Commercial Rooftop Solar Systems for Business
Sharp EIT designs and installs commercial rooftop solar systems for businesses Australia-wide. Our in-house engineering team handles design, approvals, installation and commissioning end-to-end.
- Turn unused roof space into a long-term energy asset
- 20kW–500kW+ rooftop solar systems
- STC rebates applied at point of installation
- Finance options available, including $0 upfront
#You'll Be in Great Company
From Local Businesses to National Brands. Across IT, Print, LED, AV and Commercial Solar solutions Australia-wide.
Is your Building Suitable for Rooftop Solar?
Most commercial buildings are a strong fit for rooftop solar. Key indicators include:
- Your business has consistent daytime energy usage
- Your roof has usable space with minimal shading
- The roof structure and access are suitable for commercial installation
- Your switchboard can support connection (or is upgradeable)
- You want to reduce operational overheads and improve cost certainty
- Even if you lease your site, rooftop solar may still be viable depending on lease term, approvals and energy profile.
Not sure? We can provide a feasibility review based on your bill and site details.
North Ryde RSL
#Featured Project: 100kW Commercial Solar Installation
- System: 100kW commercial solar array (250 panels) installed across a multi-pitch roof in a single day with zero disruption to club operations.
"Sharp EIT made the switch to solar effortless. The install was fast, the team was great to deal with"
Joe Kelly, CEO of North Ryde RSL.
#Commercial Rooftop Solar Finance Options
Many businesses choose rooftop solar because it can improve cashflow and long-term operating certainty.
Options may include:
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Purchase (CAPEX)
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Finance (repayment structures)
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Battery-ready design for future upgrades
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Monitoring and reporting add-ons
We’ll recommend the most practical option based on your goals — reducing cost, improving ROI, or future-proofing your energy strategy.
Solar System Sizes
#Find the Right Commercial Solar System Size
Below is a simple guide to common commercial solar system size ranges. Your best fit depends on your roof space, operating hours and how much of the solar power your business can use onsite.
20kW – 75kW Commercial Solar Systems
Small businesses, offices & clubs
Solar systems in the 20kW–75kW range suit offices, retail, clinics, hospitality venues and smaller industrial sites with steady daytime energy use. This size is often chosen to maximise self-consumption and reduce reliance on grid power during business hours.
We’ll recommend the right fit based on your bill, operating hours and available roof space, then confirm what’s practical based on site constraints, compliance requirements and approvals so the system performs as expected.
100kW - 250kW Commercial Solar Systems
Warehouses, manufacturing & retail
Systems in the 100kW–250kW range suit growing businesses with higher energy demand, including manufacturing, food and beverage, clubs, logistics, education and larger retail. This band is typically sized around daytime baseload to improve savings and cost certainty.
Design at this scale may also consider demand patterns, metering configuration and export limits. We’ll size the system around how your site uses energy and leave room to scale as your business grows.
250kW – 500kW Commercial Solar Systems
Designed for High-Load Commercial Facilities
The 250kW–500kW range is designed for high-load commercial and industrial facilities such as warehouses, processing sites, cold storage and larger manufacturing operations. These systems can deliver strong results when engineered around onsite usage rather than excessive export.
At this size, switchboard capacity, roof structure, network approvals and export constraints can influence design. We’ll tailor the system size to your load profile and confirm what’s achievable for your site.
500kW – 1MW Commercial Solar Systems
Built for Industrial-Scale Energy Use
Solar systems in the 500kW–1MW range suit industrial-scale energy use across distribution centres, multi-building sites, large manufacturing and high-throughput operations. This size band is often used to materially reduce grid reliance and improve long-term cost control.
Projects at this scale typically require detailed engineering and approvals, along with careful integration into existing electrical infrastructure. We’ll recommend a practical size and staging approach based on your operational needs.
