Commercial Solar
Commercial Solar System Sizes for Businesses
Find the right solar system size to suit your business energy needs. Sharp EIT Solutions delivers scalable commercial solar systems backed by expert design, engineering, and long-term support.
Australia-wide Service
Delivering high-efficiency commercial solar systems to businesses across Australia, with expert support wherever you are.
Tailored for Businesses
Custom-designed solar systems to lower your electricity bills and match your business’s unique energy needs.
Expert Install & Support
Seamless installation, expert support, and flexible financing options to make solar affordable for your business.
Find the Right Commercial Solar System Size
Choosing the right solar system isn’t about guesswork—it’s about precision. The best results come from systems that align with your actual energy usage, not just roof size or generic quotes.
Key Considerations When Choosing a System Size
- Load Matching - Your system should match how and when your business uses electricity. We analyse 12 months of data to get it right.
- Avoid Over-Exporting - Oversized systems that export unused energy often lead to lower returns. We design for balance.
- Certified and Compliant - Every system is engineered to meet the latest electrical and structural codes, with all required certifications.
- Minimised Disruption - Our solutions are designed around your business operations to maintain efficiency and reduce downtime.
Commercial Solar Overview
#Compare Solar System Sizes – Small Business to Industrial
Our commercial solar systems are available in a wide range of sizes to suit everything from small offices to large-scale industrial sites.
30kW – 75kW Commercial Solar Systems
Ideal for Offices, Retail & Small Business
Solar systems from 30kW to 75kW are ideal for smaller businesses with steady daytime energy use. Great for retail, professional services, and local sites aiming to lower power costs while maximising savings through STC incentives.
100kW Commercial Solar Systems
Built for Growing Businesses with Higher Energy Use
A 100kW solar system suits larger businesses needing more energy. This size supports access to Large-scale Generation Certificates (LGCs) and is perfect for businesses with steady usage, multi-meter sites, or future expansion plans.
250kW – 500kW Commercial Solar Systems
For Expanding Commercial Facilities
Systems between 250kW and 500kW suit businesses scaling up operations or managing high daytime loads. Common in logistics, storage, healthcare, and education sectors, they offer greater energy independence and strong long-term returns.
500kW – 1MW Solar Systems
Industrial Solar for High-Usage Sites
This range is ideal for manufacturers, distribution centres, and cold storage where energy demand is intensive. These systems deliver consistent power to support machinery, refrigeration, and 24/7 operations, cutting grid reliance significantly.
1MW+ Commercial Solar Solutions
Custom Solar for Large-Scale and Enterprise Projects
Large-scale solar solutions tailored for major businesses, solar farms, and infrastructure projects. Designed for high-load operations, 1MW+ systems offer custom engineering, significant savings, and long-term protection against rising costs.
Solar Car Park Installation for St Marys Rugby League Club
1350 panels installed — currently 40% complete and progressing on schedule.
We’re proud to be delivering a large-scale commercial solar project for St Marys Rugby League Club, combining solar car park canopies with rooftop systems. This live installation is powering the venue while also providing shaded parking for guests and members.
- Over 1,350 panels installed
- Dual-purpose energy generation + guest experience
- Built-in sustainability and energy savings
This active project highlights how forward-thinking clubs and venues are using solar to reduce costs, cut emissions, and unlock greater value from underused spaces. Curious what solar could do for your site?
#Your Questions About Commercial Solar Panels Answered
The right solar system size depends on your average energy usage, available roof space, and future business growth plans. Most small businesses need a 30kW–75kW system, while larger operations may require 100kW or more. Speak to our team to find the best fit.
A general guide is around 7–8m² per kilowatt installed. For example, a 100kW solar system typically needs 700–800m² of roof space. Our solar engineers can assess your site and design a system that maximises your available area.
A 50kW solar system can generate around 70,000kWh per year, while a 100kW system can produce about 140,000kWh annually. Larger systems like 250kW–500kW can generate several hundred thousand kilowatt-hours depending on location and system design.
Yes, many businesses start with a system that matches current needs, with the option to expand later. Our designs can be future-proofed, making it easy to add more solar panels as your energy requirements increase.
Installation time varies depending on system size and site complexity. Most commercial solar installations between 30kW and 100kW are completed in 2–4 weeks, while larger systems may take slightly longer. We’ll provide a full project timeline upfront.