Option 2: Prescriptive Compliance Path: ASHRAE Advanced Energy Design Guide refers to the design guide published by ASHRAE K–12 schools less than 200,000 ft2. The guide outlines strategies to reduce energy use by 30% from ASHRAE 90.1-2001 levels, or an amount equivalent to a 10%–14% reduction from the ASHRAE 90.1-2007 standard. If you choose this compliance path, become familiar with the list of prescriptive requirements and commit to meeting them. (See the AEDG checklist in the Documentation Toolkit.)