ThyssenKrupp Elevator announced comprehensive and specific sustainability goals in February, with an overall plan to reduce its carbon footprint by 20% by the end of 2015. The company is also hoping to inspire building owners, architects, and elevator consultants to do their part and upgrade or install more energy efficient elevators. To help, ThyssenKrupp created an online energy calculator to show how simple changes can make a difference. Measuring the elevator energy consumption is complex, says ThyssenKrupp, and depends on a lot of factors — motor efficiency, frequency of use, speed, etc. — therefore the calculator is only meant to spit out an estimate. The simple calculator asks for 10 specifications, like the number of floors in the building, building type, number of elevators, capacity, and cab lighting. Energy costs are then broken down into categories: fan, lighting, machine room cooling, elevator, and annual consumption figures.