Compliance for additions and alterations requires calculating the proposed design energy use and the standard design budget.
When the energy use of the proposed design is less than or equal to the standard design, the addition or alteration or both comply with the standards. The difference between the standard design energy use and the proposed design is the compliance margin. When the compliance margin is zero or greater, the project complies.
The energy use is expressed in kTDV/ft2 and includes space heating, space cooling, ventilation, and water heating but does not include other end uses such as interior lighting, appliances, cooking, plug loads, and exterior lighting. Photovoltaics (PV) generation and flexibility measures, such as battery storage, have no effect on additions and alterations.