC side, meaning it can be added to almost any existing solar system without replacing the inverter — while the newer SMILE-M5 is an integrated hybrid unit sized to match Australia's federal rebate tiers.

Flexible AC or DC coupling

SMILE5 is AC-coupled — it works alongside your existing solar inverter, whatever brand it is. Fewer replaced parts, less disruption, lower retrofit cost.

Modular from 2.9kWh to 80kWh

Buy the capacity you need today and add modules later as your usage grows — from a small starter module up to large, high-use households.

Rebate-tier matched sizing

The SMILE-M5 is sized to align with Australia's 14kWh and 28kWh federal rebate tiers, helping you get the most rebate value for your capacity.

Two configurations, one brand

Alpha ESS SMILE5 vs SMILE-M5 — Which One Fits Your Home?

SMILE5 is the flexible retrofit option. SMILE-M5 is the newer, integrated hybrid sized around Australia's rebate tiers.

Specification	Alpha ESS SMILE5	Alpha ESS SMILE-M5
Usable capacity	2.9–13.3 kWh per module, expandable to 80kWh	5–30 kWh, 100% depth of discharge
Coupling	AC-coupled — works with any existing inverter	Integrated hybrid inverter (DC-coupled)
Rebate-tier alignment	Standard sizing	Matched to 14kWh & 28kWh federal rebate tiers
Phase	Single phase (3-phase kits available)	Single phase
Battery chemistry	LiFePO4 (Lithium Iron Phosphate)
Weatherproofing	IP65
Backup capability	UPS-level whole-home backup
Warranty	10 years product & performance · 70% capacity retention guarantee

Specifications per Alpha ESS Australia product documentation. Supply Solar confirms exact configuration and inverter compatibility during your free assessment.

Best Retrofit

Alpha ESS

SMILE5

2.9–80 kWh

AC-coupled · works with any existing inverter

Easiest retrofit option

AC-coupled — adds to any existing solar inverter, no replacement
2.9kWh–13.3kWh modules, stackable to 80kWh
UPS-level whole-home backup capability
IP65 rated, monitored via the Alpha ESS Partner App
10-year warranty · safe LiFePO4 chemistry

Best for: Homes with existing solar wanting to add a battery without touching their current inverter — or homes wanting to start small and expand later.

Get a SMILE5 quote

Rebate-Ready

Alpha ESS

SMILE-M5

5–30 kWh

Integrated hybrid · 100% usable capacity

Matched to rebate tiers

Integrated inverter and battery — one clean unit
13.99kWh & 27.98kWh options — matched to 14kWh/28kWh rebate tiers
100% depth of discharge — every kWh usable
Reduced wiring for faster, cleaner installation
10-year warranty · VPP-ready

Best for: New solar installs wanting an integrated system sized to get the most value from the federal rebate tiers.

Get a SMILE-M5 quote

Side by side

Alpha ESS vs GoodWe ESA vs Sungrow

Every home is different. Use this as a starting point, then talk to our team for a personalised recommendation.

Feature	Alpha ESS SMILE	GoodWe ESA	Sungrow SBR/SBH
Usable capacity	2.9–80 kWh (SMILE5, modular)	5–48 kWh (modular)	6.4–160 kWh (modular, both series)
Coupling	AC-coupled (SMILE5) — works with any inverter	AC-coupled (works with any inverter)	DC-coupled — needs a Sungrow inverter
Rebate-tier matched sizing	Yes — SMILE-M5 matches 14/28kWh tiers	Not specifically tiered	Not specifically tiered
Whole-home backup	UPS-level backup capability	With compatible gateway	With compatible inverter setup
Weatherproofing	IP65	IP66	IP55
Monitoring app	Alpha ESS Partner App	GoodWe SEMS	iSolarCloud
Warranty	10 years · 70% retention guarantee	10 years	10 years · 70% retention guarantee
Best suited to	Budget-conscious homes wanting AC-coupled flexibility & rebate-tier sizing	Existing solar owners wanting the simplest retrofit	Sungrow inverter owners & large/three-phase homes

Contact Supply Solar for a personalised recommendation based on your home's usage, existing inverter and roof.

