The 2012 convention and trade show was held in Las Vegas, September 29 - October 2, 2012 at the Mandalay Bay, and had a cumulative participation of 5,500, including over 300 companies in over 700 exhibit booths.

Annual conventions have been held every year since, save three years; Conventions were canceled in 1933 & 1934, at the depth of the Great Depression, and in 2005 when the show, planned for New Orleans, was prevented by Hurricane Katrina.

The NECA Show was outsourced to HFI Event Services beginning in 2009.

Also known as America’s leading power system, lighting & cabling exposition, the NECA Show brings manufacturers and distributors with a wide array of products and services including: Alarm / Signal Systems, Back-up Power, Boxes & Enclosures, Building Automation & Controls, Codes, Standards & Certifications, Computer Hardware & Equipment, Conduit, Raceway, Cable Tray, Connections & Terminators, Distributors, Energy Efficiency, Estimating, Fasteners Hangers Clamps & Supports, Fire & Life Safety, Grounding & Bonding, Heavy Equipment, Home Automation, Ladders & Lifts, Lighting & Controls, Low Voltage / Voice Data Video, Motor & Motor Controls, Online & Web Services, Outdoor Products, National Electrical Code, Power Quality & Distribution, Safety Equipment & Apparel, Scaffold & Platforms, Security, Services: Financial / Insurance / other, Site Equipment, Software, Solar Energy / PV, Structured Wire & Cable, Testing Equipment, Tools, Training, Transformers, Transmission & Distribution, Underground Equipment, Vehicles & Vehicle Equipment, Wind Energy At the NECA convention and trade show, attendees have numerous opportunities for education and leadership training in areas such as advocacy, best practices, competitive edge, labor relations, networking, and standards.

NECA has 4,500 member organizations and produces approximately 250 annual training, continuing education, and business-management events.