scope:

This standard covers

a. existing buildings, new buildings, groups of buildings, or portions of buildings;

b. determination, including calculation methodology, and expression of the building(s) zero net energy status;

c. determination, including calculation methodology, and expression of the building(s) zero net carbon status; and

d. energy and carbon emissions associated with flows across the site boundary and off-site credited flows.

The provisions of this standard do not apply to

a. establishment of building gross energy performance goals or limits;

b. design guidance or design requirements; or

c. embodied energy or carbon of building materials and systems.

PURPOSE

This standard sets requirements for evaluating whether a building or group of buildings meets a definition of "zero net energy" or whether those buildings meet a definition of "zero net carbon." It provides a consistent method of expressing qualifications for zero net energy and zero net carbon buildings associated with the design of new buildings and the operation of existing buildings.