Anna Hartz
Scientists successfully beam electricity over 8.6 kilometers using a laser
Electricity powers almost every part of modern life. From lighting homes and charging phones to running hospitals and transport systems, daily routines depend on a stable supply of energy. Many people were reminded of this reality during major power outages, when even simple tasks suddenly became difficult.
Like something from science fiction
Producing and delivering electricity requires a vast network of infrastructure. One of the most important materials in that system is copper, which is widely used to carry electricity through power grids and into homes and businesses. For years, scientists have searched for new ways to move energy more efficiently and with fewer physical connections.
Now, researchers in the United States have demonstrated a technology that sounds like something from science fiction. The project, known as Persistent Optical Wireless Energy Relay, or POWER, is being developed by the Defense Advanced Research Projects Agency, better known as DARPA, reports El Economista.
During a recent test at the White Sands Missile Range in New Mexico, scientists successfully transmitted electricity wirelessly over a long distance. More than 800 watts of power were sent to a receiver located 8.6 kilometers away using a laser beam. That amount of electricity is enough to power a microwave oven.
Still in the early stages
The technology works by sending energy through the air using light. An infrared laser beam is directed toward a mirror, which then sends the light to a set of solar cells. These solar cells convert the light back into usable electrical energy.
Although the results are promising, researchers stress that the technology is still in its early stages. It is not yet ready for widespread use, and many technical challenges remain before it can become part of everyday life.
Even so, the successful test marks an important step forward. Wireless energy transmission could eventually reduce the need for expensive power lines and large fuel supply chains. It may also provide electricity to remote communities, military operations, or areas affected by natural disasters where traditional infrastructure is unavailable or damaged.
Scientists believe the technology has the potential to transform how energy is delivered in the future. While practical applications may still be years away, the experiment shows that sending electricity through the air is no longer just a futuristic idea. It is becoming a real possibility.
