| CSAG D1 | Strategic and Customer Related Advisory Group |
| AG D1.01 | Insulating Lquids |
| AG D1.02 | High Voltage Testing and Diagnostic |
| AG D1.03 | Insulating Gases |
| AG D1.04 | Insulating Solids |
| AG D1.05 | Capacitors |
| AG D1.06 | Emerging Technologies |
| WG D1.01 | Liquid Impreganted Systems for Transformers |
| WG D1.07 | Solid Insulating Materials for Rotating Machines |
| WG D1.14 | Material Properties for Nonceramic Outdoor Insulation |
| WG D1.15 | HTSC-Material Applications & Cooling |
| WG D1.17 | HV Asset Condition Assessment Tools, Data Quality and Expert Systems |
| WG D1.18 | Emerging Technologies in Power Systems |
| WG D1.19 | Solid Insulation Endurance under Repetitive Transient Voltages |
| WG D1.20 | Water Tree Detection in XLPE insulation |
| WG D1.24 | Potential of Polymer Nanocomposites as Electrical Insulation for Highly Stressed Insulation Material in AC and DC Application |
| WG D1.23 | Diagnostics and Accelerated Life Endurance Testing of Polymeric Materials for HVDC Application |
| WG D1.25 | Application Guide for PD Detection in GIS using UHF or Acoustic Methods |
| WG D1.26 | Basic Principles to Determinate Methane Content of Cross-linked Solid Insulation of MV and HV Cables |
| WG D1.33 | High Voltage Test and Measuring Techniques |