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Take control of your energy today

Reliable power, predictable energy bills

  1. Get a cutting edge solar and storage system
  2. Protect against outages
  3. Learn why over 1 million customers rely on E3 Energy.

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Battery storage built around how you actually use power

We size solar and battery systems from your usage data — peak times, load profile, tariff and roof — so the kit matches your bills instead of a one-size package. Across Melbourne homes and commercial sites Australia-wide, that means lower running costs, backup when the grid drops, and a system you can actually justify on the numbers.

BILL ANALYSIS

Up To

70%

How it works

BACKUP POWER
Keeps your essentials running through an outage
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.

Designed and installed by accredited installers

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 — SOLAR + STORAGE

Solar plus battery

Store daytime solar and use it through the evening peak, when grid prices are highest. Sized to your roof, tariff and load.

04 — 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.

Indicative scenarios

Worked examples showing how sizing changes the outcome on real Melbourne tariffs. These are indicative scenarios, not customer case studies.

Why E3 Energy

Sized from your data
0 %

Reduce electricity bills by storing and using energy during peak pricing periods.

May 13, 2026

Backup that holds
24/ 0

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

May 12, 2026

One team, end to end
10+ 0

Delivering reliable solar battery storage solutions with long-term technical support and system optimization.

May 15, 2026

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!