RATING SYSTEM:
1. For projects using Normative Appendix G Performance Rating Method, under the subheading "International", revise the first bullet point to read as follows:

International:
o use the latest national grid mix coefficients from the International Energy Agency to calculate GHG emissions by energy source

REFERENCE GUIDE:

2. Further Explanation > Greenhouse Gas Emissions section

In the Greenhouse Gas Emissions section, revise the first sentence in the 4th paragraph to read as follows:
"International projects may use the latest national coefficients from the International Energy Agency to calculate GHG emissions by energy source, or determine greenhouse gas emissions factors for each building energy source based on ISO 52000-1:2017 Energy Performance of Buildings."

3. Further Explanation > International Tips section

In the International Tips section, under Option 1. Tenant-Level Energy Performance Compliance, below the paragraph that begins "Canada: Use the Provincial emissions factors..." add the following paragraph:

"Europe: The Europe ACP for ASHRAE 90.1 Mandatory Provisions Table provides further guidance for project teams in Europe wishing to use European standards in lieu of certain ASHRAE 90.1-2016 mandatory provisions in LEED v4.1. The guidance covers ASHRAE 90.1-2016 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 90.1-2016. Column 2 displays the requirement as written in ASHRAE 90.1-2016. 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.

Additionally, for projects using the Performance Option for compliance with EA prerequisite Minimum Energy Performance and EA credit 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."