Define "net-zero energy building" in the context of LEED.

A net-zero energy building, in the context of LEED, is defined as a building that produces as much energy as it consumes over the course of a year. This concept reflects the intent to achieve a balance between the energy consumed by the building (for heating, cooling, lighting, appliances, and other operational needs) and the energy generated on-site, primarily through renewable sources such as solar panels. The aim is to reduce dependency on fossil fuels and decrease greenhouse gas emissions, ultimately striving for sustainability in both design and operation.

This definition underscores the importance of energy efficiency and the generation of clean energy, as both are critical in minimizing the building's environmental impact. Therefore, the focus on annual energy balance emphasizes an overall commitment to sustainable practices in the built environment. While it is essential to recognize the role of renewable energy sources, net-zero energy does not strictly require that all energy be produced from renewables or that no energy input is needed, like the other definitions suggest. The net-zero concept is about achieving an equilibrium between energy consumption and production throughout the year.