CIM Users Group
The CIM Users Group (CIMUG) was formed in 2005, as a subgroup of the UCA International Users Group, to provide a forum in which users, consultants, and suppliers could cooperate and leverage the IEC CIM international standards to advance interoperability across the utility enterprise. The primary purpose is to share technology basics, best practices and technical resources while Advancing Interoperability for the Utility Enterprise.
What is CIM?
The Common Information Model (CIM) is a standardized data model that enables consistent, structured exchange of information across electric utility systems. By providing a common framework for representing power system resources, CIM supports integration, interoperability, and data transparency across diverse platforms and applications—from planning and operations to market systems and enterprise tools.
UCAIug plays a leading role in promoting the adoption and evolution of CIM through collaboration with utilities, vendors, and standards organizations. Through its CIM Users Group, UCAIug supports the development of best practices, testing procedures, and implementation guidelines that ensure practical, real-world use of CIM in modern utility environments. By fostering a global community of stakeholders, UCAIug helps drive innovation, alignment, and consistency in utility data management and system integration.

Various activities meet with various cadences:
- Weekly (virtual): Task Forces, Working Groups and Subcommittees on development, use-case data modeling, NMM and more
- Biweekly (virtual): Subcommittees on use-case data modeling or testing & certification
- Monthly (virtual): General CIM Users group update
- Ad-hoc (virtual): Marketing subcommittee for DistribuTECH & Plugfest planning
- Annually (in-person): OpenFMB interoperability Plugfest event
The CIM Users Group is comprised of a diverse mix of energy industry stakeholders including electric utilities, hardware and software vendors, research labs, federal government, and consultants. These dedicated individuals contribute as they are able and participate in activities based on interest and ability.
CIM Users Group Membership
The energy industry coalition consists of electric utilities, technology suppliers, national labs, and other stakeholders. Join UCAIug and the CIM Users Group to participate and contribute to the continued adoption of CIM.
Featured Event
March 24-27, 2025 • Dallas, TX, USA
- Come see us in booth #2247
Distributech is the premier annual event for transmission and distribution, showcasing cutting-edge technologies that power our homes and businesses. This conference and exhibition offer a wealth of education, information, and solutions that drive the industry forward.
THANK YOU to this year's 2025 DISTRIBUTECH sponsors

Our Network of Sites
UCAIUG
The UCAIUG main site is the central hub for general info, events, documents, and more.
CIM Users Group
Advance interoperability across the utility enterprise with CIM international standards.
OpenFMB
Learn more about OpenFMB’s common data models and unified protocol interfaces.
61850 Users Group
Implementing, advancing the adoption, and testing of 61850 and its associated standards.
UCA Testing
View testing information related to accreditation and certification.