TECHNICAL FEATURE FIGURE 3 Energy modeling cycles in Standard 209 - 2018. Conceptual Design Schematic Design Design Development No. 1 Simple Box Modeling No. 2 Conceptual Design Modeling No. 3 Load Reduction Modeling No. 4 HVAC System Selection Modeling NUMBER TITLE PURPOSE APPLICABILITY 1 Simple Box Modeling Distribution of Energy by End-Use and Demand Characteristics that Affect Building Conceptual Design Before Setting the Building's Geometry and Site Orientation 2 Conceptual Design Modeling Energy Improvements Related to the Building's Form and Architecture Projects Where Building's Form and Architecture are Still Subject to Changes 3 Load Reduction Modeling Strategies that Lower Annual Energy Consumption and Heating/Cooling Peak Loads Completed Prior to the Final Selection of HVAC System Type and Prior to The End of the Schematic Design Phase 4 HVAC System Annual Energy Consumption Selection and Demand Impacts of Modeling HVAC System Options Completed Prior to HVAC System Selection 5 Design Refinement Completed after Modeling Cycle #3 and Prior to the End of Construction Documents Phase 6 Design Integration and Optimization 7 Energy Simulation Aided-Value Engineering Impact of Value Engineering Measures on Project Energy Performance Goals For Project Alternatives that Negatively Affect Performance Goals and Only if First Cost Impacts are Identified for Such Alternatives 8 As-Designed Energy Performance Compare As-Designed Performance to Project Goals Completed After Construction Documents Phase 9 Change Orders Feedback on Requests for Change Orders that Impact the Project Energy Performance Goals For Change Orders that Negatively Affect Energy Performance Goals 10 As-Built Energy Performance Compare As-Built Performance to Project Goals Completed After Construction is Complete And As-Built Drawings Are Complete 11 PostCompare Modeled Performed No Sooner Than Occupancy Performance of Last Design- Twelve Months After Initial Energy Or Construction-Phase Model Occupancy; Comparison Performance To Measured Energy Use and Year to Include Twelve Comparison Weather Conditions of Building Consecutive Months of In Operation; Identify Potential Building Operations Energy Savings Opportunities; Provide Feedback to Future Energy Modeling Projects No. 5 Design Refinement No. 6 Design Integration and Optimization No. 7 Energy Simulation-Aided Value Engineering Construction Document Construction & Operations TABLE 1 Modeling cycles in Standard 209 - 2018, purpose and applicability. No. 8 As Designed Energy Performance No. 9 Change Orders No. 10 As-Built Energy Performance No. 11 Post-Occupancy Energy Performance Comparison PostOccupancy that are common to all modeling cycles, and includes the following categories (Figure 2, Page 24): * Baseline and energy performance goals; * Input data; * Reporting; * Quality Assurance (QA) review; and * Modeler quality control. Modeling Cycles As indicated earlier, there are 11 modeling cycles (Figure 3) in Standard 209 with the first seven cycles occurring during the design phase. Modeling Cycle #3 - Load Reduction Modeling, is required for all projects. Table 1 summarizes the 11 modeling cycles. Promotion and Adoption A small task group of committee members from the larger standard project committee have periodically kept in touch beyond the April 2018 publication date with the goal of promoting Standard 209 and to advocate for use and adoption. Efforts are ongoing but have so far focused on adoption by green building codes, beyond-code programs such as LEED and design-based utility incentive programs. The standard is starting to see reference in Confirm Current Design Directions, and Support Further Development of the Design Facilitate Integration of Completed Prior to the End Building Systems Through of Construction Documents an Optimization Process Phase industry publications such as the ASHRAE Advanced Energy Design Guide for Small to Medium Office Buildings: Achieving Zero Energy,13 as well as the AIA "Architect's Guide to Building Performance: Integrating Performance Simulation in the Design Process."14 Standard 209 has also been translated to Spanish to facilitate increased adoption. Conclusion Energy modeling plays an important role in the design D E C E M B E R 2 0 19 ashrae.org ASHRAE JOURNAL 25http://www.ashrae.org