A 50kW commercial solar system in Melbourne generates around 180 kWh a day on average, or roughly 66,000 kWh a year. It suits medium sized warehouses, factories, larger offices, supermarkets, schools and community facilities with significant daytime electricity use.
At this scale, design matters. Silicon Solar models your load profile, roof layout and network export rules so the system delivers the strongest return, then manages approvals, installation and commissioning from start to finish.
50kW Solar System at a Glance
| Specification | 50kW Solar System |
|---|---|
| Panels | Around 110 to 115 panels at 440W or larger |
| Inverter | Three phase commercial inverters sized to 50kW |
| Roof space needed | About 240 to 260 square metres of usable roof |
| Average daily output in Melbourne | About 180 kWh |
| Estimated yearly output | About 66,000 kWh |
| Best suited to | Warehouses, factories, larger offices, schools, supermarkets |
| Warranties | 25 year panel performance, 10 year inverter (brand dependent) |
Output figures are estimates based on Melbourne’s average solar exposure of roughly 3.6 kWh per kW of panels per day. Actual generation depends on roof orientation, tilt, shading and season. Panel counts vary with the module wattage chosen.
Commercial Grade Solar Panels
Around 110 to 115 x 440W+ Solar Panels
- Tier 1 commercial grade solar modules
- 440W and larger high efficiency panels
- All panels on the Clean Energy Council approved list
- 25 year panel performance warranty
- Local Australian warranty support
Three Phase Commercial Inverters
Three Phase Inverters Sized to 50kW
- Single large inverter or multiple units for redundancy
- Brands such as Fronius, Sungrow, GoodWe and Solis
- Remote online monitoring
- Export limiting and network protection where required
- 10 year warranty on most commercial models
Commercial Roof Mounting
Panel Mounting System
- Racking for tin, Klip-Lok, tile and flat commercial roofs
- Tilt frames to improve output on low pitch roofs
- Anodised aluminium, corrosion resistant
- Engineered for Australian wind loads
- Layouts that keep roof access and walkways clear
Commercial Solar Installation
Installation by Silicon Solar
- Solar Accreditation Australia (SAA) accredited, licensed electricians
- Work scheduled around your trading hours
- Network application and export approval handled for you
- Certificate of Electrical Safety (CES) provided
- Commissioning, monitoring setup and handover
Is a 50kW System Right for Your Business?
A 50kW system suits sites with daytime demand of roughly 150 to 300 kWh per day, for example:
- Warehouses and distribution centres with lighting, cooling and forklift charging
- Factories and fabrication workshops running machinery
- Supermarkets and larger retail with refrigeration
- Schools, childcare centres and community facilities
Larger sites with very high daytime demand may benefit from a 100kW system.
Getting the Best Return from a 50kW System
The return on a 50kW system depends on how much of its output your site consumes. We align the design with your operating hours and loads so more of your solar replaces grid power.
- Orient panels east and west to spread generation across the working day
- Schedule energy intensive processes during peak sun
- Use monitoring to spot changes in consumption
- Plan for future additions such as EV fleet charging or batteries
How We Deliver Your 50kW Solar System
- Energy review. We analyse 12 months of bills or interval data to see when your site uses power.
- Site inspection. We check roof structure, orientation, shading, switchboard capacity and supply.
- Design and proposal. You receive a system design with expected generation, savings and payback.
- Approvals. We manage the network connection application and any export limits your distributor sets.
- Installation and commissioning. Our team installs with minimal disruption, then commissions and tests the system.
- Monitoring and support. You get live monitoring and a local team for warranty and service.
STC Discount, Tax and Finance
Commercial systems up to 100kW are eligible for Small-scale Technology Certificates (STCs) under the federal Small-scale Renewable Energy Scheme. We apply the STC discount directly to your quote, which can make a meaningful difference to the upfront cost. Solar equipment may also be depreciable for tax purposes, so speak with your accountant about how it applies to your business.
Finance options are available, so you can start saving without a large upfront outlay and protect your cash flow.
Why Melbourne Businesses Choose Silicon Solar
Silicon Solar has been installing solar across Victoria since 2015. We are a CEC Approved Solar Retailer, a Solar Victoria Authorised Retailer and NETCC approved, with more than 4,000 customers served and a 4.9 star Google rating.
- Systems designed from your real load profile, not a generic package
- Only Clean Energy Council approved panels and inverters
- Accredited installers and one point of contact from proposal to handover
- Network approvals, STCs, CES and metering managed for you
- Finance options and local Victorian after sales support
Compare other sizes: 25kW commercial solar system and 100kW commercial solar system, or see all commercial solar systems.
Frequently Asked Questions
On average about 180 kWh per day, or roughly 66,000 kWh per year, depending on roof orientation, tilt and shading.
About 240 to 260 square metres of usable roof, using around 110 to 115 panels of 440W or larger.
Medium sized warehouses, factories, larger offices, supermarkets, schools and community facilities with high daytime use.
Yes. Commercial systems of this size need approval from your electricity distributor, and some sites have export limits. We prepare and lodge the application for you.
Yes. Systems up to 100kW are eligible for Small-scale Technology Certificates, applied as a discount on your quote.
Panels carry a 25 year performance warranty and inverters typically carry 10 years, depending on brand.