Instead of ASHRAE 90.1-2010 Appendix G, projects in Seattle may demonstrate compliance with with all mandatory provisions of the 2012 Seattle Energy Code AND demonstrate a percentage improvement in the proposed building performance rating compared with the baseline according to the 2012 Seattle Energy Code Total Building Performance (Section C407). The same percentage improvement in energy performance is required to meet the Prerequisite, and the same points for percentage improvement in energy performance are applicable for the Credit.
The following conditions (where applicable) must be met:
• Energy Cost shall be used as the performance metric rather than site energy (versus Section C407.3 which indicates that site energy shall be used). Exception: A Pilot ACP allowing alternate metrics may be applied as applicable.
• Model proposed and reference outside air similar to ASHRAE 90.1-2010.
o Proposed and reference (baseline) outside air rates shall be modeled as per ASHRAE 90.1 – 2010 (G3.1.2.6).
• In addition to the documentation requirements established by the Seattle Energy Code, all required LEED documentation must be provided (and must include the same information as is required for ASHRAE 90.1-2010, with all baseline and proposed inputs shown) including:
o The LEED EAp2: Minimum Energy Performance form
o The LEED EAc1: Optimize Energy Performance form
o The LEED v4 Minimum Energy Performance Calculator (http://www.usgbc.org/resources/minimum-energy-performance-calculator) (or a document with equivalent information) with Baseline inputs updated to refer to Seattle Energy Code.
• Multifamily high-rise and dormitory projects are not eligible for this alternative compliance path.
• BD+C: The equivalence applies for new construction only and does not apply to major renovations.
• ID+C: The energy model must be modeled using the Title-24 new construction requirements for HVAC, DHW, lighting and envelope.