Victoria · Federal · 2025–2026

Rebates We Apply to Your Alpha ESS Battery

Alpha ESS SMILE batteries are on the Clean Energy Council's approved list — Supply Solar confirms your eligibility and handles all the paperwork.

Cheaper Home Batteries Program (Federal)

The Australian Government's battery rebate, launched 1 July 2025, provides a subsidy on eligible home battery installations — calculated per usable kWh and applied directly to your Alpha ESS quote. The SMILE-M5's 14kWh and 28kWh sizing is built to match the scheme's rebate tiers.

All battery rebates →

Pair With Solar Homes Program

Installing an Alpha ESS battery alongside a new solar system? You may also qualify for the Solar Homes Program rebate at the same time. We check and lodge both — one quote, all rebates confirmed.

Battery rebates VIC →

The Solar Homes income cap drops from $210,000 to $150,000 on 1 July 2026. If you're near the threshold and planning a solar + Alpha ESS install, contact us now to be assessed under the current rules.

Bundle and save

Solar + Alpha ESS Packages

Whether you're retrofitting or starting fresh, Alpha ESS's AC or DC-coupled flexibility makes bundling solar and battery straightforward.

Add SMILE5 to existing solar

Alpha ESS Retrofit

Already have solar but selling too much back to the grid? The AC-coupled SMILE5 adds to your existing inverter — no replacement needed — and we handle the rest.

Works with any existing inverter — no replacement
Federal battery rebate applied
Minimal disruption — usually completed in a day

Get a Retrofit Quote

New solar system + SMILE-M5

Full Solar + Alpha ESS Package

Start from scratch with a SMILE-M5 hybrid system sized to your rebate tier from day one — one integrated unit, no compromises.

Sized to the 14kWh or 28kWh rebate tier
Solar Homes rebate + federal battery rebate lodged
Single installation, single team, one clean quote

Get a Package Quote

Simple & transparent

From Quote to First Charge

Free assessment

We review your power bill, existing inverter and goals to confirm whether SMILE5 or SMILE-M5 is the right fit — no pressure to proceed.

Clear quote

One quote with every applicable rebate already applied — federal battery subsidy, Solar Homes if eligible. No surprises.

We install

Our CEC-accredited team handles the full Alpha ESS installation, inverter pairing or retrofit, grid pre-approval and all compliance paperwork.

Start storing

Your Alpha ESS battery goes live and you start using your own solar around the clock — monitor it all from the Partner App.

Why Melbourne chooses us

Accredited, Award-Winning & Genuinely Local

Award-winning installer

Winners of the 2023 CEC Collaboration Award and the 2024 EUPD Australian Installer Award — the industry's leading recognition for quality installation practice, including Alpha ESS battery systems.

CEC Accredited & NETCC Approved

Your installation is done right, your warranties hold, and your rebates are protected. We carry every credential that matters to Victorian homeowners.

Cranbourne-based, Melbourne-wide

Our team is based in South East Melbourne and services all of greater Melbourne and Regional Victoria. When something needs attention, we're not interstate — we're around the corner.

Rebates & paperwork — all handled

We confirm your eligibility, lodge the Cheaper Home Batteries rebate, and handle grid pre-approvals. Your job is to enjoy the savings.

Across Melbourne & Regional Victoria

Alpha ESS Battery Installation Near You

We install Alpha ESS SMILE batteries right across greater Melbourne and regional Victoria. Find your area below.

South East Melbourne Eastern Melbourne Northern Melbourne Western Melbourne Bayside Melbourne Mornington Peninsula Melbourne CBD Regional Victoria

4.9★ · 312 reviews

What Melbourne Homeowners Say

"Had a SMILE5 retrofitted to our existing 10kW system. Supply Solar checked inverter compatibility first — the AC-coupled design meant we kept our current inverter. Install was clean and the battery went live the same day."

