"Developed by members of the European Roundtable, this table provides further guidance for project teams in Europe wishing to use European standards in lieu of certain ASHRAE 90.1-2010 mandatory provisions in LEED v4. The guidance covers ASHRAE 90.1-2010 Mandatory Provision Sections 5.4, 6.4, 7.4, 8.4, 9.4 and 10. Column 1 of the table references the specific subsection used in ASHRAE 90.1-2010. Column 2 displays the requirement as written in ASHRAE 90.1-2010. Column 3 outlines the compliance pathway available for European projects. Column 4 includes, in some cases, further information about the proposal, differences between the proposal and the ASHRAE requirement, or a reference to further documentation.
Please refer back to the LEED v4 web-based reference guide (Further Explanation > International Tips > Europe) for further information on the regional alternative compliance path.
Additionally, for projects using the Performance Option for compliance with EAp2: Minimum Energy Performance and EAc1: Optimize Energy Performance, the documentation must also use the calculated U-factor for fenestration products including windows and skylights based on either the LBNL Windows 6 program, or a simulation software program that approximates the NFRC rating methodologies. Alternatively, a narrative shall be provided supporting the claim that the fenestration U-factor used in the model is similar to the values that would be achieved using the NFRC rating. The CE-marked fenestration does not account for thermal bridging and seasonal performance in the same way as the NFRC rating, and when accounted for in the energy model, has been observed to lead to savings that exceed those claimed for the same fenestration rated under the NFRC ratings."