American National Standards Institute (ANSI)
National Standards Systems Network (NSSN)
National Institute for Standards and Technology (NIST)
Institute of Electrical and Electronics Engineers (IEEE)
National Electrical Safety Code (NESC)
IEEE Standards Coordinating Committee 21 (SCC21)
IEEE Standards Coordinating Committee 29 (SCC29)
International Electrotechnical Commission (IEC)
International Organization for Standardization (ISO)

National Fire Protection Association (NFPA)
National Electrical Code (NEC)
Occupational Safety and Health Administration (OSHA)

American Society for Testing and Materials (ASTM)
National Electrical Contractors Association (NECA)
National Electrical Installation Standards (NEIS)
National Electrical Manufacturers Association (NEMA)
Battery Council International (BCI)
Illuminating Engineering Society of North America (IESNA)
American Society of Mechanical Engineers (ASME)
American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. (ASHRAE)

American Society of Civil Engineers (ASCE)
ASCE’s Structural Engineering Institute (SEI)
International Code Council (ICC)
Building Officials and Code Administrators International Inc. (BOCA)
International Conference of Building Officials (ICBO)
Southern Building Code Congress International Inc. (SBCCI)
The International Association of Electrical Inspectors (IAEI)
International Association of Plumbing and Mechanical Officials (IAPMO)

American Association for Laboratory Accreditation (A2LA)
PowerMark Corporation (PMC)
Global Approval Program for Photovoltaics (PV GAP)
Institute for Sustainable Power (ISP)
International Accreditation Forum, Inc. (IAF)