855773520-LEED-v5-ID-C-Reference-Guide-Launch-Edition-1 - Page 203
Extracted Content
Equation 2.
[𝑓] [𝑓][ 𝑝] [𝑝] [𝑝][ 𝑎] [𝑎] [) 𝑓] [𝑓][ 3 𝑙] [𝑙] [𝑙] [𝑙][ 𝑓] [𝑓] [𝑓] [] × 𝑝] [𝑝] [𝑝] [𝑝][ 𝑎] [𝑎] 𝐴𝐴 = [[∑(𝑓]
𝑡 𝑡 𝑡 𝑔 𝑔 𝑔 𝑎 𝑎 𝑜 𝑏 𝑏 𝑏 𝑏 𝑏 𝑏
𝑡 𝑡 𝑡 𝑔 𝑔 𝑔 𝑎 𝑎 𝑜 𝑏 𝑏 𝑏 𝑏 𝑏 𝑏
Use the area (A) to calculate the required minimum rated capacity of renewable energy for up to two points. For solar PV panels, use the direct current (DC) rated capacity, without degrading for system losses.
Table 2. Minimum rated capacity
| Points | Minimum rated capacity | Col3 |
|---|---|---|
| Points | IP units | SI units |
| 1 | A x 1.0 Watt / sq. ft. | A x 10.8 Watt / sq. m. |
2 | A x 2.0 Watt / sq. ft. | A x 21.6 Watt / sq. m. |
For a building three stories or taller, the minimum required rated capacity corresponds to approximately 20% of gross roof area covered by solar PVs for one point, or approximately 40% of gross roof area covered by solar PVs for two points. The one-point threshold for minimum rated capacity is double the value of on-site renewable energy prescriptively required by ASHRAE 90.1-2022 for new buildings.
Tier 1 percent of tenant annual site energy method for demonstrating compliance This method is most appropriate for projects located in buildings with three or fewer floors that have relatively low process loads. Projects must use the percent of tenant annual site energy method when documenting more than two points for Tier 1 renewable energy.
TIER 2. NEW OFF-SITE RENEWABLE ELECTRICITY
Age of the renewable generator marks the key difference between Tier 2 and Tier 3 qualified electricity generation resources. Tier 2 requires new off-site renewable power either from generators contracted to be built and operational within two years of building occupancy, or from generators with a commercial operations date (COD) no more than five years before the execution of the purchase contract.
Older contracts It is acceptable to utilize older long-term purchase contracts to comply with the COD requirement, provided that the contract shows the COD for the generators occurred less than five years before the contract was executed and the allocated energy generation from the contract meets all Renewable criteria. For example, a 20-year purchase contract for newly installed wind power executed 10 years ago allocated to the project in accordance with Renewable criteria below qualifies as Tier 2 renewable energy.
U.S. Green Building Council LEED v5 Reference Guide for Interior Design and Construction, April 2025 Launch Edition 192