An energy audit is an essential tool for companies and building managers to reduce their energy costs and improve their CO₂ footprint. The process includes several steps:

1. The energy consumption of a site is analyzed, often by reviewing past energy bills and taking an inventory of the systems and equipment in use.
2. A detailed assessment of energy inefficiencies is conducted, identifying issues such as inefficient lighting, heating systems, or insulation that may consume excessive energy.
3. The audit then suggests concrete measures for improving energy efficiency and highlights potential savings.

There are various levels of audit depth, ranging from a simple walkthrough to detailed analyses with data loggers and simulations to measure and calculate energy savings. Energy audits are particularly valuable for industrial companies, as energy consumption often represents a significant portion of operating costs. An energy audit helps identify savings potential in energy-intensive processes and enables targeted improvements, such as optimizing machinery or implementing energy-efficient technologies. Additionally, by complying with energy standards and conducting regular audits, companies can meet regulatory requirements and take advantage of financial incentives, such as tax breaks.