Commercial Solar
Solar System Sizes for Businesses
Not sure what size solar system your business needs? We help you compare and select the right commercial solar setup to reduce energy bills and unlock long-term returns — no matter your business size or industry.
Australia-wide Service
High-efficiency commercial solar systems delivered nationwide. Wherever your business is located, we provide local expertise with national support.
Tailored for Businesses
Our solar systems are custom-built to reduce business electricity costs and sized to match your exact usage — from retail to industrial operations.
Expert Install & Support
End-to-end service with certified installers, flexible financing, and long-term performance support to maximise ROI from day one.
What Size Solar System Does Your Business Really Need?
Choosing the right commercial solar system size starts with one question: how much energy does your business really use? The right size helps cut costs, avoid over-exporting, and maximise return on investment.
Why Size Matters for Your Business:
- Energy Matching – We analyse 12+ months of usage data to match your actual electricity demand.
- Avoid Oversizing – Oversized systems often waste energy and reduce ROI. We design with balance.
- Certified Compliance – Every system meets Australian engineering and safety codes.
- Minimised Downtime – We design around your operations, ensuring zero disruption during business hours.
Commercial Solar Overview
#Compare Solar System Sizes
Whether you’re running a small business or scaling a large operation, finding the right commercial solar system size is key to maximising savings and improving energy reliability. From 30kW to 1MW+, explore scalable solar options tailored to your industry, usage, and growth plans.
Ideal for Offices, Retail & Small Business
30kW – 75kW Commercial Solar Systems
Tailored for smaller businesses with steady daytime energy use, 30kW–75kW systems are a smart starting point for reducing power bills. Ideal for retail, clinics, professional services, and council sites looking to lower costs and unlock STC rebates with minimal roof space required.
For Growing Businesses with Higher Energy Demand
100kW Commercial Solar Systems
The 100kW system suits mid-sized businesses scaling operations or running multiple meters. Common in manufacturing, regional facilities, and educational sites, it opens access to LGCs (Large-scale Generation Certificates) while supporting future expansion and consistent usage.
Designed for High-Load Commercial Facilities
250kW – 500kW Commercial Solar Systems
Ideal for commercial buildings with significant daytime loads—think logistics, healthcare, and warehousing. These systems improve energy independence, reduce grid reliance, and offer powerful savings for sites with cooling, machinery, or storage demands.
Built for Industrial-Scale Energy Use
500kW – 1MW Solar Systems
Engineered for intensive sites like factories, cold storage, and distribution centres, these systems support 24/7 power needs while maintaining production stability. Perfect for businesses looking to offset peak tariffs, manage refrigeration, and strengthen grid resilience.
Custom Engineered for Enterprise & Infrastructure Projects
1MW+ Commercial Solar Solutions
Our large-scale solar systems are purpose-built for enterprise sites, government infrastructure, and solar farms. Designed for high-load applications, 1MW+ installations deliver major long-term savings, carbon reductions, and future-ready performance at scale.
#🎥 Hear From One of Our Clients
"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.
$0 Upfront Investment. Long-Term Savings.
Reduce electricity costs without tying up capital. Sharp EIT designs commercial solar systems with $0 upfront finance options to help your business improve cash flow and invest in long-term energy efficiency. (*Subject to credit approval. Terms and conditions apply).
#Need Help Choosing a Solar System Size?
Get expert advice on selecting the right commercial solar system for your energy usage, business type, and infrastructure - from 30kW systems to multi-megawatt installations. We help offices, warehouses, retail, and industrial sites choose scalable, high-performing solar solutions with confidence.
#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.