Laser electricity transmission, also known as laser power beaming, is the wireless transfer of energy using a focused laser beam. A laser transmitter converts electricity into a beam of light, which is then directed at a photovoltaic receiver that converts the light back into usable electricity. While this technology has made significant breakthroughs in recent years, it's currently not used for the main power grid because of three major challenges:

1. Efficiency: The end-to-end efficiency of laser power beaming is still relatively low compared to traditional wired systems. Significant energy is lost during the conversion process from electricity to light, during transmission, and then back to electricity.

2. Safety: High-power lasers pose a serious safety risk to people, animals, and aircraft. While safety systems are in development to mitigate these risks, they are a major regulatory and public concern for large-scale outdoor deployment.

3. Scalability: Current laser beaming technology is only capable of transmitting a limited amount of power, typically for niche applications like powering drones or small remote sensors. It is not yet capable of the large-scale, high-power transmission required for a city's or a country's power grid.

For the reliable, large-scale transmission of electricity over long distances, traditional overhead and underground lines remain the proven, efficient, and cost-effective solution. Our company, Ningbo Changshi, specializes in the equipment and tools that are essential for building and maintaining this critical wired infrastructure.