Reducing energy consumption in a data centre is essential for cutting operational costs and promoting sustainability. One of the most effective strategies involves optimising airflow management by using blanking panels to block unused rack spaces, which prevents hot air recirculation and ensures that cool air is directed where it’s needed. Implementing hot and cold aisle containment systems further enhances cooling efficiency by separating hot and cold air streams, reducing the energy required for cooling. Upgrading to energy-efficient hardware, such as low-power servers and storage devices, can also significantly lower energy consumption. Additionally, adopting advanced cooling technologies like liquid cooling or free cooling can drastically reduce the reliance on traditional air conditioning. Regular monitoring and analysis of power usage effectiveness (PUE) allow data centre managers to identify inefficiencies and make real-time adjustments to optimise energy use. These measures, when combined, can lead to substantial energy savings, lower operating costs, and a reduced environmental impact for the data centre.