“A regular solar cell generates power by absorbing sunlight, which causes a voltage to appear across the device and for current to flow. In these new devices, light is instead emitted and the current and voltage go in the opposite direction, but you still generate power,” Jeremy Munday, professor in electrical and computer engineering at UC Davis, said in a statement.
Currently, traditional solar panels are unable to produce energy at night or when sunlight becomes obscured. Instead, they provide power through net metering, in which surplus power is transferred to a public utility power grid.
“Solar cells are limited in that they can only work during the day, whereas these devices can work 24/7, which is the real advantage,” Munday told CNN. “Nobody wants to lose power once the sun sets.”
In 2016, California’s renewable energy firm SolarReserve commissioned the world’s first 24/7 solar power plant in the Nevada Desert; powering 75,000 homes for 3 hours a day.
But the anti-solar panels are very much in the test phase. The prototypes made produce 50 watts of electricity per square meter under ideal conditions. That’s only about 25 percent of what solar panels can generate in a day.