Sarah B.Frankston · Alpha ESS SMILE5 retrofit

"Went with the SMILE-M5 sized to the 28kWh rebate tier — the team explained exactly how the rebate calculation worked before we committed. The quote matched the final bill exactly. No nasty surprises."

Robert M.Berwick · Alpha ESS SMILE-M5

"We did 13kW solar plus a SMILE5 battery as a package, starting with two modules and planning to add a third next year. Supply Solar handled both rebates and sorted the grid approval. Very happy with how flexible it's been."

Linda K.Pakenham · 13kW solar + Alpha ESS SMILE5

Straight answers

Alpha ESS Battery FAQs

How much does an Alpha ESS battery cost in Melbourne?

The installed cost depends on the SMILE model, capacity and whether you're retrofitting to an existing inverter (AC-coupled) or installing new (DC-coupled hybrid). The federal Cheaper Home Batteries Program provides a subsidy on eligible installations, calculated per usable kWh. Get your free quote → with your rebate eligibility confirmed upfront.

Can an Alpha ESS battery work with my existing solar inverter?

Yes, if you choose the SMILE5 AC-coupled configuration. Unlike DC-coupled batteries that require a specific hybrid inverter, the SMILE5 connects on the AC side and works alongside your existing solar inverter, regardless of brand — making it one of the easier batteries to retrofit onto an established system.

Is Alpha ESS a good battery brand in Australia?

Yes. Alpha ESS has been one of the highest-volume battery brands installed in Australia in recent years, with a track record dating back to 2015–2016 locally and an Australian office for warranty and support. The SMILE series uses safe LiFePO4 chemistry with a 10-year product and performance warranty.

What is the difference between the Alpha ESS SMILE5 and SMILE-M5?

The SMILE5 is the AC-coupled, retrofit-friendly option — modules from 2.9kWh to 13.3kWh, expandable to 80kWh, designed to add onto existing solar without replacing the inverter. The SMILE-M5 is a newer hybrid system with an integrated inverter, offering 5–30kWh matched to Australia's 14kWh and 28kWh federal rebate tiers — ideal for new installs wanting a single integrated unit.

Is an Alpha ESS battery worth it in 2026?

For Melbourne homes wanting a modular, competitively priced battery with flexible AC or DC coupling, yes. Alpha ESS sits at the accessible end of the reputable battery brands in Australia, with 100% usable capacity on the SMILE-M5 and proven local support. The federal battery rebate has meaningfully reduced the upfront cost in 2026.

How long does an Alpha ESS battery last?

Alpha ESS batteries carry a 10-year product and performance warranty, guaranteeing at least 70% of usable capacity is retained after 10 years (or a specified energy throughput, whichever comes first). Most systems are expected to perform well for 10 to 15 years of typical daily use.

Can an Alpha ESS battery keep my home running during a blackout?

Yes. Alpha ESS SMILE systems support UPS-level backup, switching to battery power during a grid outage. We design your installation to include backup if that's a priority, and explain which circuits it will support and for how long.

Is the Alpha ESS battery eligible for the federal battery rebate?

Yes. Alpha ESS SMILE batteries are on the Clean Energy Council's approved battery list and eligible for the federal Cheaper Home Batteries Program. Supply Solar checks your eligibility and applies the rebate directly to your quote.

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Ready to Store Your Own Power?

Get a free, no-obligation Alpha ESS battery quote with your federal rebate confirmed and all paperwork handled. A local Supply Solar specialist will call you within 2 business hours.

Get My Free Alpha ESS Quote Call 0484 372 744

No obligation · Federal rebate handled · CEC-accredited · Melbourne & Regional Victoria

Alpha ESS Battery InstallationMelbourne & Regional Victoria