Green cleaning services and equipment are a vital aspect of the U.S. Green Building Council's Zero Net Energy initiative.

Green Cleaning Services and Zero Net Energy Programs
According to the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Zero Net Energy (ZNE) buildings are defined as;
An energy-efficient building where, on a source energy basis, the actual annual delivered energy is less than or equal to the on-site renewable exported energy.