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avatar for Helen Diemer

Helen Diemer

The Lighting Practice, Inc.
President
Philadelphia, PA USA

Helen Diemer joined The Lighting Practice in 1994 and became a principal of the firm in 1996 and president and majority shareholder in 2009. She has more than 30 years of experience designing lighting for a variety of public, corporate, university, healthcare, and retail environments. Through her participation in various professional association committees, she has contributed to numerous industry publications and standards, including IESNA’s Recommended Practice for Merchandising Lighting. As a former chair of the IALD’s Energy Committee and a member of the IESNA Energy Management Committee, she played a key role in the development of the lighting energy requirements of ASHRAE/ IESNA Standard 90.1, the basis for most state energy codes.