Reduce Your Electricity Bills with Tailored Solar & Battery Solutions

Expert energy advice, professional installation and ongoing local support: for homes and businesses across Melbourne & Victoria. We read your bill first, then size solar & battery to how you actually use power.

BILL ANALYSIS

Up To

70%

How it works

BACKUP POWER
Keeps your essentials running through an outage

Residential & Commercial

Systems sized to how you actually use power: for homes and businesses.

Expert Bill Analysis

We read your electricity bill before we quote. No guessing, no pressure.

Professional Installation

CEC-accredited installation, done right the first time.

Ongoing Local Support

Our own Melbourne team looks after you. Not a call centre.

WHAT WE DO

Solar and battery storage for homes, businesses and commercial sites

We design and install lithium battery storage and solar to cut running costs, hold power through outages, and give commercial sites a clear payback case. From a single home battery to a commercial energy storage system, every install starts with your usage data and uses premium kit only: Sigenergy, FOX ESS and JA Solar.

What are you looking for?

Pick the closest match: each path goes to the right assessment for your situation.

01 · HOME

Home battery and solar

Add a battery to existing solar, or design a full solar-plus-battery system. Lower bills, backup through outages, and VPP-ready options.

02 · COMMERCIAL

Commercial solar and battery

Cut demand charges and peak-period costs with a system sized from your interval data and modelled for payback. Factory, warehouse, office or retail.

03 · OFF-GRID & REMOTE

Off-grid and remote power

Standalone power for farms, remote sites and industrial applications where grid connection isn’t practical. Sized for your daily load and backup needs.

Built for Australian conditions, sized to your site

We engineer for Australian conditions: summer heat, demand peaks, and tariffs that change through the day. Whether it’s keeping a home running through a blackout or holding a commercial site online during a grid fault, the system is sized for your load, not a brochure spec.

Get a system sized to your bills, not a package menu

Send us your latest bill or current solar setup and we'll model what a battery or solar-plus-battery system would actually do for your usage: including where it doesn't stack up. Transparent pricing, no package padding.
Real numbers

See what a battery could save you

Before: grid power
$5,400 /yr
After: solar + battery
$2,100 /yr
Est. yearly saving
≈ $3,300

Illustrative example: a typical all-electric Melbourne home (~25 kWh/day, high evening use) with 10 kW solar + a 13 kWh FOX ESS battery, federal & Victorian rebates applied on a time-of-use tariff. This is an example, not a specific customer result: actual savings depend on your usage, system size, tariff and rebates. Book a free assessment and we’ll model your real numbers.

Book Your Free Energy Assessment
How it works

From first call to switch-on

01

Free Bill Analysis & Assessment

Send us your bill. We assess your usage and site, at no cost.

02

Tailored Proposal

A system and quote sized to your home or business, with rebates applied.

03

Professional Installation

Our CEC-accredited team installs your system: cleanly and on schedule.

04

Ongoing Support & Monitoring

We monitor performance and are here for the life of your system.

E3 Energy solar and battery installation at the Mansfield Heritage Museum
Recent project

Mansfield Heritage Museum

Solar and storage for a new Mansfield Shire Council building. The battery was sized to carry the museum's climate control through the night, and to hold the building up during an outage.

16.15 kWSolar
55.68 kWhFOX ESS battery
See the project

Why E3 Energy

Sized from your data

We read your interval data and your bills before we quote, so the system is sized to how you actually use power.

Backup that holds

Keep critical appliances and business operations running during blackouts and grid failures.

One team, end to end

Our own CEC-accredited team designs, installs and services the system. No subcontractors, no call centre.

After the install

We’re still here after the install

  • System monitoring. We keep watching how your system performs after handover.
  • Warranty handled by us. You deal with our team, not a manufacturer hotline.
  • Our own Melbourne team. No call centre, no subcontractors.
Talk to our team

Residential

Residential Energy Storage

Commercial

Commercial Battery Systems

Monitoring from your phone

Track battery state, solar generation and household or site usage from your phone, so you can see what the system is doing and when it’s paying off.

Battery management built in

The battery management system manages charge, temperature and cell balance for safety and long cycle life: standard across the Sigenergy and FOX ESS kit we install.

Automatic backup

When the grid drops, the system switches your essential circuits to battery automatically. No manual changeover.

Local install and aftercare

Professional installation guidance and after-sales support across Australia.

Not sure if a battery stacks up for you?

Use our free calculator to estimate your savings in under a minute: federal rebate included.

Daren Fung
Daren Fung
@E Cubic Energy
This company is one of the best I've had in Melbourne.I work in the construction industry myself. They are incredibly attentive and patient with details, which is rare. Their professionalism is one aspect... MORE
Frank Greca
Frank Greca
@E Cubic Energy
I recently dealt with and was really impressed with the level of customer service she provided from start to finish. Samantha kept me updated every step of the way, followed up throughout the... MORE
Prem Sharma
Prem Sharma
@E Cubic Energy
Samantha is one of the best sales consultants I have seen and helped me with everything. The installers were awesome and very polite and humble. Loved their work! E3 energy is highly recommended!

Common questions

What size battery do I need?

It depends on how much power you use in the evening, not just your total bill. We read your actual usage before we quote.

Is a battery actually worth it?

For some homes yes, for others not yet. We’ll tell you either way. We model your real numbers rather than quoting a package.