Good news!
"Looking forward to a future where laser beams replace power lines, DAPRA's Persistent Optical Wireless Energy Relay (POWER) program has set new records for transmitting more power wirelessly over longer distances. ...
When it comes to military and humanitarian operations, obtaining a steady, reliable source of power is of paramount importance and this has only increased over time. ... supply line
across the infamous last mile where power lines cannot be slung or pipelines buried and soldiers are often reduced to hauling jerry cans of fuel over rough country by hand and back muscle. ...
recent tests in New Mexico setting new records.
Previously, the POWER system managed to use a laser to beam 230 watts across one mile (1.7 km) for 25 seconds, and an undisclosed lesser amount of power as far as 2.3 miles (3.7 km).
Now, DARPA has managed to increase this to 800 watts for 30 seconds at a distance of 5.3 miles (8.6 km). ...
The system is built around what is called the Power Receiver Array Demo (PRAD), which is a ball-like structure that has a compact aperture to allow a laser beam to enter. This beam strikes a parabolic mirror that scatters the light and shines it on an array of dozens of photovoltaic cells. These convert the laser light back into electricity. ..."
"The POWER program will leverage power beaming for near-instantaneous energy transport to enable a resilient, multi-path energy network. To create this wireless energy web, POWER seeks to design and demonstrate effective airborne optical energy relays. ..."
"... “It is beyond a doubt that we absolutely obliterated all previously reported optical power beaming demonstrations for power and distance,” said POWER Program Manager Paul Jaffe after the results were confirmed. ..."
DARPA program sets distance record for power beaming (original news release) "Successful demonstration of new receiver technology is important step for revolutionizing power delivery at the edge"
The POWER Receiver Array Demo (PRAD) set the records for power and distance for optical power beaming; the graphic shows how it compares to previous notable efforts.
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