Electrical insulators and dielectrics (gas, liquid, and solid) are a vital element in the transmission and distribution grid system as they contribute towards making the system stable, reliable, and sustainable. Their wide range applications in power components such as transformers, cables, reactors, compensators, and circuit breakers help minimize losses and faults and provide some protection to the system, hence they ought to be of high standard, too. It is therefore eminent to continuously come up with new state-of-the-art solutions with regards to the materials used as dielectrics that will mitigate issues such as those of dielectric losses, insulation breakdown, ageing, self-healing, space charge, and space & surface charge dynamics.

Electrical power demand is increasing rapidly and continuously in metropolitan cities, industrialized towns, and rural areas. To satisfy the demand, more renewable energy generation units and other distributed power sources are implemented and the power grid is expanded from time to time. Various factors like rise in atmospheric temperature compromise the integrity of insulators and dielectrics. The dielectrics need to be of the best dielectric strength to withstand fault conditions such as surges and transients. Mostly used dielectrics are from mineral oil products, hence not suitable, posing a threat to the environment when they are disposed or damaged as they are mostly nonbiodegradable, and lastly, they are not reliable as mineral oil reserves will get exploited. Modern research ought to investigate and propose effective solutions to the insulation strengths and issues of using more biodegradable dielectrics as such leading to more user and environmentally friendly power insulators, thereby leading to more reliable and sustainable materials for power systems.

The Special Issue aims to encourages researchers to present novelty in terms of developing ecofriendly solutions for electrical insulation technologies. This is in line with promoting the United Nations goals to have affordable and clean energy and to have sustainable cities and communities by using materials that will make cities and human settlements inclusive, safe, resilient, and sustainable. This Special Issue scope intends to focus on modern engineering research and development of electrical insulating materials and technology for power components. We welcome original research and review articles.

Potential topics include but are not limited to the following:

• Application of nano particles in dielectrics
• Lifetime and ageing of insulating materials
• Combinatorial methods of advanced materials for dielectrics
• Streaming electrification phenomenon in insulators
• Potential of green energy technologies in power insulation
• Degradation and dielectric breakdown assessment for high voltage components
• Dissolved gas analysis in dielectrics
• Temperature and field induced variations of electrical conductivity
• Phase resolved partial discharge patterns
• Degree of polymerization for liquid dielectrics
• Surface potential decay characteristics
• Use of additives to improve insulators
• Biodegradability and sustainability of insulating materials