Commercial Solar System Costs

Commercial solar systems typically cost around $700–$1,200 per kW installed after applicable incentives, with larger systems generally achieving a lower cost per kW. As a guide, a 100kW commercial solar system may cost around $70,000–$100,000 after applicable incentives for a standard rooftop installation.

Actual pricing depends on system size, site conditions, equipment, electrical infrastructure and network requirements.

For a broader overview of system types and options, visit our Commercial Solar Solutions page.

Commercial solar costs generally decrease per kW as system size increases. Smaller systems may sit towards the upper end of the $700–$1,200 per kW range, while larger systems can benefit from economies of scale.

Final pricing also depends on roof conditions, electrical requirements, equipment selection and installation complexity.

Learn more about commercial solar system sizes.

Commercial solar installation costs depend on the system size, roof or site conditions, electrical infrastructure, access requirements and the complexity of the installation.

Costs can also be affected by switchboard upgrades, structural works, metering, network protection and grid connection requirements. These are assessed as part of the project so they can be factored into the overall commercial solar system cost before installation.

Commercial solar payback depends on the project cost, electricity tariffs, daytime energy use, applicable incentives and how much solar generation is consumed onsite. Many well-matched commercial solar projects can achieve payback in around 2–4 years, although the actual result varies by site and system design.

Sharp EIT models projected electricity savings, payback and estimated ROI using your actual energy profile so you can assess the financial case before investing.

Government incentives may reduce the upfront cost of eligible commercial solar systems, with the support available depending on system size, installation date and current government schemes.

Sharp EIT can identify the incentives your project may qualify for and factor their estimated value into your commercial solar cost, savings and payback modelling.

Businesses can either purchase commercial solar outright or, if eligible, use commercial finance to spread the project cost over an agreed term.

The right option depends on project cost, cash flow and investment priorities. Sharp EIT can compare upfront CAPEX with finance options, including $0 upfront structures for eligible businesses.

Compare our Solar Finance Options.

Yes. Adding battery storage increases the upfront project cost, with pricing depending on battery capacity, technology, site infrastructure and integration requirements.

The important question is whether battery storage improves the overall business case by increasing solar self-consumption, reducing peak demand, shifting energy use or providing backup power.

Learn more about Commercial Battery Storage.

Common cost drivers include roof condition and access, structural requirements, switchboard upgrades, network connection requirements, metering, system size, equipment selection and battery storage.

A site-specific assessment identifies which of these factors apply before the final system design and project cost are confirmed.

Commercial solar can be a worthwhile investment for businesses with sufficient electricity usage, particularly where a high proportion of power is consumed during daylight hours.

The financial case depends on project cost, electricity tariffs, applicable incentives, expected solar generation, onsite consumption, payback period and estimated ROI. Sharp EIT models these factors using your actual energy profile so you can assess the return before proceeding.

The right commercial solar system size depends on your electricity usage, operating hours, available roof or land area, future energy requirements and network constraints.

Sharp EIT uses your interval data and site profile to recommend a system size designed around onsite solar use, expected savings and financial return rather than simply installing the largest system that will fit.

Yes. Commercial solar can be combined with battery storage and EV charging infrastructure as part of a broader energy solution.

Whether these additions make financial sense depends on your site, load profile, operating hours and future energy requirements. Sharp EIT can model solar, battery storage and EV charging together as part of the project assessment.

For an accurate commercial solar cost estimate, Sharp EIT assesses your electricity usage, site conditions, available installation area, electrical infrastructure and project goals.

We then recommend an appropriate system size and provide a commercial solar quote outlining expected project cost, projected savings, payback and applicable incentives.