1MW+ Commercial Solar Solutions
Engineered for Enterprise & Infrastructure Projects
1MW+ systems are custom engineered for enterprise and infrastructure sites with significant energy demand, including large industrial facilities, agribusiness and complex multi-site operations. This category can also include ground-mounted and solar farm-style projects (where approvals allow).
Design considerations can include multiple arrays, export management, compliance requirements and network approvals. We’ll work from your usage data and site constraints to recommend the right capacity and rollout path.
#Government Incentives for Commercial Solar
Reduce the upfront cost of your commercial solar system with Australian government rebates and incentives.
Most businesses qualify for Small-scale Technology Certificates (STCs), which provide an upfront discount that reduces your installation cost immediately. Many organisations can also benefit from instant asset write-off, accelerated depreciation and other tax-effective incentives.
Every solar proposal includes a clear breakdown of the rebates and incentives your business is eligible for - so you can see the savings from day one.
#Our Commercial Rooftop Solar Installation Process
Sharp EIT delivers commercial rooftop solar installation projects nationwide with an in-house engineering and delivery team — not subcontractors. Every rooftop project follows the same process to ensure your system performs from day one.
1. Feasibility & site assessment
We review your energy bills, operating hours, site constraints and goals to confirm the right commercial solar approach.
2. System design & performance modelling
We design a commercial solar system matched to your load profile, tariffs and roof/land availability — including the right number and layout of commercial solar panels.
3. Approvals, compliance & grid connection
We manage required approvals, compliance checks and grid connection requirements so there are no surprises during install.
4. Commercial solar installation
Our team schedules works to suit your site — staged installation where needed to keep business running.
5. Commissioning, testing & handover
We commission the system, test performance, and provide clear handover documentation so you know exactly what’s been installed and how it operates.
6. Monitoring & ongoing support options
We can provide monitoring and support options to help protect performance and quickly identify issues over time.
#How Much Could Commercial Rooftop Solar Save Your Business?
Request a rooftop solar assessment and we'll model your projected savings based on your actual energy bills, roof space, and load profile.
#Your Questions About Rooftop Solar Panels for Business Answered
Yes. Most commercial buildings can support rooftop solar panels — flat, pitched, metal, concrete tile, and membrane roofs are all workable depending on structure and condition. A quick feasibility review confirms suitability and what system size makes sense for your site.
Commercial rooftop solar systems typically cost $900–$1,200 per kW for smaller systems (20kW–50kW) and $750–$950 per kW for medium systems (50kW–250kW) — before STC rebates. A 100kW rooftop system commonly costs $65,000–$85,000 installed, or $55,000–$75,000 after rebates. We provide fixed quotes based on your bill and site — not generic pricing.
Most rooftop solar installations take 1–5 days on site. Grid connection approvals add 2–8 weeks before installation begins depending on your network and system size. We'll confirm your specific timeline during feasibility.
Yes. We design rooftop solar systems to be battery-ready so storage can be added later without major rework. We'll advise whether battery storage improves ROI now or later based on your load profile and tariff.
Yes. Monitoring and reporting options are available so your business can track solar generation, energy consumption, and system performance in real time — helping identify issues early and protect long-term savings.
Most commercial roof types work well — including corrugated metal (Colorbond), membrane flat roofs, concrete tile, and fibreglass. Metal roofs are generally the most straightforward to install on. We assess roof condition, load capacity, and access during feasibility.
A standard commercial solar panel is approximately 2m x 1m and generates around 400–450W. A 100kW system requires roughly 220–250 panels, needing approximately 400–500m² of usable roof space. Your feasibility assessment will confirm exactly how many panels suit your roof.
Commercial rooftop solar systems under 100kW qualify for Small-scale Technology Certificates (STCs), which typically reduce your net system cost by $400–$600 per kW at point of installation. Systems above 100kW generate Large-scale Generation Certificates (LGCs) on an ongoing basis instead.
Yes. Sharp EIT delivers commercial rooftop solar installation across Australia — including NSW, VIC, QLD, SA, WA, ACT, and regional areas. Our in-house team travels nationally for commercial projects.