I remember a lot of these hig voltage technology needs as insulator sulfurhexaflorid. Unfortunately the most potent greenhouse gas, so lets hope leackage is not

I remember a lot of these hig voltage technology needs as insulator sulfurhexaflorid. Unfortunately the most potent greenhouse gas, so lets hope leackage is not too high. https://en.m.wikipedia.org/wiki/Sulfur_hexafluoride https://en.m.wikipedia.org/wiki/Sulfur_hexafluoride