Local since 2004. In-house ever since.
Perth Solar Warehouse (PSW Energy) is a 20+ year-old WA company headquartered in Bibra Lake. We design, supply and install solar, battery and EV charging systems with our own CEC-accredited teams — never subcontractors — which is why we can stand behind every roof with a 15-year workmanship warranty, triple the industry standard.
We don't do pressure sales. Quotes are itemised so you can see exactly what every dollar buys, pricing is shown after rebates, and once you have your options the pace is entirely yours.
Milestones
- 2004 — Founded in Perth as part of McKercher Corporation
- 2015 — SolarQuotes-verified review history begins — 4.9★ maintained since
- 2022 — First Tesla Premium Certified accreditation (held every year since)
- 2025 — Sigenergy Marketing Excellence Award at Intersolar; named a WA top-10 installer by volume
- 2026 — 4x SunWiz awards including #1 Local Solar Hero, Perth South West · Neerabup branch announced
The people behind the content
PSW Technical Team
Installation & Design Engineers
CEC Accredited Installers · Licensed Electrical Contractors (WA)
Articles credited to the PSW Technical Team are written and reviewed by Perth Solar Warehouse's in-house CEC-accredited installers and system designers — the same people who design and install our systems across Perth every day.
Derek McKercher
Founder
CEC Accredited Designer · 20+ years industry experience
Derek founded Perth Solar Warehouse in 2004 and has overseen tens of thousands of WA installations. He writes about industry direction, product selection and the WA energy market.
4.9★ Google rating
650+ verified reviews
4x SunWiz 2026 awards
#1 Local Solar Hero, Perth South West
Tesla Premium Certified
4 consecutive years
15-year workmanship warranty
In-house teams, never subcontractors
Independently recognised
- SunWiz 2026 — #1 Local Solar Hero, Perth South West
- SunWiz 2026 — Top 5 WA Battery (ESS) Installer by Volume
- SunWiz 2026 — Top 5 WA Solar (PV) Installer by Volume
- SunWiz 2026 — #2 Most Popular Installer, WA
- Tesla Premium Certified Installer (4 consecutive years)
- Sigenergy Marketing Excellence Award — Intersolar 2025