In 2022 it had some 2600 registered members - companies who collectively generated annual revenues of over £6billion (e.g. the UK electrical contracting industry is worth in excess of £10 billion).

[citation needed] ECA also has associate categories open to industry manufacturers, distributors, educators, clients and specifiers who wish to engage and collaborate with members.

ECA is currently either leading or active across a range of built environment, building, construction, maintenance, and infrastructure issues, and in particular those relating to electrical engineering, mainly in the commercial, industrial and public sectors, as well as the domestic arena.

Founded in 1901, the ECA represents contractors who design, install, inspect, test, monitor, and maintain electrical and electronic equipment and services.

It has diversified to cover not just electrical engineering, but also fire and security, datacomms, energy provision, building management systems, audiovisual, temporary installations, and other services.