What is the average size of a commercial solar system for different types of businesses?
The average size of a commercial solar system can vary significantly depending on the type of business and its energy needs. Generally, the size of a solar installation is determined by factors such as the business’s electricity consumption, available roof space, and budget. For small businesses, a solar system might range from 10 kW to 50 kW, while medium-sized enterprises might require systems between 50 kW and 250 kW. Large businesses or industrial facilities might need systems exceeding 250 kW to meet their energy demands efficiently.
Understanding these variations is crucial for businesses considering solar energy as a sustainable solution. Each business type, from retail stores to manufacturing plants, has unique energy requirements that influence the size of the solar system needed. By tailoring the system to their specific needs, businesses can optimise their energy savings and contribute positively to environmental sustainability.

Retail businesses often have moderate energy needs, primarily for lighting and climate control. For these types of businesses, a solar system ranging from 20 kW to 100 kW is commonly sufficient. This size can cover a significant portion of their energy usage, leading to substantial savings on electricity bills over time.
In contrast, office buildings might require larger systems, typically between 50 kW and 200 kW. These buildings consume more energy due to the extensive use of computers, lighting, and HVAC systems. A well-sized solar system can help offset these costs, making it a financially sound investment while reducing the building’s carbon footprint.
Manufacturing facilities or warehouses, with their high energy demands for machinery and equipment, often need even larger systems. These can range from 250 kW to several megawatts, depending on the scale of operations. Investing in a larger solar system can significantly lower operational costs and support long-term sustainability goals for such energy-intensive businesses.
