The Mitsubishi Heavy Industries Group is promoting energy saving and rationalization activities regardless of the amount of CO₂ emissions to achieve carbon neutrality by 2040. For these activities, environmentally conscious green manufacturing that reduces equipment energy consumption while maintaining and improving work safety and product productivity is important. This report outlines how green manufacturing was achieved for the production equipment of the Oye Plant, which manufactures aerospace parts, resulting in a 10% reduction in factory power costs and CO₂ emissions.