Melbourne, Victoria, Australia
20 years of electrical industry experience
David Mahoney & Evan Da Silva have completed over 800 solar installations across Victoria.
We manage quality control by ensuring all of our jobs are done in house, not sub-contracted, meaning you see either one of our faces on site at all times.
How We Can Help
Solar
We design and install systems tailored to your home so you can maximise energy savings from day one.
Battery
Get backup protection, lower power bills, and increased energy independence.
Heat Pumps
Efficient, modern hot water solutions that use a fraction of the energy of traditional systems.
Energy Management
From monitoring to optimisation, we help make your home truly energy-efficient.
5-Star Reviews on Google
We had our solar and water heater installed by them last year (we forgot to add this review :) I can’t say enough good things about David and Evan. From the very first consultation, I felt confident that I was in good hands as David was answering each and every detailed question I asked to him. The team was incredibly hardworking, efficient, and genuinely caring about doing the best job possible.
Now it's been almost a year since installation and our system is still perfectly working. The installation went smoothly, and they left my property spotless and when we had an issue next day of installation, Evan came without any hesitation and fixed it immediately.
It’s rare to find such a dedicated and honest team. Thanks David and Evan.
I recently got solar and battery system from David and Evan at Mahoney and Da Silva. First, David came over to do the inspection as part of the quote which was really appreciated as our property roof is not straight forward. David made the effort to maximise the number of panels we could fit. He was also very supportive during the design process and was able to come over and re-measure and re-quote when the design changed. This extra effort was really appreciated.
When I had questions, David was always happy to answer and give me confidence that the system he designed was going to perform well. I was also really happy with the components they supply, the Aiko panels and Sigenergy battery are both well recommended and I'm very happy with them.
We have had the system running now for over a week and basically self-sufficient off grid, so really happy. I definitely recommend David and Evan to do solar and battery install.
From start to finish, Dave and Evan demonstrated the utmost professionalism, guiding us through every step of our solar journey with clarity and patience. They responded to all our questions promptly and provided explanations that made everything easy to understand.
We needed a flexible system to which more panels could be added with future renovations. Their willingness to collaborate when planning and when an unexpected issue arose during installation was greatly appreciated. They took the time to listen to our concerns and worked closely with us to find an effective resolution.
Dave and Evan take pride in their work, ensuring that every detail was handled meticulously. The system installed not only suits our specific needs but looks great as well. Their professionalism, communication, and genuine care for their work sets them apart.
Merrilyn R
I can’t speak more highly of the work and the professionalism that I experienced with Jay and his staff. I am so pleased with the result and I would definitely recommend them to anyone who wants a job well done.
James
The boys did a fantastic job mounting a tv to the wall and connecting all the wiring for the 5G, Foxtel etc. Finisher product looks fantastic. Would recommend.
Why Choose Us
At Mahoney & Da Silva, we only install products we trust. That’s why we use premium solar panels, batteries, and components that are built to last and deliver reliable performance year after year.
Between Evan and myself, we bring over 20 years of electrical-industry experience and have completed more than 800 solar installations across Victoria.
Every job is handled in-house. We never use subcontractors. When you choose us, you’ll see either Evan or myself on site, making sure everything is done to the highest standard.
Ready to Get Started?
We’ll schedule your quote and installation at times that suit you, arrive fully prepared, and get the job done properly the first time.
Tell us about your project and we’ll get back to you within 48 hours. No hidden fees.
Making Solar Accessible For Everyone
We handle all rebates and incentives, making it easier for you to apply and afford the solar system.
Everyone is eligible for the Federal incentive called STC's, basically the bigger your system, the more STC's you will generate.
All panels we choose come with a 25-year warranty and 30-year performance warranty
All mounting/racking systems for the panels come with a 10-year warranty
All other required work, electrical or not, that we do for the installation also comes with a 10-year warranty.
All employees on site are either SAA accredited installers and A-Grade electricians, or electrical apprentices.
As the business owners, we will guarantee buyers satisfaction as you will see first hand how good we are and why we choose to do what we do.
Get a Free Quote!
We will schedule the quote and installation on dates that suit you and we will have all the right equipment with us to do the job properly.
Our Latest Projects
Merrilyn R
I can’t speak more highly of the work and the professionalism that I experienced with Jay and his staff. I am so pleased with the result and I would definitely recommend them to anyone who wants a job well done.
James
The boys did a fantastic job mounting a tv to the wall and connecting all the wiring for the 5G, Foxtel etc. Finisher product looks fantastic. Would recommend.
Frequently Asked Questions
What warranties do you offer?
We use only high-quality equipment backed by strong warranties:
25-year product + 30-year performance warranty on panels
10-year warranty on inverters
10-year warranty on mounting/racking
10-year workmanship warranty on all installation work
Who actually installs my system?
You’ll never get subcontractors. Every installation is completed by Evan or myself (David) and our in-house team of SAA-accredited installers, A-Grade electricians, and apprentices.
Do you handle more than just solar?
Yes. We also install batteries, EV chargers, air conditioning systems, and hot water heat pumps—many of which come with their own rebates. As a licensed electrical contractor, we can help with all your electrical needs.
Can I choose my quote or installation date?
Absolutely. We work around your schedule and arrive fully prepared with the right equipment to get the job done properly the first time.
How do I get a quote or book a job?
Simply fill out the form on this page and our team will reach out to you within 48 hours about your enquiry.
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