Long-range wireless electricity transmission is an exciting and rapidly advancing field of research, with technologies like microwave beaming and laser power beaming showing promise for niche applications. However, it is not currently a viable or cost-effective replacement for the main power grid, and it is not expected to be for the foreseeable future.

The primary challenges are:

• Low Efficiency: A significant amount of energy is lost during the conversion from electricity to electromagnetic waves, during transmission through the air, and during the final conversion back to electricity at the receiver. This makes it far less efficient than the near-100% efficiency of a modern, well-maintained power line.

• Safety Concerns: Transmitting high-power beams of microwaves or lasers through the atmosphere raises significant safety concerns for human health, wildlife, and aviation.

• Scalability: Current technology can only transmit a limited amount of power, sufficient for small devices or specialized projects, but nowhere near the gigawatts needed to power cities and industries.

For the scalable, reliable, and efficient delivery of electricity that global economies depend on, overhead transmission lines (OHTL) and underground cables remain the only proven solution. Our company, Ningbo Changshi, is a leading provider of the tension stringing equipment and cable laying tools that are essential for this critical infrastructure.