SunStak Energy Geeks

We have had 2 years of faultless Solar energy generation and battery storage since we decided to go SunStak. Despite the unsuitability of our roof shape and placement of nearby large trees, it still makes a big difference in our power bills and back up reliability. Their competitive price and quality of installation and service has been second to none. We found them very easy to deal with, giving us frank advice in deciding to go both solar and battery in late 2022. We have since influenced our son and a couple of friends to make the jump to solar power generation via SunStak. Steve and Linda Hill

Sunstak had installed my solar panels 5months ago. I personally recommend Sage since he was the single point of contact when I was planning to have solar panels installed in my house and even answers my emails on Saturdays. I like how he helped us get the best design for my solar panels since my roof has a slope facing south and so far my roof still has enough space to add more solar panels in the future. Also, James and the installers were punctual, polite and did a great job on my roof (no leaks even after the recent 2025 Canberra storms) which shows the high quality of their work. I would definitely get them again when I plan to get batteries installed in my house in the coming months. I highly recommend this company. Cheers Sunstak energy geeks!

We have used Sunstak twice now, for initial solar system installation and later for upgrade with more panels and installation of a battery and EV charger. Initial consultations are easy and very informative, installation and workmanship is very professional and quick and our results have been excellent.

Highly recommended! We engaged SunStak to advise on the electrification of our home at Greenwell Point. Transitioning from grid power and bottled gas to solar. They guided us through the process smoothly, installing solar panels plus battery, EV charger and a hot water heat pump. These modifications to our home are saving us money and are definitely worth the investment. SunStak's professional manner and excellent after sales service has been greatly appreciated. Thank you SunStak team. Great Job! John

Sunstak did a wonderful job installing two Enphase solar batteries and 24 solar panels for my home. The Sunstak team was breath-takingly efficient, and they were such a happy hardworking team. I am now that much closer to having a fully electrified home and for the last month, October, the installation produced energy equivalent to 1.08 ton reduction of CO2 (which is 18 trees). I fully recommend Sunstak - they delivered as they promised and with such grace!

Sunstak have been excellent. In September last year they installed a 13.3 kW system for us using REC solar panels and Fronius inverters. We got three quotes for this system and Sunstak's was the best. In June this year we got them to install Powerwall 2 batteries for us. They have also installed our Fronius Wattpilot for charging our EV and a Sanden hot water heat pump. All installations went very smoothly. Their after sales service has been fisrt class. Everyone has been a delight to deal with.