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o Other alterations: Apply ASHRAE 90.1-2022, Section G3.3 (“Performance

Calculations for Other Alterations”), replacing all references to ASHRAE 90.1- 2022, Sections 5–10, prescriptive criteria with the corresponding ASHRAE 90.1- 2019, Sections 5–10 criteria.

Table 1. ASHRAE 90.1-2019 — Equivalent BPFs for a future source energy metric

Building type	Climate zone	Col3	Col4	Col5	Col6	Col7	Col8	Col9	Col10	Col11	Col12	Col13	Col14	Col15	Col16	Col17	Col18	Col19	Col20
Building type	0A	0B	1A	1B	2A	2B	3A	3B	3C	4A	4B	4C	5A	5B	5C	6A	6B	7	8
Multifamily	0.74	0.69	0.73	0.70	0.73	0.70	0.71	0.70	0.63	0.70	0.71	0.69	0.68	0.70	0.70	0.68	0.68	0.68	0.74
Healthcare/hospital	0.72	0.72	0.73	0.73	0.74	0.71	0.72	0.74	0.71	0.72	0.73	0.71	0.74	0.73	0.80	0.73	0.77	0.78	0.79
Hotel/motel	0.72	0.71	0.72	0.71	0.71	0.70	0.71	0.73	0.72	0.71	0.73	0.73	0.71	0.73	0.74	0.70	0.72	0.70	0.70
Office	0.62	0.63	0.61	0.62	0.58	0.60	0.57	0.62	0.55	0.55	0.61	0.57	0.58	0.61	0.59	0.58	0.60	0.54	0.58
Restaurant	0.65	0.62	0.63	0.61	0.62	0.58	0.63	0.63	0.63	0.67	0.66	0.66	0.70	0.70	0.68	0.73	0.72	0.74	0.77
Retail	0.57	0.54	0.53	0.53	0.48	0.47	0.47	0.47	0.47	0.52	0.50	0.56	0.57	0.53	0.59	0.58	0.56	0.53	0.60
School	0.57	0.57	0.58	0.57	0.55	0.54	0.57	0.51	0.49	0.48	0.51	0.52	0.51	0.53	0.51	0.53	0.50	0.51	0.58
Warehouse	0.28	0.30	0.24	0.27	0.23	0.24	0.27	0.23	0.20	0.33	0.26	0.28	0.40	0.32	0.29	0.44	0.38	0.40	0.44
All others	0.65	0.62	0.64	0.62	0.57	0.54	0.57	0.56	0.58	0.59	0.57	0.60	0.60	0.59	0.65	0.62	0.62	0.61	0.64

OR

Option 2. ASHRAE 90.l-2022

Comply with ANSI/ASHRAE/IES Standard 90.1-2022 . Use any applicable compliance path in ASHRAE 90.1, Section 4.2, or an approved equivalent standard for elements within the project scope.

For projects applying the Normative Appendix G, “Performance Rating Method” compliance path, one of the following metrics may be used in place of “cost”:

• Future source energy

o Replace all references to “cost” with “future source energy.” Use an electric site

to-source energy conversion factor of 2.0 based on future projections for the U.S. A lower national average value may be used as applicable for projects outside of the U.S.

o Replace ASHRAE 90.1, Table 4.2.1.1, BPFs with the BPFs derived for the future

source energy metric in Table 2.

• Site energy or source energy documented using ASHRAE 90.1-2022, Informative Appendix I.

U.S. Green Building Council LEED v5 Reference Guide for Interior Design and Construction, April 2025 Launch Edition 103