Maintenance-free earthing is an earthing system that requires no regular upkeep or inspection. It is achieved through the use of materials that are highly resistant to corrosion and degradation, such as copper-bonded steel rods or plates. These materials are installed deep enough into the ground to provide a low-impedance connection to the earth, which allows for the safe dissipation of electrical energy. Maintenance free earthing systems are highly reliable and require no additional testing or maintenance, making them an ideal choice for applications where regular maintenance is impractical or impossible.