The Illuminating Engineering Society of North America (IESNA) is the recognized technical authority on illumination. For over 100 years, its objective has been to communicate information on all aspects of good lighting practice to its members, to the lighting community, and to consumers, through a variety of programs, publications, and services.

Underwriters Laboratories Inc. (UL) is an independent, not-for-profit product safety testing and certification organization. UL has tested products for public safety for over a century. Each year more than 16 billion UL Marks are applied to products worldwide.

Provides testing and certification services for electrical safety, EMC and performance and benchmarking.

The largest architectural and commercial lighting Trade Show in North America and the world's largest architectural and commercial lighting Conference.

LD+A is a magazine for professionals involved in the art, science, study, manufacture, teaching, and implementation of lighting. LD+A is designed to enhance and improve the practice of lighting. Every issue of LD+A includes feature articles on design projects, technical articles on the science of illumination, new product developments, industry trends, news of the Illuminating Engineering Society of North America, and vital information about the illuminating profession.

eLumit is a lighting search and spec tool for design professionals. Search from over 35,000 products from quality manufacturers. You'll quickly find exactly what you need--complete with spec sheets, photometric files and more. Then take your productivity to the next level with eLumit's online specification tools. Producing fixture cuts, specs and schedules has never been easier.

Lighting.com is the source for home lighting and professional lighting including tips and product information for lamps, lighting fixtures, controls.

Over 5000 links to electrical manufacturers, distributors, lighting fixtures, supplires, assocations, etc. for the electrical construction industry.

California's Energy Efficiency Standards for Residential and Nonresidential Buildings.

US EPA Energy Star programs and products help save the environment and save consumers money by using less energy through advanced design or construction.

The Leadership in Energy and Environmental Design (LEED) Green Building Rating System™ is the nationally accepted benchmark for the design, construction, and operation of high performance green buildings. LEED gives building owners and operators the tools they need to have an immediate and measurable impact on their buildings’ performance.