What aspect of elevator systems is enhanced through modernization regarding energy?

Modernization of elevator systems focuses on improving efficiency and reducing energy consumption. This is achieved through upgrades to various components, such as more efficient motors, regenerative drives, and advanced control systems. These enhancements minimize the overall energy use of the system, contributing to cost savings and a reduced environmental impact.

Additionally, modern elevator systems often include technologies that allow them to recover energy, such as regenerative braking, which captures energy during descents and uses it to power other systems within the building. This further supports the goal of reducing energy use while maintaining performance standards.

Therefore, the correct answer emphasizes the significant improvement in energy efficiency that modernization brings to elevator systems.