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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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An engineering-led solar and battery installer, not a box-shifter

E3 Energy (E Cubic Pty Ltd) designs and installs solar and battery storage for Australian homes and businesses. We start with your bill and usage data, not a product brochure — and we'll tell you when to buy less, or not yet.

Why we exist

Most Australian solar installers are sales-led: the customer is sold a system, not designed one. We sit on the other side of that line. Every install — residential or commercial — starts with bill data and usage intervals, and the system is sized to your roof, your tariff and your load. The team’s track record spans residential, commercial and utility-scale energy projects, which means a commercial client doesn’t get shuffled to a sub-contractor halfway through. Same team, same accountability, from assessment to monitoring.

Jerry Lu

E3 Energy Team

“ We believe energy storage will play a critical role in building a cleaner, smarter, and more resilient energy future for Australian homes and businesses.”

How we work

Three things that separate an engineered install from a sold one.

01

Premium kit only

We install Sigenergy, FOX ESS and JA Solar — no white-label or unbranded kit. Sigenergy for modular, 3-phase and VPP-ready systems; FOX ESS for flexible home battery and inverter setups; JA Solar for the panels.

02

Sized from your data

We review your interval and bill data before quoting, then model what each option does to your running costs — including the trade-offs. You get monitoring of usage, battery state and generation after install.

03

One team, residential to commercial

The same team handles design, installation, commissioning and aftercare — from a single home battery to a commercial energy storage system. Installed by accredited installers; warranty and monitoring supported locally.

What we install

The system types we design and install across home and commercial sites.

Solar + Storage

Solar paired with battery so daytime generation covers the evening peak

Residential Battery Storage

Backup and bill reduction, retrofit to existing solar or as a full system

EV and V2H

EV charging tied into your system; V2H (vehicle-to-home) lets a compatible EV power the house overnight — only the Sigenergy + DC charger combo delivers this in AU today

Containerised ESS

Larger commercial and industrial storage in containerised form for demand management and peak shaving

Off-grid systems

Standalone power for remote sites, farms and industrial loads with no practical grid connection

Energy management platform

Real-time monitoring of usage, generation and battery state across home and commercial sites