"An international project should use the following approach to determine the project's equivalent climate zone and location for energy modeling:
Step 1. Determine location's Climate Zone. For locations in international countries that are listed in ASHRAE Standard 169, Table A-6, “International Stations and Climate Zones,” use this table to determine the required climate zone number and, where required, the assigned climate zone letter. For all international locations that are not listed in ASHRAE Standard 169, Table A-6, “International Stations and Climate Zones,” use ASHRAE Standard 169, Section A3, “Climate Zone Definitions,” and Table A-3, “Thermal Climate Zone Definitions,” to determine both the climate zone number and letter. The necessary information from ASHRAE 169 is available in PDF form as Annex 1 of ASHRAE 90.1-2016
While using ASHRAE Standard 169, Table A-6 is the preferred approach for this methodology, projects may also refer to ASHRAE 90.1-2010, Appendix B, to determine the appropriate climate zone. Project locations not listed in Appendix B should refer to ASHRAE Standard 169.
Step 2. Identify the annual heating degree days (HDD65) and cooling degree days (CDD50) for the international location. Reference the ASHRAE Climatic Conditions website if no local data is provided (ASHRAE climatic design conditions 2009/2013/2017).
Step 3. Find the equivalent U.S. location, in the same climate zone, with the closest HDD/CDD by referring to ASHRAE 90.1-2010, Normative Appendix D, Table D-1. Once a U.S. location with the most similar HDD/CDD is identified in Table D-1, projects should confirm that the U.S. city is located in a county with the same climate zone as the project location, as identified in ASHRAE Standard 169, Table B-1, “U.S. Climate Zones by State and County” (which is normative for Standard 90.1).
Note: For projects located in Climate Zone 1B, which is not an available selection within the United States, select a U.S. city located in Climate Zone 2B.
For projects in the Southern hemisphere, the building orientation should be rotated 180 degrees from the designed orientation. So for example, if the front of the home is facing north, it should be modeled as facing South."