The DLMS UA is a non-profit organization located in Geneva, Switzerland. It was established in 1997 and has hence lead utilities and meter manufacturers to establish open standards for
meter data exchange, enabling to build interoperable metering systems that foster the operation of liberalized energy markets.
The development of DNP3 was a comprehensive effort to achieve open, standards-based Interoperability between substation computers, RTUs, IEDs and master stations for the electric utility industry. Since the inception of DNP, the protocol has also become widely utilized even in adjacent industries such as water / waste water, transportation and the oil and gas industry. DNP3 is based on the standards of the International Electrotechnical Commission (IEC) Technical Committee 57, Working Group 03 who have been working on an OSI 3 layer "Enhanced Performance Architecture" (EPA) protocol standard for telecontrol applications.
The Modbus Organization is a group of independent users and suppliers of automation devices that seeks to drive the adoption of the Modbus communication protocol suite and the evolution to address architectures for distributed automation systems across multiple market segments. The Modbus Organization will also provide the infrastructure to obtain and share information about the protocols, their application and certification to simplify implementation by users resulting in reduced costs.
UCA International Users Group is a not-for-profit corporation focused on assisting users and vendors in the deployment of standards for real-time applications for several industries with related requirements. The Users Group does not write standards, however works closely with those bodies that have primary responsibility for the completion of standards (notably IEC TC 57: Power Systems Management and Associated Information Exchange).
CIGRE (International Council on Large Electric Systems) is a permanent, non-governmental and non-profit International Association, based in France. CIGRE was founded in 1921 and is today one of the leading worldwide Organizations on Electric Power Systems, covering their technical, economic, environmental, organisational and regulatory aspects. It facilitates the exchange of information between engineering personnel and specialists in all countries and develop knowledge in power systems.