855773667-LEED-v5-O-M-Reference-Guide-Launch-Edition-1 - Page 187
Extracted Content
PATH 2. AUTOMATED DEMAND SIDE MANAGEMENT (1 POINT)
Have in place a control system that automatically sheds 10% of peak electricity demand for a minimum of one hour in response to triggers denoting strain on the grid or high grid emissions. Examples include:
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Data obtained through an API indicating high grid emissions
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Peak demand tariff period, when the grid is operating in the highest demand window
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Time-of-use rate when pricing is highest
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Signal from a demand response aggregator
OR
Option 2. Building Envelope Performance (1 point)
PATH 1. LOW AIR LEAKAGE (1 POINT)
Demonstrate a measured air leakage rate of the building envelope that is less than or equal to the maximum air leakage rates in Table 1 (for Path 1). Air leakage testing must have occurred no later than eight years before the end of the 12-month reporting period.
Table 1. Limits on air leakage rates
| Building conditioned floor area (CFA) | Pressure test conditions across the building envelope | Maximum air leakage |
|---|---|---|
| ≥ 5,000 sq. ft. (465 sq. m.) | At pressure difference of 50 Pascals (0.2 in H2O) | 0.27 cfm/sq. ft. (1.4 L/s*sq. m.) |
| ≥ 5,000 sq. ft. (465 sq. m.) | At pressure difference of 75 Pascals (0.3 in H2O) | 0.35 cfm/sq. ft. (1.8 L/s*sq. m.) |
| < 5,000 sq. ft. (465 sq. m.) | At 50 Pascals (0.2 in in H20) | 2.5 ACH |
| < 5,000 sq. ft. (465 sq. m.) | At 75 Pascals (0.3 in H2O) | 3.4 ACH |
NOTE: For projects ≥ 5,000 sq. ft. (465 sq. m.), air leakage is per sq. ft. or sq. m. of building envelope area.
NOTE: Complete air leakage testing using ASTM E779, ANSI/RESNET/ICC 380, ASTM E3158, ASTM E1827, or equivalent.
OR
PATH 2. REDUCED AIR LEAKAGE RATES (1 POINT)
Demonstrate a minimum reduction in air leakage rates of 25% through air leakage testing before and after alterations are implemented. Both air leakage tests must have occurred no later than eight years before the end of the 12-month reporting period.
REQUIREMENTS EXPLAINED
This credit rewards projects that implement solutions to reduce stress on the grid and increase building resilience.
U.S. Green Building Council LEED v5 Reference Guide for Operations and Maintenance, April 2025 Launch Edition 177