The purpose of a grounding rod is to have a designed electrical path to dissipate a static discharge voltage to the earth. These grounding rods or Chem Rods are efficient in terms that one rod can easily replace 10 conventional rods. They are least resistant to changing temperatures and require very low maintenance along with being economical and reliable. Contact an LEC expert today - https://www.lightningprotection.com/grounding-earthing/