One idea that involves laser is space power: using a satellite in an orbit around Earth. It will use solar panels to generate energy which it will transport to Earth via some concentrated beam of energy (laser), although it would likely be using microwaves rather than visible light, like the lasers you usually think of. The advantages of this method are the possibilities of harvesting energy 24 hours a day (on Earth we can only do it during the day, of course) and reduced losses of energy as it passes through the atmosphere. As of now, though, no such technology yet exists, but a few companies are planning to have functional solar power-collecting satellites within a decade or two.
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