to minimize light trespass from the building and site, reduce
sky-glow to increase night sky access, improve nighttime visibility
through glare reduction, and reduce development impact on nocturnal
Verify light trespass requirements are met by providing site plan
showing initial horizontal and vertical footcandles. Provide
catalog cut-sheets of all site and building mounted
- Minimize site lighting where possible
- Full cutoff-luminaries
- Low-reflectance surfaces
- Low-angle spotlights
- Exterior luminaires with lamps over 1,000 lumens must be
shielded and those with lamps of 3,500 or more lumens must be full
cutoff fixtures, as defined by IESNA.
- If city street lights are being installed as part of the
project scope and they are located within the project's site
boundary, these fixtures must comply with credit requirements.
- In campus settings, a project need not have zero footcandles at
the site boundary and can take a comprehensive approach to the
campus lighting plan. See the LEED Campus Application Guide for
- Projects should be especially cautious with monument, flagpole
and signage lighting, artistic or building up lighting and
landscape up lighting.
- Five California LEED v2.1 certified buildings have achieved
- 30% of all California LEED Certified projects achieved this
credit for LEED v2.1.
- 30% average electricity savings is estimated for projects
attaining this credit.
Additional EDR Resources
Online training module
Efficient Lighting Systems
Options & Opportunities
Title 24 and Savings By Design