Award winning Energy Geeks delivering solar, battery and home electrification solutions
A person installing a large solar panel on the exterior wall of a building. The person is wearing a yellow shirt with the logo and name of a company called 'Sunstak' and a navy cap. The individual has a tattoo on one arm and is holding the solar panel in place.

200+ ★★★★★ Reviews

Read our amazing client reviews from

Multi-award winning solar and battery company

  • SunWiz 2026 Best rated

  • Enphase ACT Installer of the year 2024, 2025

  • Premium Tesla Powerwall Certified Installer since 2021

  • SolarQuotes ACT Top Rated Installer 2024

  • New Energy Tech Consumer Code (NETCC) approved

  • Solar Accreditation Australia (SAA) approved

  • ACT Gov Sustainable Household Scheme participant

REQUEST A QUOTE

SunStak recognised at 2026 SunWiz National Awards

READ MORE
READ MORE
Blue Sunstak icon with a lightning bolt underneath on a dark background.

Multiple award-winning and trusted
Line art illustration of two hands clasped in a handshake with lines radiating outward, symbolizing agreement or unity.

Support for home electrification

ACT and NSW Government Schemes, which offers low-interest loans to help with the costs of energy-efficient upgrades.

If you're eligible, you can receive a low interest loan to repay it over 10 years.

ACT REBATES
NSW LOAN

Quick contact form

Tesla Powerwall Premium Installer

Trusted Premium Tesla Powerwall Installer

Powerwall logo with Tesla emblem and text 'Powerwall Premium Certified Installer' on black background
Powerwall Rebate Page
GET POWERWALL

Enphase Energy Systems

Award winning Platinum Enphase Installer
Enphase Platinum Installer
GET ENPHASE

Smart Air conditioning

ACT Dealer Haier and Fujitsu Air

Fujitsu logo with red text and stylized infinity symbol above the company name.
Blue background with white text reading 'Haier'
GET AIRCON

Hot Water Heat Pump (HWHP)

Haier and Sanden Approved ACT Dealer

Sanden Hot Water Heat Pump Installer
Simple black and white line drawing of a suitcase.
Blue background with white text reading 'Haier'
GET HOT WATER