This thesis examines the contribution of energy efficiency improvement in the Swiss industry sector in attaining Switzerland's net-zero emission target. By analyzing energy consumption trends and drivers, with a specific focus on the metals and food and beverage manufacturing sub-sectors, the thesis identifies significant opportunities for short and medium-term energy efficiency improvements and decarbonization within the Swiss industry. It presents a comprehensive analysis of cost-effective measures, ranked through energy efficiency cost curves, which can lead to substantial CO₂ abatement. The profitability analysis demonstrates the economic viability of energy efficiency investments for different types of industrial establishments. A case study on the chocolate industry showcases the potential of process heat electrification using heat pumps. The findings emphasize the urgency of implementing these identified energy efficiency measures to achieve short and medium-term decarbonization goals in the Swiss industry sector, contributing to a sustainable and low-carbon future.