LEED v5 O+M Rating System_February 2026 - Page 030

Extracted Content

Sustainable Sites Credit

LIGHT POLLUTION AND BIRD COLLISION REDUCTION

SSc2

1 point

INTENT

To increase night sky access, improve nighttime visibility, and reduce the consequences of development for wildlife and people.

REQUIREMENTS

Achievement Pathways	Points
Existing Buildings	1
Option 1. Limit Uplight	1
OR
Option 2. Bird Collision Reduction	1

Option 1. Limit Uplight (1 point)

Meet all of the following uplight, interior lighting, and exterior lighting requirements:

UPLIGHT

All exterior fixtures with a light output greater than 1,000 lumens must meet the full cutoff requirements as defined in the IESNA Cutoff Classifications . [2]

AND

INTERIOR LIGHTING

Meet at least one of the following measures:

• Limit the total duration of all nighttime lighting programmed “on” to less than 90 minutes per day. A manual override capability may be provided for occasional after-hours use.

• Reduce the amount of uplight leaving the building. Any suspended or wall- or floormounted luminaires with a direct line of sight above the horizon, through any glass windows, skylights, or doors, must be automatically controlled to turn “off” during all nighttime hours (the time between sunset and sunrise).

2 The Lighting Authority, “Standards,” n.d., https://www.ies.org/standards/.

U.S. Green Building Council LEED v5 Reference Guide for Operations and Maintenance, November 2025 Edition 24