Some of our recent installations
Most of the jobs below carry something the customer said about them — on the residential and retrofit work a review they published themselves, quoted word for word, and on the commercial work their project manager, quoted from Sunstak's capability statement. The two features that open the residential rail are documented differently: one from a sale listing, one filmed on site. The count under this line says which is which.
5 case studies · 3 quoted from published reviews · 2 from client statements in Sunstak's capability statement
Residential
Solar and battery on a house, where the roof, the switchboard and the meter decide the design.
22.4 kW of solar and two Powerwalls Red Hill
A luxurious estate in Red Hill
Solar laid across three separate faces of the roof, and two Tesla Powerwalls on the garage wall below. Three-phase supply is what decides the design on a house this size, before anything reaches the roof.
- Solar
- 22.4 kW
- Supply
- Three-phase
- Battery
- Tesla Powerwall 2 × 2
- Battery capacity
- 27 kWh
Solar, a Powerwall 3 and a gateway On film
A house in the trees, above the beach
Richard walks the finished job: a solar array on the roof, a Tesla Powerwall 3 and an Expansion Pack on the wall below it, and a gateway that keeps the house on when the street goes off. Filmed on site, start to finish, in about two minutes.
- Panels
- 12 × WINAICO WBC Ultra Black
- Inverter
- Enphase microinverters
- Battery
- Powerwall 3 + Expansion Pack
- Battery capacity
- 27 kWh
Tesla Powerwall 3 ACT 2906
The spot stayed, the battery changed
The standards decide where a battery can sit: clearances, the wall behind it, and the run back to the switchboard. Here the position the owner wanted stayed, and the battery changed to one rated to live outdoors. A plumber capped a disused gas line on the same visit.
Everything was smooth from the initial quote, through to the installation. There was some initial back and forth about which type of battery to install and location. In the end my preferred location was not going to meet standards which then meant having to change the brand of battery to one that would be more suitable outdoors. This was all handled well by Michael and the team.
Steve SolarQuotes - Battery
- Tesla Powerwall 3
- Battery capacity
- 13.5 kWh
- Siting
- Rated for outdoors
- On the day
- Plumber capped a gas line
Battery retrofits
Storage added to an array that is already on the roof: a switchboard question before it is a battery one.
Second Tesla Powerwall ACT 2600
A second battery, and the first one fixed
The owner wanted a second battery beside one another company had installed a year earlier, so inspecting that first one was part of the job. Faults nobody could see at quoting turned up on the day, and were corrected at no charge.
Sunstak have just added a second Tesla Powerwall battery to my system, which had been installed a year ago by another provider. … The quality and professionalism of the installation was particularly impressive. Several deficiencies in the installation of the existing battery by my previous supplier were rectified without cost or question, even though some were not apparent at the time of quoting.
Peter SolarQuotes - Battery
- Tesla Powerwall 3
- Battery capacity
- 27 kWh, two units
- Existing battery
- Fitted a year earlier by another provider
- Rectification
- Previous supplier's defects, no charge
Battery retrofit ACT 2905
Quoted after looking at the house
Retrofitting storage to an existing array depends on things you can only see on site. The inverter already fitted, spare ways in the switchboard, where a battery can legally sit, and how far that is from the meter. Some of the companies asked to quote this job never visited the house.
I reviewed all of the companies on the ACT Government approved list for a solar battery to add to my existing solar panel system. I sought quotes from the 6 best rated companies. From the 4 quotes I received I chose SunStak. The main reason I chose them was because they were the most responsive, helpful and reasonably priced, a couple of the others didn't even visit the house before quoting.
Berceuse SolarQuotes - Work
- Battery added to an existing array
- Approved list
- ACT Government battery scheme
- Quotes sought
- Six approached, four quoted
- Site visit
- Some competitors quoted without one
Commercial
Schools, embassies and community buildings, where the switchboard and the programme decide as much as the roof does.
Commercial rooftop solar Wanniassa ACT
A school hall in Wanniassa
A school roof is a set-out problem with a deadline attached. The array had to be planned, delivered and commissioned inside the break before the new term, on a site coordinated by somebody else. Forty kilowatts of panels onto one long hall roof, in five days, with six people on it.
Thank you for delivering this project before the start of a new school term
Project Manager, Trinity Christian School Sunstak Capability Statement, July 2025 - Panels
- Trina Solar
- Inverter
- 30 kW Sungrow commercial
- Solar
- 40 kW
- On site
- Five days, six staff
Commercial solar and battery Lyneham ACT
A temple in Lyneham
The temple was referred by community members worried about its power bills: a large, draughty, hard-to-heat complex. Twenty kilowatts of solar and a forty-kilowatt-hour battery, with the meter board upgraded to carry it. The battery is there to hold the peak down, which on a commercial tariff is a separate charge from the energy.
The Abbot is very pleased and wishes to pass on his appreciation and support to get this project delivered
Project Manager, Wat Dhammadharo Sunstak Capability Statement, July 2025 - Solar
- 20 kW
- Battery
- Three Tesla Powerwall 3
- Battery capacity
- 40.5 kWh
- Switchboard
- Meter board upgraded
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