A1  Rotating electrical machines, C3  Power system environmental performance

A3  Transmission and distribution equipment

B2  Overhead lines, B3  Substations and electrical installations

B5  Protection and automation, C2  Power system operation and control

C4  Power system technical performance

C6  Active distribution systems and distributed energy resources

D2  Information systems and telecommunication

A2  Power transformers and reactors

B1  Insulated cables

B4  DC systems and power electronics

C1  Power system development and economics

C5  Electricity markets and regulation

D1  Materials and emerging test techniques